diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 1220f431d4e..8d842207ce8 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,6 +1,6 @@
 # CGAL Resources
 
-* [Official CGAL website](http://www.cgal.org)
-* [Online manual](http://doc.cgal.org/latest/Manual/index.html)
+* [Official CGAL website](https://www.cgal.org)
+* [Online manual](https://doc.cgal.org/latest/Manual/index.html)
 * [Guidelines for contributing](https://github.com/CGAL/cgal/wiki/Guidelines)
-* [Mailing lists](http://www.cgal.org/mailing_list.html)
+* [Mailing lists](https://www.cgal.org/mailing_list.html)
diff --git a/AABB_tree/demo/AABB_tree/resources/about.html b/AABB_tree/demo/AABB_tree/resources/about.html
index 7e4e51c5c91..8d2c41d1ea0 100644
--- a/AABB_tree/demo/AABB_tree/resources/about.html
+++ b/AABB_tree/demo/AABB_tree/resources/about.html
@@ -4,11 +4,11 @@
     <p>Copyright &copy;2009
       <a href="http://www-sop.inria.fr/">INRIA Sophia Antipolis - Mediterranee<a/></p>
     <p>This application illustrates the AABB tree component 
-      of <a href="http://www.cgal.org/">CGAL</a>, applied to polyhedron
+      of <a href="https://www.cgal.org/">CGAL</a>, applied to polyhedron
       facets and edges.</p>
     <p>See also the following chapters of the manual:
       <ul>
-        <li><a href="http://www.cgal.org/Pkg/Polyhedron">
+        <li><a href="https://www.cgal.org/Pkg/Polyhedron">
             3D Polyhedral Surface</a>,
         </li>
       </ul>
diff --git a/Alpha_shapes_3/demo/Alpha_shapes_3/about_Alpha_shapes_3.html b/Alpha_shapes_3/demo/Alpha_shapes_3/about_Alpha_shapes_3.html
index 9bb2ab7827b..0c20cd04a02 100644
--- a/Alpha_shapes_3/demo/Alpha_shapes_3/about_Alpha_shapes_3.html
+++ b/Alpha_shapes_3/demo/Alpha_shapes_3/about_Alpha_shapes_3.html
@@ -3,8 +3,8 @@
     <h2>3D Alpha Shapes</h2>
     <p>Copyright &copy; 2008 GeometryFactory</p>
     <p>This application illustrates the 3D Alpha shapes
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/AlphaShapes3">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/AlphaShapes3">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Discrete_harmonic_2.h b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Discrete_harmonic_2.h
index 8e7ea862020..5ab84f16885 100644
--- a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Discrete_harmonic_2.h
+++ b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Discrete_harmonic_2.h
@@ -45,7 +45,7 @@ namespace CGAL {
 // Barycentric coordinates namespace.
 namespace Barycentric_coordinates {
 
-// Examples: see the User Manual here - http://doc.cgal.org/latest/Manual/index.html.
+// Examples: see the User Manual here - https://doc.cgal.org/latest/Manual/index.html.
 // [1] Reference: "M. S. Floater, K. Hormann, and G. Kos. A general construction of barycentric coordinates over convex polygons. Advances in Computational Mathematics, 24(1-4):311-331, 2006.".
 
 /*!
diff --git a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Generalized_barycentric_coordinates_2.h b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Generalized_barycentric_coordinates_2.h
index a3bd2339986..4bce42d7680 100644
--- a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Generalized_barycentric_coordinates_2.h
+++ b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Generalized_barycentric_coordinates_2.h
@@ -45,7 +45,7 @@ namespace CGAL {
 // Barycentric coordinates namespace.
 namespace Barycentric_coordinates {
 
-// Examples: see the User Manual here - http://doc.cgal.org/latest/Manual/index.html.
+// Examples: see the User Manual here - https://doc.cgal.org/latest/Manual/index.html.
 
 /*!
  * \ingroup PkgBarycentric_coordinates_2
diff --git a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Mean_value_2.h b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Mean_value_2.h
index 7f98606bf67..e44a126dc56 100644
--- a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Mean_value_2.h
+++ b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Mean_value_2.h
@@ -96,7 +96,7 @@ public:
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-// Examples: see the User Manual here - http://doc.cgal.org/latest/Manual/index.html.
+// Examples: see the User Manual here - https://doc.cgal.org/latest/Manual/index.html.
 // [1] Reference: "K. Hormann and M. Floater. Mean value coordinates for arbitrary planar polygons. ACM Transactions on Graphics, 25(4):1424-1441, 2006.".
 // [2] Reference: "M. S. Floater, Wachspress and mean value coordinates, to appear in the Proceedings of the 14th International Conference on Approximation Theory, G. Fasshauer and L. L. Schumaker (eds.)."
 
diff --git a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Segment_coordinates_2.h b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Segment_coordinates_2.h
index 96b0979e27d..34fe8b3ba3b 100644
--- a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Segment_coordinates_2.h
+++ b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Segment_coordinates_2.h
@@ -45,7 +45,7 @@ namespace CGAL {
 // Barycentric coordinates namespace.
 namespace Barycentric_coordinates {
 
-// Examples: see the User Manual - http://doc.cgal.org/latest/Manual/index.html.
+// Examples: see the User Manual - https://doc.cgal.org/latest/Manual/index.html.
 
 /*!
  * \ingroup PkgBarycentric_coordinates_2
diff --git a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Triangle_coordinates_2.h b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Triangle_coordinates_2.h
index a76212bdb97..8ef6af47752 100644
--- a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Triangle_coordinates_2.h
+++ b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Triangle_coordinates_2.h
@@ -45,7 +45,7 @@ namespace CGAL {
 // Barycentric coordinates namespace.
 namespace Barycentric_coordinates {
 
-// Examples: see the User Manual here - http://doc.cgal.org/latest/Manual/index.html.
+// Examples: see the User Manual here - https://doc.cgal.org/latest/Manual/index.html.
 // [1] Reference: Weisstein, Eric W. "Barycentric Coordinates." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/BarycentricCoordinates.html.
 
 /*!
diff --git a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Wachspress_2.h b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Wachspress_2.h
index 21903d6c087..09209606660 100644
--- a/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Wachspress_2.h
+++ b/Barycentric_coordinates_2/include/CGAL/Barycentric_coordinates_2/Wachspress_2.h
@@ -45,7 +45,7 @@ namespace CGAL {
 // Barycentric coordinates namespace.
 namespace Barycentric_coordinates {
 
-// Examples: see the User Manual here - http://doc.cgal.org/latest/Manual/index.html.
+// Examples: see the User Manual here - https://doc.cgal.org/latest/Manual/index.html.
 // [1] Reference: "M. S. Floater, K. Hormann, and G. Kos. A general construction of barycentric coordinates over convex polygons. Advances in Computational Mathematics, 24(1-4):311-331, 2006.".
 
 /*!
diff --git a/Boolean_set_operations_2/test/Boolean_set_operations_2/test_polygon_validation.cpp b/Boolean_set_operations_2/test/Boolean_set_operations_2/test_polygon_validation.cpp
index 8a0b974f467..671e3833f6e 100644
--- a/Boolean_set_operations_2/test/Boolean_set_operations_2/test_polygon_validation.cpp
+++ b/Boolean_set_operations_2/test/Boolean_set_operations_2/test_polygon_validation.cpp
@@ -86,7 +86,7 @@ special_warnings(const char *,
             << "  // File       : " << file << std::endl
             << "  // Line       : " << line << std::endl
             << "  // Explanation: " << msg << std::endl
-            << "  // Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html"
+            << "  // Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html"
             << std::endl;
 }
 
diff --git a/Bounding_volumes/include/CGAL/Min_sphere_of_spheres_d/Min_sphere_of_spheres_d_impl.h b/Bounding_volumes/include/CGAL/Min_sphere_of_spheres_d/Min_sphere_of_spheres_d_impl.h
index 69b5fdb7fac..facb1b23083 100644
--- a/Bounding_volumes/include/CGAL/Min_sphere_of_spheres_d/Min_sphere_of_spheres_d_impl.h
+++ b/Bounding_volumes/include/CGAL/Min_sphere_of_spheres_d/Min_sphere_of_spheres_d_impl.h
@@ -259,11 +259,11 @@ namespace CGAL_MINIBALL_NAMESPACE {
     // check size of support set:
     if (e > static_cast<int>(l.size()) || e > (D+1)) {
       cerr << "BUG: Min_sphere_of_spheres_d: support set too large." << endl
-           << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html" << endl;
+           << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html" << endl;
       return false;
     } else if (l.size() > 0 && e<=0) {
       cerr << "BUG: Min_sphere_of_spheres_d: support set too small." << endl
-           << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html" << endl;
+           << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html" << endl;
       return false;
     }
   
@@ -271,7 +271,7 @@ namespace CGAL_MINIBALL_NAMESPACE {
     if (l.size() <= 0) {
       if (!is_empty()) {
         cerr << "BUG: Min_sphere_of_spheres_d: miniball of {} non-empty." << endl
-             << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html" << endl;
+             << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html" << endl;
         return false;
       } else
         return true;
@@ -310,7 +310,7 @@ namespace CGAL_MINIBALL_NAMESPACE {
     }
     if (!isSupporting) {
       cerr << "BUG: Min_sphere_of_spheres_d: support not on boundary." << endl
-           << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html" << endl;
+           << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html" << endl;
       return false;
     }
     
@@ -336,7 +336,7 @@ namespace CGAL_MINIBALL_NAMESPACE {
           ++i;
         if (i >= D+1) {
           cerr << "BUG: Min_sphere_of_spheres_d: supp. centers aff. dep." << endl
-               << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html" << endl;
+               << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html" << endl;
           return false;
         }
     
@@ -370,7 +370,7 @@ namespace CGAL_MINIBALL_NAMESPACE {
       if (!is_zero(rhs[i],ss.disc())) {
         cerr << "BUG: Min_sphere_of_spheres_d: center of the miniball" << endl
              << "     not in the span of the support centers." << endl
-             << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html" << endl;
+             << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html" << endl;
         return false;
       }
     
@@ -388,7 +388,7 @@ namespace CGAL_MINIBALL_NAMESPACE {
       if (is_neg_or_zero(lambda[i],ss.disc())) {
         cerr << "BUG: Min_sphere_of_spheres_d: center of miniball not in" << endl
              << "     interior of convex hull of support centers." << endl
-             << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html" << endl;
+             << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html" << endl;
         return false;
       }
     
diff --git a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
index 6f5dab660f8..1eb814c208f 100644
--- a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
+++ b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
@@ -79,7 +79,7 @@ namespace CGAL{
     int IpelibVersion() const { return IPELIB_VERSION; }
     int NumFunctions() const { return nbf; }
     virtual const char *Label() const{ return &Name[0]; }
-    const char *About() const {return "http://www.cgal.org";};
+    const char *About() const {return "https://www.cgal.org";};
     virtual const char *SubLabel(int function) const {return &SubLab[function][0];};
     virtual const char *HelpMsg(int function) const{return &HMsg[function][0];};
     void Run (int i, IpePage *page, IpeletHelper *helper) {
@@ -89,7 +89,7 @@ namespace CGAL{
         protected_run(i);
       }
       catch(...){
-        helper->MessageBox("Error : Save your page in a file and submit it to \n http://www.cgal.org/bug_report.html","OK",NULL,NULL);
+        helper->MessageBox("Error : Save your page in a file and submit it to \n https://www.cgal.org/bug_report.html","OK",NULL,NULL);
       }
     };
 
diff --git a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v7.h b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v7.h
index 89275e41373..853eecf880d 100644
--- a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v7.h
+++ b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v7.h
@@ -116,7 +116,7 @@ namespace CGAL{
     int ipelibVersion() const { return ipe::IPELIB_VERSION; }
     int NumFunctions() const { return nbf; }
     virtual const char *Label() const{ return &Name[0]; }
-    const char *About() const {return "http://www.cgal.org";};
+    const char *About() const {return "https://www.cgal.org";};
     virtual const char *SubLabel(int function) const {return &SubLab[function][0];};
     virtual const char *HelpMsg(int function) const{return &HMsg[function][0];};
     bool run (int i, ipe::IpeletData* data, ipe::IpeletHelper* helper) {
@@ -127,7 +127,7 @@ namespace CGAL{
         return true;
       }
       catch(...){
-        helper->messageBox("Error : Save your page in a file and submit it to \n http://www.cgal.org/bug_report.html",NULL,ipe::IpeletHelper::EOkCancelButtons);
+        helper->messageBox("Error : Save your page in a file and submit it to \n https://www.cgal.org/bug_report.html",NULL,ipe::IpeletHelper::EOkCancelButtons);
         return false;
       }
     };
diff --git a/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h b/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h
index 5a382eaa7f5..00e438e6e17 100644
--- a/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h
+++ b/Cartesian_kernel/include/CGAL/Cartesian/Point_2.h
@@ -35,7 +35,7 @@ class PointC2
 {
   typedef PointC2<R_>                       Self;
   typedef typename R_::FT                   FT;
-// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
+// https://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::Vector_2             Vector_2_;
   typedef typename R_::Point_2              Point_2;
 
diff --git a/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h b/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h
index 916203cabe8..7dc3590c309 100644
--- a/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h
+++ b/Cartesian_kernel/include/CGAL/Cartesian/Sphere_3.h
@@ -37,7 +37,7 @@ template <class R_>
 class SphereC3
 {
   typedef typename R_::FT                   FT;
-// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
+// https://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::Point_3              Point_3_;
   typedef typename R_::Vector_3             Vector_3;
   typedef typename R_::Sphere_3             Sphere_3;
diff --git a/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h b/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h
index d7687e4ff83..5aa432b840b 100644
--- a/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h
+++ b/Cartesian_kernel/include/CGAL/Cartesian/Vector_3.h
@@ -35,7 +35,7 @@ namespace CGAL {
 template < class R_ >
 class VectorC3
 {
-// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
+// https://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::FT                   FT_;
   typedef typename R_::Point_3              Point_3;
   typedef typename R_::Vector_3             Vector_3;
diff --git a/Convex_hull_d/include/CGAL/Convex_hull_d.h b/Convex_hull_d/include/CGAL/Convex_hull_d.h
index 9cf9acc6bbc..5fc90b7c858 100644
--- a/Convex_hull_d/include/CGAL/Convex_hull_d.h
+++ b/Convex_hull_d/include/CGAL/Convex_hull_d.h
@@ -34,7 +34,7 @@
 
 #define CGAL_DEPRECATED_HEADER "<CGAL/Convex_hull_d.h>"
 #define CGAL_DEPRECATED_MESSAGE_DETAILS \
-  "The Triangulation package (see http://doc.cgal.org/latest/Triangulation) should be used instead."
+  "The Triangulation package (see https://doc.cgal.org/latest/Triangulation) should be used instead."
 #include <CGAL/internal/deprecation_warning.h>
 
 /*{\Manpage {Convex_hull_d}{R}{Convex Hulls}{C}}*/
diff --git a/Convex_hull_d/include/CGAL/Convex_hull_d_to_polyhedron_3.h b/Convex_hull_d/include/CGAL/Convex_hull_d_to_polyhedron_3.h
index edd34551e7f..a27545aea00 100644
--- a/Convex_hull_d/include/CGAL/Convex_hull_d_to_polyhedron_3.h
+++ b/Convex_hull_d/include/CGAL/Convex_hull_d_to_polyhedron_3.h
@@ -26,7 +26,7 @@
 
 #define CGAL_DEPRECATED_HEADER "<CGAL/Convex_hull_d_to_polyhedron_3.h>"
 #define CGAL_DEPRECATED_MESSAGE_DETAILS \
-  "The Triangulation package (see http://doc.cgal.org/latest/Triangulation) should be used instead."
+  "The Triangulation package (see https://doc.cgal.org/latest/Triangulation) should be used instead."
 #include <CGAL/internal/deprecation_warning.h>
 
 #include <CGAL/Convex_hull_d.h>
diff --git a/Convex_hull_d/include/CGAL/Convex_hull_d_traits_3.h b/Convex_hull_d/include/CGAL/Convex_hull_d_traits_3.h
index f11b26f5753..89acbdd0116 100644
--- a/Convex_hull_d/include/CGAL/Convex_hull_d_traits_3.h
+++ b/Convex_hull_d/include/CGAL/Convex_hull_d_traits_3.h
@@ -26,7 +26,7 @@
 
 #define CGAL_DEPRECATED_HEADER "<CGAL/Convex_hull_d_traits_3.h>"
 #define CGAL_DEPRECATED_MESSAGE_DETAILS \
-  "The Triangulation package (see http://doc.cgal.org/latest/Triangulation) should be used instead."
+  "The Triangulation package (see https://doc.cgal.org/latest/Triangulation) should be used instead."
 #include <CGAL/internal/deprecation_warning.h>
 
 #include <CGAL/Point_3.h>
diff --git a/Convex_hull_d/include/CGAL/Delaunay_d.h b/Convex_hull_d/include/CGAL/Delaunay_d.h
index 15f8aacb814..ce9fc44ca46 100644
--- a/Convex_hull_d/include/CGAL/Delaunay_d.h
+++ b/Convex_hull_d/include/CGAL/Delaunay_d.h
@@ -34,7 +34,7 @@
 
 #define CGAL_DEPRECATED_HEADER "<CGAL/Delaunay_d.h>"
 #define CGAL_DEPRECATED_MESSAGE_DETAILS \
-  "The Triangulation package (see http://doc.cgal.org/latest/Triangulation) should be used instead."
+  "The Triangulation package (see https://doc.cgal.org/latest/Triangulation) should be used instead."
 #include <CGAL/internal/deprecation_warning.h>
 
 /*{\Manpage {Delaunay_d}{R,Lifted_R}{Delaunay Triangulations}{DT}}*/
diff --git a/Convex_hull_d/include/CGAL/Regular_complex_d.h b/Convex_hull_d/include/CGAL/Regular_complex_d.h
index f600ce0718b..7ab47da72bc 100644
--- a/Convex_hull_d/include/CGAL/Regular_complex_d.h
+++ b/Convex_hull_d/include/CGAL/Regular_complex_d.h
@@ -34,7 +34,7 @@
 
 #define CGAL_DEPRECATED_HEADER "<CGAL/Regular_complex_d.h>"
 #define CGAL_DEPRECATED_MESSAGE_DETAILS \
-  "The Triangulation package (see http://doc.cgal.org/latest/Triangulation) should be used instead."
+  "The Triangulation package (see https://doc.cgal.org/latest/Triangulation) should be used instead."
 #include <CGAL/internal/deprecation_warning.h>
 
 #include <CGAL/basic.h>
diff --git a/Documentation/doc/Documentation/Developer_manual/Chapter_submission_process.txt b/Documentation/doc/Documentation/Developer_manual/Chapter_submission_process.txt
index e0181d9eafb..6cbc2efbd5a 100644
--- a/Documentation/doc/Documentation/Developer_manual/Chapter_submission_process.txt
+++ b/Documentation/doc/Documentation/Developer_manual/Chapter_submission_process.txt
@@ -17,7 +17,7 @@ in the library.  This means that they assure that new contributions
 
 Software specifications and implementations should be submitted to the
 editorial board for approval. The process is described in the 
-<A HREF="http://www.cgal.org/review_process_rules.html">submission
+<A HREF="https://www.cgal.org/review_process_rules.html">submission
   and review rules</A>.
 
 One should write a specification for a new package
@@ -29,6 +29,6 @@ Only after approval by the board will packages be included in new
 public releases and then only if they pass the test suite, of course.
 
 The current list of members of the editorial board can be found on the 
-<A HREF="http://www.cgal.org/people.html">web site</A>.
+<A HREF="https://www.cgal.org/people.html">web site</A>.
 
 */
diff --git a/Documentation/doc/Documentation/Installation.txt b/Documentation/doc/Documentation/Installation.txt
index 5c07d5253a7..5f546a8efb2 100644
--- a/Documentation/doc/Documentation/Installation.txt
+++ b/Documentation/doc/Documentation/Installation.txt
@@ -100,19 +100,19 @@ On other distributions, please consult your package manager documentation.
 
 \subsection sseccgalwindows CGAL on Windows
 
-You can download and run `CGAL-\cgalReleaseNumber``-Setup.exe` from http://www.cgal.org/download.html.
+You can download and run `CGAL-\cgalReleaseNumber``-Setup.exe` from https://www.cgal.org/download.html.
 It is a self extracting executable that installs the \cgal source, and that allows you
 to select and download some precompiled third party libraries. However, you will need to compile
 the library using your favorite compiler.
 
-A <a href="http://www.cgal.org/windows_installation.html">tutorial</a> is provided on how to proceed with Microsoft Visual Studio 2010.
+A <a href="https://www.cgal.org/windows_installation.html">tutorial</a> is provided on how to proceed with Microsoft Visual Studio 2010.
 
 
 
 \section secgettingcgal Downloading CGAL 
 
 You can obtain the \cgal library from 
-<A HREF="http://www.cgal.org/download.html">http://www.cgal.org/download.html</A>
+<A HREF="https://www.cgal.org/download.html">https://www.cgal.org/download.html</A>
 and install it yourself.
 
 After you have downloaded the file `CGAL-\cgalReleaseNumber``.tar.gz` containing the
@@ -152,7 +152,7 @@ of \cgal and has its own license.
 
 The only documentation shipped with \cgal sources is the present
 installation manual. The \cgal manual must be downloaded separately from
-<A HREF="http://www.cgal.org/download.html">`http://www.cgal.org/download.html`</A>.
+<A HREF="https://www.cgal.org/download.html">`https://www.cgal.org/download.html`</A>.
 
 \section seccompilers Supported Compilers 
 
@@ -334,7 +334,7 @@ cmake -DCGAL_HEADER_ONLY=ON . # configure \cgal
 
 and we do not need to run `make` anymore.
 
-There is one possible problem when using \cgal in header-only mode on a Windows operating system when compiling a program using several modules (executable programs or dynamic-link libraries DLL). If two different modules use the same static variable, this variable is defined independently in each of these modules. If one module modifies the value of this variable, it will not be modified in the other module, which could induce an unexpected behavior. In \cgal, this concerns only a few specific variables: the <A HREF="http://doc.cgal.org/latest/Generator/classCGAL_1_1Random.html">default random</A>, the <A HREF="http://doc.cgal.org/latest/STL_Extension/group__PkgStlExtensionAssertions.html">failure behavior</A>, <A HREF="http://doc.cgal.org/latest/Stream_support/group__PkgIOstreams.html">IO mode</A>. One example is the following: if you change the default random in one DLL, then if you use the default random in another DLL, you will not obtain the modified default random but the original one.
+There is one possible problem when using \cgal in header-only mode on a Windows operating system when compiling a program using several modules (executable programs or dynamic-link libraries DLL). If two different modules use the same static variable, this variable is defined independently in each of these modules. If one module modifies the value of this variable, it will not be modified in the other module, which could induce an unexpected behavior. In \cgal, this concerns only a few specific variables: the <A HREF="https://doc.cgal.org/latest/Generator/classCGAL_1_1Random.html">default random</A>, the <A HREF="https://doc.cgal.org/latest/STL_Extension/group__PkgStlExtensionAssertions.html">failure behavior</A>, <A HREF="https://doc.cgal.org/latest/Stream_support/group__PkgIOstreams.html">IO mode</A>. One example is the following: if you change the default random in one DLL, then if you use the default random in another DLL, you will not obtain the modified default random but the original one.
 
 \section secessential3rdpartysoftware Essential Third Party Libraries 
 
diff --git a/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt b/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt
index b3688a50612..99b6ca99c44 100644
--- a/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt
+++ b/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt
@@ -335,7 +335,7 @@ and its notion of *concepts* and *models*.
 
 Other resources for \cgal are the rest of the \ref tutorials "tutorials" 
  and the user support page at
-http://www.cgal.org/.
+https://www.cgal.org/.
 
 */
 } /* namespace CGAL */
diff --git a/Documentation/doc/Documentation/main.txt b/Documentation/doc/Documentation/main.txt
index 5800eea5fc7..be308489866 100644
--- a/Documentation/doc/Documentation/main.txt
+++ b/Documentation/doc/Documentation/main.txt
@@ -40,10 +40,10 @@ see the \ref licenseIssues "License" page.
 Manuals for the Previous Releases
 =================================
 
-For releases >= 4.2, visit [http://doc.cgal.org/X.Y](http://doc.cgal.org/4.2)
+For releases >= 4.2, visit [https://doc.cgal.org/X.Y](https://doc.cgal.org/4.2)
 
 For releases X.Y, with 3.1 <= X.Y <= 4.1 visit
-[http://doc.cgal.org/Manual/X.Y/doc_html/cgal_manual/packages.html](http://doc.cgal.org/Manual/3.1/doc_html/cgal_manual/packages.html)
+[https://doc.cgal.org/Manual/X.Y/doc_html/cgal_manual/packages.html](https://doc.cgal.org/Manual/3.1/doc_html/cgal_manual/packages.html)
 
 
 
diff --git a/Documentation/doc/resources/1.8.13/BaseDoxyfile.in b/Documentation/doc/resources/1.8.13/BaseDoxyfile.in
index f83e0d535aa..a6bc2bbb17e 100644
--- a/Documentation/doc/resources/1.8.13/BaseDoxyfile.in
+++ b/Documentation/doc/resources/1.8.13/BaseDoxyfile.in
@@ -278,9 +278,9 @@ ALIASES                = "sc{1}=<span style=\"font-variant: small-caps;\">\1</sp
                          "cgalPkgSince{1}=<B>Introduced in:</B> \cgal \1<BR>" \
                          "cgalPkgDependsOn{1}=<B>Depends on:</B> \1 <BR>" \
                          "cgalPkgLicense{1}=<B>License:</B> \1 <BR>" \
-                         "cgalPkgDemo{2}=<B>Windows Demo:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
-                         "cgalPkgDemo{4}=<B>Windows Demos:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
-                         "cgalPkgDemo{6}=<B>Windows Demos:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\6\">\5</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
+                         "cgalPkgDemo{2}=<B>Windows Demo:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
+                         "cgalPkgDemo{4}=<B>Windows Demos:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
+                         "cgalPkgDemo{6}=<B>Windows Demos:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\6\">\5</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
                          "cgalPkgDescriptionEnd=" \
                          "cgalModifBegin=\htmlonly <div class=\"CGALModification\"> \endhtmlonly \xrefitem Modification \"Modifications\" \"MODIFICATIONS\" " \
                          "cgalModifEnd=\htmlonly </div> \endhtmlonly \latexonly END MODIFICATIONS \endlatexonly" \
diff --git a/Documentation/doc/resources/1.8.13/header.html b/Documentation/doc/resources/1.8.13/header.html
index d55f35f5b1c..43813868edd 100644
--- a/Documentation/doc/resources/1.8.13/header.html
+++ b/Documentation/doc/resources/1.8.13/header.html
@@ -37,7 +37,7 @@ $extrastylesheet
 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
 <div id="back-nav">
   <ul>
-    <li><a href="http://www.cgal.org/">cgal.org</a></li>
+    <li><a href="https://www.cgal.org/">cgal.org</a></li>
     <li><a href="../Manual/index.html">Top</a></li>
     <li><a href="../Manual/general_intro.html">Getting Started</a></li>
     <li><a href="../Manual/tutorials.html">Tutorials</a></li>
diff --git a/Documentation/doc/resources/1.8.13/header_package.html b/Documentation/doc/resources/1.8.13/header_package.html
index bec74f7c493..b8e775ceecd 100644
--- a/Documentation/doc/resources/1.8.13/header_package.html
+++ b/Documentation/doc/resources/1.8.13/header_package.html
@@ -61,7 +61,7 @@ $extrastylesheet
 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
 <div id="back-nav">
   <ul>
-    <li><a href="http://www.cgal.org/">cgal.org</a></li>
+    <li><a href="https://www.cgal.org/">cgal.org</a></li>
     <li><a href="../Manual/index.html">Top</a></li>
     <li><a href="../Manual/general_intro.html">Getting Started</a></li>
     <li><a href="../Manual/tutorials.html">Tutorials</a></li>
diff --git a/Documentation/doc/resources/1.8.14/BaseDoxyfile.in b/Documentation/doc/resources/1.8.14/BaseDoxyfile.in
index 3c639c179ce..9bc583f5cd8 100644
--- a/Documentation/doc/resources/1.8.14/BaseDoxyfile.in
+++ b/Documentation/doc/resources/1.8.14/BaseDoxyfile.in
@@ -279,9 +279,9 @@ ALIASES                = "sc{1}=<span style=\"font-variant: small-caps;\">\1</sp
                          "cgalPkgSince{1}=<B>Introduced in:</B> \cgal \1<BR>" \
                          "cgalPkgDependsOn{1}=<B>Depends on:</B> \1 <BR>" \
                          "cgalPkgLicense{1}=<B>License:</B> \1 <BR>" \
-                         "cgalPkgDemo{2}=<B>Windows Demo:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
-                         "cgalPkgDemo{4}=<B>Windows Demos:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
-                         "cgalPkgDemo{6}=<B>Windows Demos:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\6\">\5</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
+                         "cgalPkgDemo{2}=<B>Windows Demo:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
+                         "cgalPkgDemo{4}=<B>Windows Demos:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
+                         "cgalPkgDemo{6}=<B>Windows Demos:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\6\">\5</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>" \
                          "cgalPkgDescriptionEnd=" \
                          "cgalModifBegin=\htmlonly <div class=\"CGALModification\"> \endhtmlonly \xrefitem Modification \"Modifications\" \"MODIFICATIONS\" " \
                          "cgalModifEnd=\htmlonly </div> \endhtmlonly \latexonly END MODIFICATIONS \endlatexonly" \
diff --git a/Documentation/doc/resources/1.8.14/header.html b/Documentation/doc/resources/1.8.14/header.html
index d55f35f5b1c..43813868edd 100644
--- a/Documentation/doc/resources/1.8.14/header.html
+++ b/Documentation/doc/resources/1.8.14/header.html
@@ -37,7 +37,7 @@ $extrastylesheet
 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
 <div id="back-nav">
   <ul>
-    <li><a href="http://www.cgal.org/">cgal.org</a></li>
+    <li><a href="https://www.cgal.org/">cgal.org</a></li>
     <li><a href="../Manual/index.html">Top</a></li>
     <li><a href="../Manual/general_intro.html">Getting Started</a></li>
     <li><a href="../Manual/tutorials.html">Tutorials</a></li>
diff --git a/Documentation/doc/resources/1.8.14/header_package.html b/Documentation/doc/resources/1.8.14/header_package.html
index bec74f7c493..b8e775ceecd 100644
--- a/Documentation/doc/resources/1.8.14/header_package.html
+++ b/Documentation/doc/resources/1.8.14/header_package.html
@@ -61,7 +61,7 @@ $extrastylesheet
 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
 <div id="back-nav">
   <ul>
-    <li><a href="http://www.cgal.org/">cgal.org</a></li>
+    <li><a href="https://www.cgal.org/">cgal.org</a></li>
     <li><a href="../Manual/index.html">Top</a></li>
     <li><a href="../Manual/general_intro.html">Getting Started</a></li>
     <li><a href="../Manual/tutorials.html">Tutorials</a></li>
diff --git a/Documentation/doc/resources/1.8.4/BaseDoxyfile.in b/Documentation/doc/resources/1.8.4/BaseDoxyfile.in
index ab7abbd124b..4a3fea1307b 100644
--- a/Documentation/doc/resources/1.8.4/BaseDoxyfile.in
+++ b/Documentation/doc/resources/1.8.4/BaseDoxyfile.in
@@ -270,9 +270,9 @@ ALIASES += "cgalPkgDesc{1}=<div class=\"PkgDescription\">\1</div>"
 ALIASES += "cgalPkgSince{1}=<B>Introduced in:</B> \cgal \1<BR>"
 ALIASES += "cgalPkgDependsOn{1}=<B>Depends on:</B> \1 <BR>"
 ALIASES += "cgalPkgLicense{1}=<B>License:</B> \1 <BR>"
-ALIASES += "cgalPkgDemo{2}=<B>Windows Demo:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>"
-ALIASES += "cgalPkgDemo{4}=<B>Windows Demos:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>"
-ALIASES += "cgalPkgDemo{6}=<B>Windows Demos:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a>, <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\6\">\5</a><BR><B>Common Demo Dlls:</B> <a href=\"http://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>"
+ALIASES += "cgalPkgDemo{2}=<B>Windows Demo:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>"
+ALIASES += "cgalPkgDemo{4}=<B>Windows Demos:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>"
+ALIASES += "cgalPkgDemo{6}=<B>Windows Demos:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\2\">\1</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\4\">\3</a>, <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/\6\">\5</a><BR><B>Common Demo Dlls:</B> <a href=\"https://www.cgal.org/demo/${CGAL_CREATED_VERSION_NUM}/CGAL-demoDLLs.zip\">dlls</a><BR>"
 
 ALIASES += "cgalPkgDescriptionEnd="
 
diff --git a/Documentation/doc/resources/1.8.4/header.html b/Documentation/doc/resources/1.8.4/header.html
index c1e426d6a78..07461540edd 100644
--- a/Documentation/doc/resources/1.8.4/header.html
+++ b/Documentation/doc/resources/1.8.4/header.html
@@ -41,7 +41,7 @@ $search
 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
 <div id="back-nav">
   <ul>
-    <li><a href="http://www.cgal.org/">cgal.org</a></li>
+    <li><a href="https://www.cgal.org/">cgal.org</a></li>
     <li><a href="../Manual/index.html">Top</a></li>
     <li><a href="../Manual/general_intro.html">Getting Started</a></li>
     <li><a href="../Manual/tutorials.html">Tutorials</a></li>
diff --git a/Documentation/doc/resources/1.8.4/header_package.html b/Documentation/doc/resources/1.8.4/header_package.html
index d82462836ff..1a655bea646 100644
--- a/Documentation/doc/resources/1.8.4/header_package.html
+++ b/Documentation/doc/resources/1.8.4/header_package.html
@@ -58,7 +58,7 @@ MathJax.Hub.Config({
 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
 <div id="back-nav">
   <ul>
-    <li><a href="http://www.cgal.org/">cgal.org</a></li>
+    <li><a href="https://www.cgal.org/">cgal.org</a></li>
     <li><a href="../Manual/index.html">Top</a></li>
     <li><a href="../Manual/general_intro.html">Getting Started</a></li>
     <li><a href="../Manual/tutorials.html">Tutorials</a></li>
diff --git a/Documentation/doc/scripts/generate_how_to_cite.py b/Documentation/doc/scripts/generate_how_to_cite.py
index a0d810f07e1..1167b885ae0 100644
--- a/Documentation/doc/scripts/generate_how_to_cite.py
+++ b/Documentation/doc/scripts/generate_how_to_cite.py
@@ -15,7 +15,7 @@ result_bib=r"""@book{ cgal:eb-${CGAL_RELEASE_YEAR_ID}
 , publisher     = "{CGAL Editorial Board}"
 , edition     = "{${CGAL_CREATED_VERSION_NUM}}"
 , year         = ${CGAL_BUILD_YEAR4}
-, url =    "http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html"
+, url =    "https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html"
 }"""
 
 result_txt=r"""// This file was generated by generate_how_to_cite.py. You shouldn't modify it directly.
@@ -46,7 +46,7 @@ software.
 
 If you want to cite the %CGAL Library or project as a whole, please
 
-- cite: %CGAL, Computational Geometry Algorithms Library, http://www.cgal.org 
+- cite: %CGAL, Computational Geometry Algorithms Library, https://www.cgal.org 
 - use the first bibtex entry from the file <a href="how_to_cite_cgal.bib">how_to_cite_cgal.bib</a>.
 
 ## Citing the User and Reference Manual ##
@@ -66,7 +66,7 @@ The %CGAL Project.
  <em>%CGAL User and Reference Manual</em>.
  %CGAL Editorial Board, ${CGAL_CREATED_VERSION_NUM} edition, ${CGAL_BUILD_YEAR4}.
 [&nbsp;<a href="how_to_cite.html#cgal:eb-${CGAL_RELEASE_YEAR_ID}">bib</a>&nbsp;| 
-<a href="http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html">http</a>&nbsp;]
+<a href="https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html">http</a>&nbsp;]
 
 </td>
 </tr>
@@ -86,7 +86,7 @@ result_html=r"""<h1>how_to_cite_cgal.bib</h1><a name="cgal:eb-${CGAL_RELEASE_YEA
   publisher = {{CGAL Editorial Board}},
   edition = {{${CGAL_CREATED_VERSION_NUM}}},
   year = ${CGAL_BUILD_YEAR4},
-  url = {<a href="http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html">http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html</a>}
+  url = {<a href="https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html">https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html</a>}
 }
 </pre>
 
@@ -102,7 +102,7 @@ def gen_bib_entry(title, authors, bib, anchor):
 , publisher =  \"{CGAL Editorial Board}\"\n\
 , edition =     \"{${CGAL_CREATED_VERSION_NUM}}\"\n\
 , booktitle =   \"{CGAL} User and Reference Manual\"\n\
-, url = \"http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"\"\n\
+, url = \"https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"\"\n\
 , year =        ${CGAL_BUILD_YEAR4}\n\
 }\n"
   return res
@@ -118,7 +118,7 @@ def gen_txt_entry(title, authors, bib, anchor,k):
  In <em>%CGAL User and Reference Manual</em>. %CGAL Editorial Board,\n\
   ${CGAL_CREATED_VERSION_NUM} edition, ${CGAL_BUILD_YEAR4}.\n\
 [&nbsp;<a href=\"how_to_cite.html#"+bib+"-${CGAL_RELEASE_YEAR_ID}\">bib</a>&nbsp;| \n\
-<a href=\"http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"\">http</a>&nbsp;]\n\
+<a href=\"https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"\">http</a>&nbsp;]\n\
 \n\
 </td>\n\
 </tr>\n\n\n"
@@ -132,7 +132,7 @@ def gen_html_entry(title, authors, bib, anchor):
   publisher = {{CGAL Editorial Board}},\n\
   edition = {{${CGAL_CREATED_VERSION_NUM}}},\n\
   booktitle = {{CGAL} User and Reference Manual},\n\
-  url = {<a href=\"http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"\">http://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"</a>},\n\
+  url = {<a href=\"https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"\">https://doc.cgal.org/${CGAL_CREATED_VERSION_NUM}/Manual/packages.html#"+anchor+"</a>},\n\
   year = ${CGAL_BUILD_YEAR4}\n\
 }\n\
 </pre>\n\n"
diff --git a/GraphicsView/demo/Alpha_shapes_2/about_Alpha_shapes_2.html b/GraphicsView/demo/Alpha_shapes_2/about_Alpha_shapes_2.html
index f9d21ee7663..01533b1b591 100644
--- a/GraphicsView/demo/Alpha_shapes_2/about_Alpha_shapes_2.html
+++ b/GraphicsView/demo/Alpha_shapes_2/about_Alpha_shapes_2.html
@@ -3,8 +3,8 @@
     <h2>Alpha Shapes</h2>
     <p>Copyright &copy; 2010 GeometryFactory</p>
     <p>This application illustrates the 2D Alpha Shapes
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/AlphaShape2">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/AlphaShape2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Apollonius_graph_2/about_Apollonius_graph_2.html b/GraphicsView/demo/Apollonius_graph_2/about_Apollonius_graph_2.html
index febbb883260..d8aec3a5498 100644
--- a/GraphicsView/demo/Apollonius_graph_2/about_Apollonius_graph_2.html
+++ b/GraphicsView/demo/Apollonius_graph_2/about_Apollonius_graph_2.html
@@ -3,7 +3,7 @@
     <h2>Apollonius Graph</h2>
     <p>Copyright &copy; 2010 GeometryFactory</p>
     <p>This application illustrates the 2D Apollonius graph.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/ApolloniusGraph2">the online
+    <p>See also <a href="https://www.cgal.org/Pkg/ApolloniusGraph2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Bounding_volumes/about_Bounding_volumes.html b/GraphicsView/demo/Bounding_volumes/about_Bounding_volumes.html
index d2a6be9a656..bbeb7b21d83 100644
--- a/GraphicsView/demo/Bounding_volumes/about_Bounding_volumes.html
+++ b/GraphicsView/demo/Bounding_volumes/about_Bounding_volumes.html
@@ -3,8 +3,8 @@
     <h2>Bounding Volumes</h2>
     <p>Copyright &copy; 2010 ETH Zurich</p>
     <p>This application illustrates the Bounding Volume Algorithms
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/BoundingVolumes">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/BoundingVolumes">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Circular_kernel_2/about_Circular_kernel_2.html b/GraphicsView/demo/Circular_kernel_2/about_Circular_kernel_2.html
index 648ea56e0e5..af1efcf9c59 100644
--- a/GraphicsView/demo/Circular_kernel_2/about_Circular_kernel_2.html
+++ b/GraphicsView/demo/Circular_kernel_2/about_Circular_kernel_2.html
@@ -3,8 +3,8 @@
     <h2>Circular Kernel</h2>
     <p>Copyright &copy; 2008 GeometryFactory</p>
     <p>This application illustrates the 2D Circular Kernel
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/CircularKernel2">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/CircularKernel2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Generator/about_Generator_2.html b/GraphicsView/demo/Generator/about_Generator_2.html
index a3a807a4bf3..a83a9db8d8d 100644
--- a/GraphicsView/demo/Generator/about_Generator_2.html
+++ b/GraphicsView/demo/Generator/about_Generator_2.html
@@ -3,8 +3,8 @@
     <h2>2D Object Generators</h2>
     <p>Copyright &copy; 2010 GeometryFactory</p>
     <p>This application illustrates the 2D object generators
-      of <a href="http://www.cgal.org/">CGAL</a></p>
-    <p>See also <a href="http://www.cgal.org/Pkg/Generator">the online
+      of <a href="https://www.cgal.org/">CGAL</a></p>
+    <p>See also <a href="https://www.cgal.org/Pkg/Generator">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/L1_Voronoi_diagram_2/about_L1_voronoi_diagram_2.html b/GraphicsView/demo/L1_Voronoi_diagram_2/about_L1_voronoi_diagram_2.html
index 220cf094b7f..14f782698ef 100644
--- a/GraphicsView/demo/L1_Voronoi_diagram_2/about_L1_voronoi_diagram_2.html
+++ b/GraphicsView/demo/L1_Voronoi_diagram_2/about_L1_voronoi_diagram_2.html
@@ -3,7 +3,7 @@
     <h2>L1 Voronoi diagram of points</h2>
     <p>Copyright &copy; 2010 Ophir Setter</p>
     <p>This application illustrates the 2D Voronoi diagram of points under
-      the L1 metric, by using <a href="http://www.cgal.org/">CGAL</a> 
+      the L1 metric, by using <a href="https://www.cgal.org/">CGAL</a> 
       envelope algorithm.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Largest_empty_rect_2/about_Largest_empty_rectangle_2.html b/GraphicsView/demo/Largest_empty_rect_2/about_Largest_empty_rectangle_2.html
index 9de593cb8b2..566ae0baaac 100644
--- a/GraphicsView/demo/Largest_empty_rect_2/about_Largest_empty_rectangle_2.html
+++ b/GraphicsView/demo/Largest_empty_rect_2/about_Largest_empty_rectangle_2.html
@@ -3,8 +3,8 @@
     <h2>2D Largest Empty Iso Rectangle</h2>
     <p>Copyright &copy; 2010 GeometryFactory</p>
     <p>This application illustrates the 2D largest empty iso rectangle
-      of <a href="http://www.cgal.org/">CGAL</a></p>
-    <p>See also <a href="http://www.cgal.org/Pkg/InscribedAreas">the online
+      of <a href="https://www.cgal.org/">CGAL</a></p>
+    <p>See also <a href="https://www.cgal.org/Pkg/InscribedAreas">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Periodic_2_triangulation_2/about_Periodic_2_triangulation_2.html b/GraphicsView/demo/Periodic_2_triangulation_2/about_Periodic_2_triangulation_2.html
index 934c48a06c2..afd0b7c13d2 100644
--- a/GraphicsView/demo/Periodic_2_triangulation_2/about_Periodic_2_triangulation_2.html
+++ b/GraphicsView/demo/Periodic_2_triangulation_2/about_Periodic_2_triangulation_2.html
@@ -3,7 +3,7 @@
     <h2>2D Periodic Triangulation</h2>
     <p>Copyright &copy; 2010 Nico Kruithof</p>
     <p>This application illustrates the 2D Periodic triangulation
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/Periodic2Triangulation2">the online manual</a>.</p>
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/Periodic2Triangulation2">the online manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Polygon/about_Polygon_2.html b/GraphicsView/demo/Polygon/about_Polygon_2.html
index 29a5865b096..87ecca8ddbd 100644
--- a/GraphicsView/demo/Polygon/about_Polygon_2.html
+++ b/GraphicsView/demo/Polygon/about_Polygon_2.html
@@ -3,8 +3,8 @@
     <h2>Polygon</h2>
     <p>Copyright &copy; 2008 GeometryFactory</p>
     <p>This application illustrates the 2D Polygon
-      of <a href="http://www.cgal.org/">CGAL</a></p>
-    <p>See also <a href="http://www.cgal.org/Pkg/Polygon2">the online
+      of <a href="https://www.cgal.org/">CGAL</a></p>
+    <p>See also <a href="https://www.cgal.org/Pkg/Polygon2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Segment_Delaunay_graph_2/about_Segment_voronoi_2.html b/GraphicsView/demo/Segment_Delaunay_graph_2/about_Segment_voronoi_2.html
index bfee885ab18..54fa2ac35fd 100644
--- a/GraphicsView/demo/Segment_Delaunay_graph_2/about_Segment_voronoi_2.html
+++ b/GraphicsView/demo/Segment_Delaunay_graph_2/about_Segment_voronoi_2.html
@@ -3,8 +3,8 @@
     <h2>2D Segment Voronoi Diagram</h2>
     <p>Copyright &copy; 2008 GeometryFactory</p>
     <p>This application illustrates the 2D segment Voronoi diagram
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/SegmentDelaunayGraph2">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/SegmentDelaunayGraph2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Segment_Delaunay_graph_Linf_2/about_Segment_voronoi_2.html b/GraphicsView/demo/Segment_Delaunay_graph_Linf_2/about_Segment_voronoi_2.html
index 8bffc1eed1b..7568cfe3ebd 100644
--- a/GraphicsView/demo/Segment_Delaunay_graph_Linf_2/about_Segment_voronoi_2.html
+++ b/GraphicsView/demo/Segment_Delaunay_graph_Linf_2/about_Segment_voronoi_2.html
@@ -3,8 +3,8 @@
     <h2>L Infinity Segment Delaunay Graphs</h2>
     <p>Copyright &copy; 2015 GeometryFactory</p>
     <p>This application illustrates the 2D L infinity segment Delaunay graph.
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/SDGLinf">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/SDGLinf">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Snap_rounding_2/about_Snap_rounding_2.html b/GraphicsView/demo/Snap_rounding_2/about_Snap_rounding_2.html
index 2f5f2e1c69c..68b237a601d 100644
--- a/GraphicsView/demo/Snap_rounding_2/about_Snap_rounding_2.html
+++ b/GraphicsView/demo/Snap_rounding_2/about_Snap_rounding_2.html
@@ -3,7 +3,7 @@
     <h2>Snap Rounding</h2>
     <p>Copyright &copy; 2010 GeometryFactory</p>
     <p>This application illustrates the 2D Snap Rounding.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/SnapRounding2">the online
+    <p>See also <a href="https://www.cgal.org/Pkg/SnapRounding2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Spatial_searching_2/about_Spatial_searching_2.html b/GraphicsView/demo/Spatial_searching_2/about_Spatial_searching_2.html
index 993d3440ca3..af97054aa48 100644
--- a/GraphicsView/demo/Spatial_searching_2/about_Spatial_searching_2.html
+++ b/GraphicsView/demo/Spatial_searching_2/about_Spatial_searching_2.html
@@ -3,8 +3,8 @@
     <h2>2D Spatial Searching</h2>
     <p>Copyright &copy; 2010 GeometryFactory</p>
     <p>This application illustrates the 2D spatial searching package
-      of <a href="http://www.cgal.org/">CGAL</a></p>
-    <p>See also <a href="http://www.cgal.org/Pkg/SpatialSearchingD">the online
+      of <a href="https://www.cgal.org/">CGAL</a></p>
+    <p>See also <a href="https://www.cgal.org/Pkg/SpatialSearchingD">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Stream_lines_2/about_Stream_lines_2.html b/GraphicsView/demo/Stream_lines_2/about_Stream_lines_2.html
index 06d13d9c917..84ca29b1e96 100644
--- a/GraphicsView/demo/Stream_lines_2/about_Stream_lines_2.html
+++ b/GraphicsView/demo/Stream_lines_2/about_Stream_lines_2.html
@@ -3,7 +3,7 @@
     <h2>Streamlines</h2>
     <p>Copyright &copy; 2010 GeometryFactory</p>
     <p>This application illustrates the 2D Streamlines.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/PlacementOfStreamlines2">the online
+    <p>See also <a href="https://www.cgal.org/Pkg/PlacementOfStreamlines2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Triangulation_2/about_Constrained_Delaunay_triangulation_2.html b/GraphicsView/demo/Triangulation_2/about_Constrained_Delaunay_triangulation_2.html
index 51dbfb1c7c7..4bfa28b5df5 100644
--- a/GraphicsView/demo/Triangulation_2/about_Constrained_Delaunay_triangulation_2.html
+++ b/GraphicsView/demo/Triangulation_2/about_Constrained_Delaunay_triangulation_2.html
@@ -3,8 +3,8 @@
     <h2>Constrained Delaunay Triangulation</h2>
     <p>Copyright &copy; 2008 GeometryFactory</p>
     <p>This application illustrates the 2D Constrained Delaunay
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/Triangulation2">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/Triangulation2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Triangulation_2/about_Delaunay_triangulation_2.html b/GraphicsView/demo/Triangulation_2/about_Delaunay_triangulation_2.html
index 3d84d187d10..cee38a7e5cd 100644
--- a/GraphicsView/demo/Triangulation_2/about_Delaunay_triangulation_2.html
+++ b/GraphicsView/demo/Triangulation_2/about_Delaunay_triangulation_2.html
@@ -3,9 +3,9 @@
     <h2>Delaunay Triangulation</h2>
     <p>Copyright &copy; 2008 GeometryFactory</p>
     <p>This application illustrates the 2D Delaunay triangulation
-      of <a href="http://www.cgal.org/">CGAL</a>, and its dual Voronoi
+      of <a href="https://www.cgal.org/">CGAL</a>, and its dual Voronoi
       diagram.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/Triangulation2">the online
+    <p>See also <a href="https://www.cgal.org/Pkg/Triangulation2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/Triangulation_2/about_Regular_triangulation_2.html b/GraphicsView/demo/Triangulation_2/about_Regular_triangulation_2.html
index 02e8fc29ae0..5f0c496bda8 100644
--- a/GraphicsView/demo/Triangulation_2/about_Regular_triangulation_2.html
+++ b/GraphicsView/demo/Triangulation_2/about_Regular_triangulation_2.html
@@ -3,9 +3,9 @@
     <h2>Delaunay Triangulation</h2>
     <p>Copyright &copy; 2008 GeometryFactory</p>
     <p>This application illustrates the 2D Regular triangulation
-      of <a href="http://www.cgal.org/">CGAL</a>, and its dual Power
+      of <a href="https://www.cgal.org/">CGAL</a>, and its dual Power
       diagram.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/Triangulation2">the online
+    <p>See also <a href="https://www.cgal.org/Pkg/Triangulation2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/GraphicsView/demo/resources/about_CGAL.html b/GraphicsView/demo/resources/about_CGAL.html
index 6b2b2a5d943..f2f0fb9318b 100644
--- a/GraphicsView/demo/resources/about_CGAL.html
+++ b/GraphicsView/demo/resources/about_CGAL.html
@@ -3,6 +3,6 @@
     <p><img src=":/cgal/logos/CGAL.png"></p>
     <h2>Computational Geometry Algorithms Library<!--CGAL_VERSION--></h2>
     <p>CGAL provides efficient and reliable geometric algorithms in the form of a C++ library.</p>
-    <p>For more information visit <a href="http://www.cgal.org/">www.cgal.org</a></p>
+    <p>For more information visit <a href="https://www.cgal.org/">www.cgal.org</a></p>
   </body>
 </html>
diff --git a/Installation/CHANGES.md b/Installation/CHANGES.md
index 1530287722b..78318dd2705 100644
--- a/Installation/CHANGES.md
+++ b/Installation/CHANGES.md
@@ -2958,7 +2958,7 @@ This is a bug fix release.
 -   CAUTION: Since version 3.3.1, CGAL is no longer compatible with the
     official release of TAUCS (currently 2.2). Make sure to use the
     version modified by the CGAL project and available from the download
-    section of http://www.cgal.org.
+    section of https://www.cgal.org.
 
 Release 3.3
 -----------
diff --git a/Installation/INSTALL.md b/Installation/INSTALL.md
index add8465de9b..043e7643757 100644
--- a/Installation/INSTALL.md
+++ b/Installation/INSTALL.md
@@ -7,13 +7,13 @@ are for the most common use cases, and cover the command line tools.
 For further information, or in case of problems, please see the
 detailed installation instructions, which can be found in this
 distribution in the file ./doc_html/index.html or on the CGAL website
-http://doc.cgal.org/latest/Manual/installation.html
+https://doc.cgal.org/latest/Manual/installation.html
 
 The documentation of CGAL is available in PDF and HTML formats.
 It is not bundled with the software but can be downloaded separately
-at <http://www.cgal.org/Manual>.
+at <https://www.cgal.org/Manual>.
 
-For more information about CGAL, see the <http://www.cgal.org/>.
+For more information about CGAL, see the <https://www.cgal.org/>.
 
 In the current file, x.y is an implicit replacement for the current version
 of CGAL (3.5.1, 3.6, and so on).
diff --git a/Installation/LICENSE b/Installation/LICENSE
index c13ee28b449..677312c96e7 100644
--- a/Installation/LICENSE
+++ b/Installation/LICENSE
@@ -39,4 +39,4 @@ examples and some demos) are licensed under a very permissive license. The
 exact license text can be found in the file LICENSE.FREE_USE.
 
 More information on the CGAL license can be found at
-http://www.cgal.org/license.html
+https://www.cgal.org/license.html
diff --git a/Installation/auxiliary/cgal_create_cmake_script.1 b/Installation/auxiliary/cgal_create_cmake_script.1
index d06bc44e003..0ef7b753a3c 100644
--- a/Installation/auxiliary/cgal_create_cmake_script.1
+++ b/Installation/auxiliary/cgal_create_cmake_script.1
@@ -33,10 +33,10 @@ files in the current directory are compiled and linked into one executable.
 .B test
 Create a cmake script that is suited for the testsuite used by the CGAL developers.
 .SH AUTHOR
-The CGAL project (http://www.cgal.org/).
+The CGAL project (https://www.cgal.org/).
 .SH "REPORTING BUGS"
-Report bugs to <cgal-discuss@inria.fr> (see http://www.cgal.org/
+Report bugs to <cgal-discuss@inria.fr> (see https://www.cgal.org/
 for further instructions).
 .SH "SEE ALSO"
-The full documentation for CGAL is available at http://www.cgal.org/ in PDF and
+The full documentation for CGAL is available at https://www.cgal.org/ in PDF and
 HTML format.
diff --git a/Installation/doc_html/index.html b/Installation/doc_html/index.html
index a791ff1d7df..0c67b663e5e 100644
--- a/Installation/doc_html/index.html
+++ b/Installation/doc_html/index.html
@@ -30,7 +30,7 @@ in the form of a C++ library.
 <li><a href ="Manual/index.html">CGAL Manual - Table of Contents</a>
 <li><a href ="Manual/packages.html">CGAL Manual - Package Overview</a>
 <li>You can also access the CGAL Online Manual from the
-  <a href="http://doc.cgal.org/">CGAL website</a>.
+  <a href="https://doc.cgal.org/">CGAL website</a>.
 </ul>
 
 
@@ -38,8 +38,8 @@ in the form of a C++ library.
 <h3>Further Links</h3>
 
 <ul>
-<li><a href ="http://www.cgal.org/">CGAL Homepage</a>
-<li><a href ="http://www.cgal.org/FAQ.html#installation">FAQ concerning Installation</a>
+<li><a href ="https://www.cgal.org/">CGAL Homepage</a>
+<li><a href ="https://www.cgal.org/FAQ.html#installation">FAQ concerning Installation</a>
 <li><a href ="http://www.boost.org/doc/">Boost Documentation</a>
 <li><a href ="http://en.cppreference.com/w/">STL Reference</a>
 </ul>
@@ -51,7 +51,7 @@ in the form of a C++ library.
 with Open Source software free of charge.  Using CGAL in other contexts can be
 done by obtaining a commercial license from
 <a href="http://www.geometryfactory.com">GeometryFactory</a>.
-For more details see the <a href="http://www.cgal.org/license.html">License</a> page.
+For more details see the <a href="https://www.cgal.org/license.html">License</a> page.
 <p>
 
 </body>
diff --git a/Installation/include/CGAL/config.h b/Installation/include/CGAL/config.h
index b23bb91ccd9..441188bc3f3 100644
--- a/Installation/include/CGAL/config.h
+++ b/Installation/include/CGAL/config.h
@@ -412,7 +412,7 @@
 #    warning "Your configuration may exhibit run-time errors in CGAL code"
 #    warning "This appears with g++ 4.0 on MacOSX when optimizing"
 #    warning "You can disable this warning using -DCGAL_NO_WARNING_FOR_MACOSX_GCC_4_0_BUG"
-#    warning "For more information, see http://www.cgal.org/FAQ.html#mac_optimization_bug"
+#    warning "For more information, see https://www.cgal.org/FAQ.html#mac_optimization_bug"
 #  endif
 #endif
 
diff --git a/Installation/src/CGAL_libs_verinfo.rc.in b/Installation/src/CGAL_libs_verinfo.rc.in
index 82e75b7dfa7..d1f838e8db6 100644
--- a/Installation/src/CGAL_libs_verinfo.rc.in
+++ b/Installation/src/CGAL_libs_verinfo.rc.in
@@ -26,7 +26,7 @@
 
 #define CGAL_VER_VERSION CGAL_VERSION_MAJOR,CGAL_VERSION_MINOR,CGAL_VERSION_PATCH,CGAL_VERSION_BUILD
 #define CGAL_VER_VERSION_STR CGAL_VER_str(CGAL_VERSION)
-#define CGAL_VER_COMPANYNAME_STR "The CGAL Project, http://www.cgal.org/\0"
+#define CGAL_VER_COMPANYNAME_STR "The CGAL Project, https://www.cgal.org/\0"
 #define CGAL_VER_FILEDESCRIPTION_STR "@LIBRARY_NAME@ Library\0"
 #define CGAL_VER_FILEVERSION_STR CGAL_VER_VERSION_STR
 #define CGAL_VER_ORIGINALFILENAME_STR CGAL_LIB_FULLNAME CGAL_VER_EMPTY_STR
diff --git a/Kernel_23/include/CGAL/Sphere_3.h b/Kernel_23/include/CGAL/Sphere_3.h
index 636363af8e1..93470462da1 100644
--- a/Kernel_23/include/CGAL/Sphere_3.h
+++ b/Kernel_23/include/CGAL/Sphere_3.h
@@ -39,7 +39,7 @@ template <class R_>
 class Sphere_3 : public R_::Kernel_base::Sphere_3
 {
   typedef typename R_::FT                    FT;
-// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
+// https://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::Point_3               Point_3_;
   typedef typename R_::Circle_3              Circle_3;
   typedef typename R_::Aff_transformation_3  Aff_transformation_3;
diff --git a/Kernel_23/include/CGAL/Vector_3.h b/Kernel_23/include/CGAL/Vector_3.h
index 5533d2d3994..82818e8d229 100644
--- a/Kernel_23/include/CGAL/Vector_3.h
+++ b/Kernel_23/include/CGAL/Vector_3.h
@@ -43,7 +43,7 @@ template <class R_>
 class Vector_3 : public R_::Kernel_base::Vector_3
 {
   typedef typename R_::RT                    RT;
-// http://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
+// https://doc.cgal.org/latest/Manual/devman_code_format.html#secprogramming_conventions
   typedef typename R_::FT                    FT_;
   typedef typename R_::Segment_3             Segment_3;
   typedef typename R_::Ray_3                 Ray_3;
diff --git a/Linear_cell_complex/benchmark/README.TXT b/Linear_cell_complex/benchmark/README.TXT
index f3ff9db7345..a721960047d 100644
--- a/Linear_cell_complex/benchmark/README.TXT
+++ b/Linear_cell_complex/benchmark/README.TXT
@@ -17,7 +17,7 @@ INSTALLATION:
 
 1) Install all the following libraries:
 
-CGAL: http://www.cgal.org/
+CGAL: https://www.cgal.org/
 CGoGN: http://cgogn.u-strasbg.fr/
 OpenMesh: http://www.openmesh.org/
 OpenVolumeMesh: http://www.openvolumemesh.org/
diff --git a/Linear_cell_complex/demo/Linear_cell_complex/about_Linear_cell_complex_3.html b/Linear_cell_complex/demo/Linear_cell_complex/about_Linear_cell_complex_3.html
index 1adca850b5b..9628239fd8b 100644
--- a/Linear_cell_complex/demo/Linear_cell_complex/about_Linear_cell_complex_3.html
+++ b/Linear_cell_complex/demo/Linear_cell_complex/about_Linear_cell_complex_3.html
@@ -3,8 +3,8 @@
     <h2>3D Linear_cell_complex</h2>
     <p>Copyright &copy; 2011 CNRS and LIRIS' Establishments</p>
     <p>This application illustrates the 3D Linear_cell_complex package
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/LinearCellComplex">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/LinearCellComplex">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/Maintenance/deb/ANNOUNCEMENT.beta b/Maintenance/deb/ANNOUNCEMENT.beta
index 3da4a9ae093..ec79d927b55 100644
--- a/Maintenance/deb/ANNOUNCEMENT.beta
+++ b/Maintenance/deb/ANNOUNCEMENT.beta
@@ -20,4 +20,4 @@ http://www.joachim-reichel.de/debian/repository/pool/main/c/cgal/
 For the final 4.1 release, similar packages will be uploaded to the
 official Debian repository and/or be available from the CGAL web site.
 
-See also http://www.cgal.org/FAQ.html#debian_packages .
+See also https://www.cgal.org/FAQ.html#debian_packages .
diff --git a/Maintenance/deb/ANNOUNCEMENT.final b/Maintenance/deb/ANNOUNCEMENT.final
index 65817283764..6e42416b3e0 100644
--- a/Maintenance/deb/ANNOUNCEMENT.final
+++ b/Maintenance/deb/ANNOUNCEMENT.final
@@ -15,4 +15,4 @@ libcgal-ipelets.
 In case you want to download the packages manually, have a look at
 ftp://ftp.mpi-sb.mpg.de/pub/outgoing/CGAL/debian/pool/main/c/cgal/
 
-See also http://www.cgal.org/FAQ.html#debian_packages .
+See also https://www.cgal.org/FAQ.html#debian_packages .
diff --git a/Maintenance/deb/sid/debian/README.Debian b/Maintenance/deb/sid/debian/README.Debian
index 5f53b66bd9e..4be997664d7 100644
--- a/Maintenance/deb/sid/debian/README.Debian
+++ b/Maintenance/deb/sid/debian/README.Debian
@@ -1,7 +1,7 @@
 README.Debian
 -------------
 
-The homepage of CGAL (http://www.cgal.org/) offers more information about CGAL.
+The homepage of CGAL (https://www.cgal.org/) offers more information about CGAL.
 In particular, a mailing list and the documentation for the library (in PDF and
 HTML) are available. The authors ask you to give some feedback about your usage
 of CGAL in a short questionnaire (in the download section).
@@ -12,7 +12,7 @@ Documentation
 
 Note that the CGAL documentation cannot be packaged for Debian due to unclear
 license conditions. The complete documentation in PDF and HTML is available at
-http://www.cgal.org/.
+https://www.cgal.org/.
 
 
 Demos and examples
diff --git a/Maintenance/deb/sid/debian/control b/Maintenance/deb/sid/debian/control
index e871f4f1eb1..865bd762a15 100644
--- a/Maintenance/deb/sid/debian/control
+++ b/Maintenance/deb/sid/debian/control
@@ -8,7 +8,7 @@ Build-Depends: debhelper (>= 9), dpkg-awk, cmake, zlib1g-dev, libboost-dev,
  libipe-dev (>= 7), ipe
 Standards-Version: 3.9.3
 Section: libs
-Homepage: http://www.cgal.org/
+Homepage: https://www.cgal.org/
 XS-Autobuild: yes
 
 Package: libcgal10
diff --git a/Maintenance/deb/sid/debian/copyright b/Maintenance/deb/sid/debian/copyright
index 269a926c941..d3c80fc067f 100644
--- a/Maintenance/deb/sid/debian/copyright
+++ b/Maintenance/deb/sid/debian/copyright
@@ -1,7 +1,7 @@
 This package was debianized by Joachim Reichel <reichel@debian.org> on
 Thu, 29 Apr 2004 18:43:18 +0200.
 
-It was downloaded from http://www.cgal.org/download/index.html.
+It was downloaded from https://www.cgal.org/download/index.html.
 
 The Debian packaging is Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009,
 2010, 2011, 2012 Joachim Reichel <reichel@debian.org> and is licensed
@@ -176,7 +176,7 @@ Copyright (from upstream file LICENSE)
    exact license text can be found in the file LICENSE.FREE_USE.
 
    More information on the CGAL license can be found at
-   http://www.cgal.org/license.html
+   https://www.cgal.org/license.html
 
 
 
diff --git a/Maintenance/deb/squeeze/debian/README.Debian b/Maintenance/deb/squeeze/debian/README.Debian
index 5f53b66bd9e..4be997664d7 100644
--- a/Maintenance/deb/squeeze/debian/README.Debian
+++ b/Maintenance/deb/squeeze/debian/README.Debian
@@ -1,7 +1,7 @@
 README.Debian
 -------------
 
-The homepage of CGAL (http://www.cgal.org/) offers more information about CGAL.
+The homepage of CGAL (https://www.cgal.org/) offers more information about CGAL.
 In particular, a mailing list and the documentation for the library (in PDF and
 HTML) are available. The authors ask you to give some feedback about your usage
 of CGAL in a short questionnaire (in the download section).
@@ -12,7 +12,7 @@ Documentation
 
 Note that the CGAL documentation cannot be packaged for Debian due to unclear
 license conditions. The complete documentation in PDF and HTML is available at
-http://www.cgal.org/.
+https://www.cgal.org/.
 
 
 Demos and examples
diff --git a/Maintenance/deb/squeeze/debian/control b/Maintenance/deb/squeeze/debian/control
index fd3b0418b93..f2b2dc2a29f 100644
--- a/Maintenance/deb/squeeze/debian/control
+++ b/Maintenance/deb/squeeze/debian/control
@@ -8,7 +8,7 @@ Build-Depends: debhelper (>= 8), dpkg-awk, cmake, zlib1g-dev, libboost-dev,
  libipe-dev (>= 7), ipe
 Standards-Version: 3.9.1
 Section: libs
-Homepage: http://www.cgal.org/
+Homepage: https://www.cgal.org/
 XS-Autobuild: yes
 
 Package: libcgal10
diff --git a/Maintenance/deb/squeeze/debian/copyright b/Maintenance/deb/squeeze/debian/copyright
index 269a926c941..d3c80fc067f 100644
--- a/Maintenance/deb/squeeze/debian/copyright
+++ b/Maintenance/deb/squeeze/debian/copyright
@@ -1,7 +1,7 @@
 This package was debianized by Joachim Reichel <reichel@debian.org> on
 Thu, 29 Apr 2004 18:43:18 +0200.
 
-It was downloaded from http://www.cgal.org/download/index.html.
+It was downloaded from https://www.cgal.org/download/index.html.
 
 The Debian packaging is Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009,
 2010, 2011, 2012 Joachim Reichel <reichel@debian.org> and is licensed
@@ -176,7 +176,7 @@ Copyright (from upstream file LICENSE)
    exact license text can be found in the file LICENSE.FREE_USE.
 
    More information on the CGAL license can be found at
-   http://www.cgal.org/license.html
+   https://www.cgal.org/license.html
 
 
 
diff --git a/Maintenance/deb/wheezy/debian/README.Debian b/Maintenance/deb/wheezy/debian/README.Debian
index 5f53b66bd9e..4be997664d7 100644
--- a/Maintenance/deb/wheezy/debian/README.Debian
+++ b/Maintenance/deb/wheezy/debian/README.Debian
@@ -1,7 +1,7 @@
 README.Debian
 -------------
 
-The homepage of CGAL (http://www.cgal.org/) offers more information about CGAL.
+The homepage of CGAL (https://www.cgal.org/) offers more information about CGAL.
 In particular, a mailing list and the documentation for the library (in PDF and
 HTML) are available. The authors ask you to give some feedback about your usage
 of CGAL in a short questionnaire (in the download section).
@@ -12,7 +12,7 @@ Documentation
 
 Note that the CGAL documentation cannot be packaged for Debian due to unclear
 license conditions. The complete documentation in PDF and HTML is available at
-http://www.cgal.org/.
+https://www.cgal.org/.
 
 
 Demos and examples
diff --git a/Maintenance/deb/wheezy/debian/control b/Maintenance/deb/wheezy/debian/control
index e871f4f1eb1..865bd762a15 100644
--- a/Maintenance/deb/wheezy/debian/control
+++ b/Maintenance/deb/wheezy/debian/control
@@ -8,7 +8,7 @@ Build-Depends: debhelper (>= 9), dpkg-awk, cmake, zlib1g-dev, libboost-dev,
  libipe-dev (>= 7), ipe
 Standards-Version: 3.9.3
 Section: libs
-Homepage: http://www.cgal.org/
+Homepage: https://www.cgal.org/
 XS-Autobuild: yes
 
 Package: libcgal10
diff --git a/Maintenance/deb/wheezy/debian/copyright b/Maintenance/deb/wheezy/debian/copyright
index 269a926c941..d3c80fc067f 100644
--- a/Maintenance/deb/wheezy/debian/copyright
+++ b/Maintenance/deb/wheezy/debian/copyright
@@ -1,7 +1,7 @@
 This package was debianized by Joachim Reichel <reichel@debian.org> on
 Thu, 29 Apr 2004 18:43:18 +0200.
 
-It was downloaded from http://www.cgal.org/download/index.html.
+It was downloaded from https://www.cgal.org/download/index.html.
 
 The Debian packaging is Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009,
 2010, 2011, 2012 Joachim Reichel <reichel@debian.org> and is licensed
@@ -176,7 +176,7 @@ Copyright (from upstream file LICENSE)
    exact license text can be found in the file LICENSE.FREE_USE.
 
    More information on the CGAL license can be found at
-   http://www.cgal.org/license.html
+   https://www.cgal.org/license.html
 
 
 
diff --git a/Maintenance/infrastructure/cgal.geometryfactory.com/crontab b/Maintenance/infrastructure/cgal.geometryfactory.com/crontab
index e5d0154a1ea..e3f6380c10f 100644
--- a/Maintenance/infrastructure/cgal.geometryfactory.com/crontab
+++ b/Maintenance/infrastructure/cgal.geometryfactory.com/crontab
@@ -87,7 +87,7 @@ LC_CTYPE=en_US.UTF-8
 #  - on trunk
 #0 21  *  *  Sat                        cd $HOME/CGAL/create_internal_release; $HOME/bin/create_release $HOME/CGAL/trunk --public --do-it
 
-# Check the links of http://www.cgal.org/projects.html every sunday at 17:42
+# Check the links of https://www.cgal.org/projects.html every sunday at 17:42
 #42 17 * * Sun   linklint -host www.cgal.org -http /projects.html -net -no_anchors -quiet -silent -error
 
 # A test that does not work
diff --git a/Maintenance/infrastructure/doc.cgal.org/htaccess b/Maintenance/infrastructure/doc.cgal.org/htaccess
index a232cb671a8..067eba7cd8a 100644
--- a/Maintenance/infrastructure/doc.cgal.org/htaccess
+++ b/Maintenance/infrastructure/doc.cgal.org/htaccess
@@ -1,6 +1,6 @@
 Options +FollowSymLinks
 <IfModule mod_alias.c>
-	RedirectMatch permanent /$ http://doc.cgal.org/4.2/CGAL.CGAL/html/index.html
+	RedirectMatch permanent /$ https://doc.cgal.org/4.2/CGAL.CGAL/html/index.html
 </IfModule>
 
 <IfModule mod_expires.c>
diff --git a/Maintenance/public_release/announcement/mailing-beta.eml b/Maintenance/public_release/announcement/mailing-beta.eml
index 31eb8da8bfd..282ea4de4ad 100644
--- a/Maintenance/public_release/announcement/mailing-beta.eml
+++ b/Maintenance/public_release/announcement/mailing-beta.eml
@@ -54,7 +54,7 @@ Kinetic Data Structures (removed package)
     earlier.
 
 
-See http://www.cgal.org/2018/02/27/cgal412-beta1/ for a complete list of
+See https://www.cgal.org/2018/02/27/cgal412-beta1/ for a complete list of
 changes.
 
 
@@ -95,4 +95,4 @@ GeometryFactory (http://www.geometryfactory.com/).
 
 
 For further information and for downloading the library and its
-documentation, please visit the CGAL web site: http://www.cgal.org/
+documentation, please visit the CGAL web site: https://www.cgal.org/
diff --git a/Maintenance/public_release/announcement/mailing.eml b/Maintenance/public_release/announcement/mailing.eml
index d3235b9c6a2..bfec2b550fc 100644
--- a/Maintenance/public_release/announcement/mailing.eml
+++ b/Maintenance/public_release/announcement/mailing.eml
@@ -95,7 +95,7 @@ has changed since CGAL 4.10:
     and Advancing_front_mesher.
 
 
-See http://www.cgal.org/2017/09/21/cgal411/ for a complete list of
+See https://www.cgal.org/2017/09/21/cgal411/ for a complete list of
 changes.
 
 
@@ -136,4 +136,4 @@ GeometryFactory (http://www.geometryfactory.com/).
 
 
 For further information and for downloading the library and its
-documentation, please visit the CGAL web site: http://www.cgal.org/
+documentation, please visit the CGAL web site: https://www.cgal.org/
diff --git a/Mesh_2/test/Mesh_2/test_dependencies.h b/Mesh_2/test/Mesh_2/test_dependencies.h
index bc47d3af773..bcd85b04893 100644
--- a/Mesh_2/test/Mesh_2/test_dependencies.h
+++ b/Mesh_2/test/Mesh_2/test_dependencies.h
@@ -1,5 +1,5 @@
 // For the license check mechanism see:
-// http://doc.cgal.org/latest/Manual/preliminaries.html#title5
+// https://doc.cgal.org/latest/Manual/preliminaries.html#title5
 
 // This package depends on the following packages
 
diff --git a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/documentation/introduction.html b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/documentation/introduction.html
index 8660509a40f..23eefb55810 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/documentation/introduction.html
+++ b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/documentation/introduction.html
@@ -16,7 +16,7 @@
 
         <p>
         For more information see the
-        <a href="http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Periodic_3_triangulation_3/Chapter_main.html">CGAL Periodic Triangulation
+        <a href="https://www.cgal.org/Manual/latest/doc_html/cgal_manual/Periodic_3_triangulation_3/Chapter_main.html">CGAL Periodic Triangulation
         package manual</a>.
         </p>
 
diff --git a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about.html b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about.html
index d3104976dff..bf9e3becae7 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about.html
+++ b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about.html
@@ -4,9 +4,9 @@
     <p>Copyright &copy;2008-2009<br>
       <a href="http://www-sop.inria.fr/">INRIA Sophia Antipolis - Mediterranee<a/></p>
     <p>This application illustrates the 3D Periodic Delaunay Triangulation 
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
     <p>See also the package manual:<br>
-      <a href="http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Periodic_3_triangulation_3/Chapter_main.html">
+      <a href="https://www.cgal.org/Manual/latest/doc_html/cgal_manual/Periodic_3_triangulation_3/Chapter_main.html">
             3D Periodic Triangulations</a>
     </p>
   </body>
diff --git a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about_CGAL.html b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about_CGAL.html
index b8a610ce41e..2bf0676c9d6 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about_CGAL.html
+++ b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/resources/about_CGAL.html
@@ -2,6 +2,6 @@
   <body>
     <h2>Computational Geometry Algorithms Library</h2>
     <p>CGAL provides efficient and reliable geometric algorithms in the form of a C++ library.</p>
-    <p>For more information visit <a href="http://www.cgal.org/">www.cgal.org</a>.</p>
+    <p>For more information visit <a href="https://www.cgal.org/">www.cgal.org</a>.</p>
   </body>
 </html>
diff --git a/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_CGAL.html b/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_CGAL.html
index b8a610ce41e..2bf0676c9d6 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_CGAL.html
+++ b/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_CGAL.html
@@ -2,6 +2,6 @@
   <body>
     <h2>Computational Geometry Algorithms Library</h2>
     <p>CGAL provides efficient and reliable geometric algorithms in the form of a C++ library.</p>
-    <p>For more information visit <a href="http://www.cgal.org/">www.cgal.org</a>.</p>
+    <p>For more information visit <a href="https://www.cgal.org/">www.cgal.org</a>.</p>
   </body>
 </html>
diff --git a/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_Periodic_Lloyd_3.html b/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_Periodic_Lloyd_3.html
index ea89d0a5451..c0e52658ed2 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_Periodic_Lloyd_3.html
+++ b/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/about_Periodic_Lloyd_3.html
@@ -3,6 +3,6 @@
     <h2>3D Periodic Lloyd</h2>
     <p>Copyright &copy; 2009 INRIA</p>
     <p>This application illustrates the Lloyd algorithm in 3D periodic space
-      using <a href="http://www.cgal.org/">CGAL</a>.</p>
+      using <a href="https://www.cgal.org/">CGAL</a>.</p>
   </body>
 </html>
diff --git a/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/documentation/introduction.html b/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/documentation/introduction.html
index 6a3cf0da13e..40b27e67085 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/documentation/introduction.html
+++ b/Periodic_3_triangulation_3/demo/Periodic_Lloyd_3/documentation/introduction.html
@@ -21,7 +21,7 @@
 
         <p>
         For more information on 3D periodic triangulations see the
-        <a href="http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Periodic_3_triangulation_3/Chapter_main.html">CGAL Periodic Triangulation
+        <a href="https://www.cgal.org/Manual/latest/doc_html/cgal_manual/Periodic_3_triangulation_3/Chapter_main.html">CGAL Periodic Triangulation
         package manual</a>.
         </p>
 
diff --git a/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Meshing_dialog.ui b/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Meshing_dialog.ui
index 0ea556a97eb..56e918bf8b8 100644
--- a/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Meshing_dialog.ui
+++ b/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Meshing_dialog.ui
@@ -311,7 +311,7 @@
          <item>
           <widget class="QLabel" name="facetTopologyLabel">
            <property name="text">
-            <string>The following option enables the &lt;a href=&quot;http://doc.cgal.org/latest/Mesh_3/group__PkgMesh__3Enum.html#gaac682a581ddebf8daff681621911d1f3&quot;&gt; &lt;code&gt;FACET_VERTICES_ON_SAME_SURFACE_PATCH_WITH_ADJACENCY_CHECK &lt;/code&gt;&lt;/a&gt; facet topology criterion (click on the link to see the manual page).</string>
+            <string>The following option enables the &lt;a href=&quot;https://doc.cgal.org/latest/Mesh_3/group__PkgMesh__3Enum.html#gaac682a581ddebf8daff681621911d1f3&quot;&gt; &lt;code&gt;FACET_VERTICES_ON_SAME_SURFACE_PATCH_WITH_ADJACENCY_CHECK &lt;/code&gt;&lt;/a&gt; facet topology criterion (click on the link to see the manual page).</string>
            </property>
            <property name="wordWrap">
             <bool>true</bool>
diff --git a/Polyhedron/demo/Polyhedron/resources/about.html b/Polyhedron/demo/Polyhedron/resources/about.html
index 46f08d526ea..3089144f7a1 100644
--- a/Polyhedron/demo/Polyhedron/resources/about.html
+++ b/Polyhedron/demo/Polyhedron/resources/about.html
@@ -5,7 +5,7 @@
       <a href="http://www.geometryfactory.com/">GeometryFactory</a>
       and <a href="http://www-sop.inria.fr/">INRIA Sophia Antipolis - Mediterranee<a/></p>
     <p>This application illustrates the data structures
-      of <a href="http://www.cgal.org/">CGAL</a>, and operations and
+      of <a href="https://www.cgal.org/">CGAL</a>, and operations and
       algorithms that can be applied to.</p>
   </body>
 </html>
diff --git a/Polyline_simplification_2/demo/Polyline_simplification_2/about_Polyline_simplification_2.html b/Polyline_simplification_2/demo/Polyline_simplification_2/about_Polyline_simplification_2.html
index 84243e92931..05802a6c7e8 100644
--- a/Polyline_simplification_2/demo/Polyline_simplification_2/about_Polyline_simplification_2.html
+++ b/Polyline_simplification_2/demo/Polyline_simplification_2/about_Polyline_simplification_2.html
@@ -3,8 +3,8 @@
     <h2>Polyline Simplification</h2>
     <p>Copyright &copy; 2014 GeometryFactory</p>
     <p>This application illustrates the 2D polyline simplification
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
-    <p>See also <a href="http://www.cgal.org/Pkg/PolylineSimplification2">the online
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
+    <p>See also <a href="https://www.cgal.org/Pkg/PolylineSimplification2">the online
         manual</a>.</p>
   </body>
 </html>
diff --git a/Principal_component_analysis/demo/Principal_component_analysis/resources/about.html b/Principal_component_analysis/demo/Principal_component_analysis/resources/about.html
index 7e4e51c5c91..8d2c41d1ea0 100644
--- a/Principal_component_analysis/demo/Principal_component_analysis/resources/about.html
+++ b/Principal_component_analysis/demo/Principal_component_analysis/resources/about.html
@@ -4,11 +4,11 @@
     <p>Copyright &copy;2009
       <a href="http://www-sop.inria.fr/">INRIA Sophia Antipolis - Mediterranee<a/></p>
     <p>This application illustrates the AABB tree component 
-      of <a href="http://www.cgal.org/">CGAL</a>, applied to polyhedron
+      of <a href="https://www.cgal.org/">CGAL</a>, applied to polyhedron
       facets and edges.</p>
     <p>See also the following chapters of the manual:
       <ul>
-        <li><a href="http://www.cgal.org/Pkg/Polyhedron">
+        <li><a href="https://www.cgal.org/Pkg/Polyhedron">
             3D Polyhedral Surface</a>,
         </li>
       </ul>
diff --git a/STL_Extension/include/CGAL/assertions_impl.h b/STL_Extension/include/CGAL/assertions_impl.h
index bfa94b3a9d8..94639ef2d4b 100644
--- a/STL_Extension/include/CGAL/assertions_impl.h
+++ b/STL_Extension/include/CGAL/assertions_impl.h
@@ -90,7 +90,7 @@ _standard_error_handler(
          << "File       : " << file << std::endl
          << "Line       : " << line << std::endl
          << "Explanation: " << msg << std::endl
-         << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html"
+         << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html"
 	 << std::endl;
 }
 
@@ -115,7 +115,7 @@ _standard_warning_handler( const char *,
          << "File       : " << file << std::endl
          << "Line       : " << line << std::endl
          << "Explanation: " << msg << std::endl
-         << "Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html"
+         << "Refer to the bug-reporting instructions at https://www.cgal.org/bug_report.html"
 	 << std::endl;
 }
 
diff --git a/Triangulation_3/demo/Triangulation_3/documentation/about.html b/Triangulation_3/demo/Triangulation_3/documentation/about.html
index 4149acaf9d5..1954aa1d7fa 100644
--- a/Triangulation_3/demo/Triangulation_3/documentation/about.html
+++ b/Triangulation_3/demo/Triangulation_3/documentation/about.html
@@ -4,9 +4,9 @@
     <p>Copyright &copy;2010-2011<br>
       <a href="http://www-sop.inria.fr/">INRIA Sophia Antipolis - Mediterranee<a/></p>
     <p>This application illustrates an interactive demo for 3D Delaunay Triangulation package
-      of <a href="http://www.cgal.org/">CGAL</a>.</p>
+      of <a href="https://www.cgal.org/">CGAL</a>.</p>
     <p>See also the package manual:<br>
-      <a href="http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Triangulation_3/Chapter_main.html">
+      <a href="https://www.cgal.org/Manual/latest/doc_html/cgal_manual/Triangulation_3/Chapter_main.html">
             3D Triangulations</a>
     </p>
   </body>
diff --git a/Triangulation_3/demo/Triangulation_3/documentation/about_CGAL.html b/Triangulation_3/demo/Triangulation_3/documentation/about_CGAL.html
index b8a610ce41e..2bf0676c9d6 100644
--- a/Triangulation_3/demo/Triangulation_3/documentation/about_CGAL.html
+++ b/Triangulation_3/demo/Triangulation_3/documentation/about_CGAL.html
@@ -2,6 +2,6 @@
   <body>
     <h2>Computational Geometry Algorithms Library</h2>
     <p>CGAL provides efficient and reliable geometric algorithms in the form of a C++ library.</p>
-    <p>For more information visit <a href="http://www.cgal.org/">www.cgal.org</a>.</p>
+    <p>For more information visit <a href="https://www.cgal.org/">www.cgal.org</a>.</p>
   </body>
 </html>
diff --git a/Triangulation_3/demo/Triangulation_3/icons/about_CGAL.html b/Triangulation_3/demo/Triangulation_3/icons/about_CGAL.html
index d87503a3469..123ca126aba 100644
--- a/Triangulation_3/demo/Triangulation_3/icons/about_CGAL.html
+++ b/Triangulation_3/demo/Triangulation_3/icons/about_CGAL.html
@@ -3,6 +3,6 @@
     <p><img src=":/cgal/logos/CGAL.gif"></p>
     <h2>Computational Geometry Algorithms Library<!--CGAL_VERSION--></h2>
     <p>CGAL provides efficient and reliable geometric algorithms in the form of a C++ library.</p>
-    <p>For more information visit <a href="http://www.cgal.org/">www.cgal.org</a></p>
+    <p>For more information visit <a href="https://www.cgal.org/">www.cgal.org</a></p>
   </body>
 </html>
diff --git a/Triangulation_3/test/Triangulation_3/test_dependencies.h b/Triangulation_3/test/Triangulation_3/test_dependencies.h
index 9bbb8f53e98..3ff8a72d2ff 100644
--- a/Triangulation_3/test/Triangulation_3/test_dependencies.h
+++ b/Triangulation_3/test/Triangulation_3/test_dependencies.h
@@ -1,5 +1,5 @@
 // For the license check mechanism see:
-// http://doc.cgal.org/latest/Manual/preliminaries.html#title5
+// https://doc.cgal.org/latest/Manual/preliminaries.html#title5
 
 // This package depends on the following packages
 
diff --git a/wininst/developer_scripts/script_cgal.nsi b/wininst/developer_scripts/script_cgal.nsi
index fb836eaf0c6..b58bdffafc7 100644
--- a/wininst/developer_scripts/script_cgal.nsi
+++ b/wininst/developer_scripts/script_cgal.nsi
@@ -101,7 +101,7 @@
 
   !define MUI_FINISHPAGE_LINK "Installation instructions"
   
-  !define MUI_FINISHPAGE_LINK_LOCATION "http://www.cgal.org/download/windows.html"
+  !define MUI_FINISHPAGE_LINK_LOCATION "https://www.cgal.org/download/windows.html"
   
 ;--------------------------------
 ; Pages
@@ -195,7 +195,7 @@ Section "!Main CGAL" MAIN_Idx
   WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${CGAL_SRC}" \
                    "Publisher" "The CGAL Project and GeometryFactory"
   WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${CGAL_SRC}" \
-                   "URLInfoAbout" "http://www.cgal.org/"
+                   "URLInfoAbout" "https://www.cgal.org/"
   WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${CGAL_SRC}" \
                    "DisplayedVersion" "4.8.0"
   WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${CGAL_SRC}" \