diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,7 +21,7 @@
 #
 # Note that if(\$ENV{DESTDIR}) always fails, regardless of the value of the DESTDIR
 # environment variable, hence the STREQUAL test.
-# See http://public.kitware.com/Bug/view.php?id=14737
+# See https://public.kitware.com/Bug/view.php?id=14737
 install(CODE
     "set(_root_arg)
      if (NOT \$ENV{DESTDIR} STREQUAL \"\")
diff --git a/docs/metainfo_syntax.md b/docs/metainfo_syntax.md
--- a/docs/metainfo_syntax.md
+++ b/docs/metainfo_syntax.md
@@ -53,7 +53,7 @@
   description: Providing everything from simple utility classes to ..
   logo: relative/path/to/logo.png
   long_description: # optional, one item per paragraph, html authorized
-    - The KDE Frameworks build on the <a href="http://www.qt.io">Qt
+    - The KDE Frameworks build on the <a href="https://www.qt.io">Qt
       framework</a>, providing everything from simple utility classes (such as
       those in KCoreAddons) to integrated solutions for common requirements of
       desktop applications (such as KNewStuff, for fetching downloadable add-on
diff --git a/src/kapidox/argparserutils.py b/src/kapidox/argparserutils.py
--- a/src/kapidox/argparserutils.py
+++ b/src/kapidox/argparserutils.py
@@ -59,7 +59,7 @@
     if args.depdiagram_dot_dir and not depdiagram_available:
         logging.error('You need to install the Graphviz Python bindings to '
                       'generate dependency diagrams.\n'
-                      'See <http://www.graphviz.org/Download.php>.')
+                      'See <https://www.graphviz.org/download/>.')
         exit(1)
 
     if not os.path.isdir(args.sourcesdir):
diff --git a/src/kapidox/data/Doxyfile.global b/src/kapidox/data/Doxyfile.global
--- a/src/kapidox/data/Doxyfile.global
+++ b/src/kapidox/data/Doxyfile.global
@@ -1,5 +1,5 @@
 # Default settings for KDE projects
-# See http://www.stack.nl/~dimitri/doxygen/manual/config.html for help
+# See http://www.doxygen.nl/manual/config.html for help
 
 QUIET = YES
 
@@ -31,13 +31,13 @@
                          "FIXME=\xrefitem fixme \"Fixme\" \"Fixme\"" \
                          "bc=\xrefitem bc \"Binary Compatible\" \"Binary Compatible\"" \
                          "threadsafe=\xrefitem threadsafe \"Threadsafe\" \"Threadsafe\"" \
-                         "artistic=<a href=\"http://www.opensource.org/licenses/artistic-license.php\">Artistic</a>" \
-                         "bsd=<a href=\"http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5\">BSD</a>" \
-                         "x11=<a href=\"http://www.xfree86.org/3.3.6/COPYRIGHT2.html#3\">X11</a>" \
-                         "gpl=<a href=\"http://www.gnu.org/licenses/old-licenses/gpl-2.0.html#SEC1\">GPLv2</a>" \
-                         "lgpl=<a href=\"http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html#SEC1\">LGPLv2</a>" \
-                         "mit=<a href=\"http://www.opensource.org/licenses/mit-license.php\">MIT</a>" \
-                         "qpl=<a href=\"http://doc.trolltech.com/3.0/license.html\">QPL</a>"
+                         "artistic=<a href=\"https://www.opensource.org/licenses/artistic-license.php\">Artistic</a>" \
+                         "bsd=<a href=\"https://www.xfree86.org/3.3.6/COPYRIGHT2.html#5\">BSD</a>" \
+                         "x11=<a href=\"https://www.xfree86.org/3.3.6/COPYRIGHT2.html#3\">X11</a>" \
+                         "gpl=<a href=\"https://www.gnu.org/licenses/old-licenses/gpl-2.0.html#SEC1\">GPLv2</a>" \
+                         "lgpl=<a href=\"https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html#SEC1\">LGPLv2</a>" \
+                         "mit=<a href=\"https://www.opensource.org/licenses/mit-license.php\">MIT</a>" \
+                         "qpl=<a href=\"https://opensource.org/licenses/QPL-1.0\">QPL</a>"
 
 
 
diff --git a/src/kapidox/data/htmlresource/kde.css b/src/kapidox/data/htmlresource/kde.css
--- a/src/kapidox/data/htmlresource/kde.css
+++ b/src/kapidox/data/htmlresource/kde.css
@@ -2,7 +2,7 @@
 ** HTML elements
 */
 body {
-    background:  url("http://cdn.kde.org/img/bg.png") repeat;
+    background:  url("https://cdn.kde.org/img/bg.png") repeat;
     margin: 0px;
 }
 
diff --git a/src/kapidox/data/templates/base.html b/src/kapidox/data/templates/base.html
--- a/src/kapidox/data/templates/base.html
+++ b/src/kapidox/data/templates/base.html
@@ -15,7 +15,7 @@
 
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <meta http-equiv="Content-Style-Type" content="text/css" />
-    <link rel="meta" href="http://www.kde.org/labels.rdf" type="application/rdf+xml" title="ICRA labels" />
+    <link rel="meta" href="https://www.kde.org/labels.rdf" type="application/rdf+xml" title="ICRA labels" />
     <meta name="trademark" content="KDE e.V." />
     <meta name="description" content="KDE products API documentation" />
     <meta name="MSSmartTagsPreventParsing" content="true" />
@@ -67,8 +67,8 @@
       </ol>
 
         <ul class="nav navbar-nav navbar-right">
-          <li><a href="http://www.kde.org/">KDE Home</a></li>
-          <li><a href="http://kde.org/contact/">Contact Us</a></li>
+          <li><a href="https://www.kde.org/">KDE Home</a></li>
+          <li><a href="https://kde.org/contact/">Contact Us</a></li>
         </ul>
       </div>
     </div>
diff --git a/src/kapidox/data/templates/footer.html b/src/kapidox/data/templates/footer.html
--- a/src/kapidox/data/templates/footer.html
+++ b/src/kapidox/data/templates/footer.html
@@ -1,3 +1,3 @@
 <p>Report problems with this website to <a href="https://go.kde.org/u/systickets">our bug tracking system</a>.<br />
 Contact the specific authors with questions and comments about the page contents.<p>
-<p>KDE<sup>&#174;</sup> and <a href="/media/images/kde_gear_black.png">the K Desktop Environment<sup>&#174;</sup> logo</a> are registered trademarks of <a href="http://ev.kde.org/" title="Homepage of the KDE non-profit Organization">KDE e.V.</a> | <a href="http://www.kde.org/contact/impressum.php">Legal</a></p>
+<p>KDE<sup>&#174;</sup> and <a href="/media/images/kde_gear_black.png">the K Desktop Environment<sup>&#174;</sup> logo</a> are registered trademarks of <a href="https://ev.kde.org/" title="Homepage of the KDE non-profit Organization">KDE e.V.</a> | <a href="https://www.kde.org/contact/impressum.php">Legal</a></p>
diff --git a/src/kapidox/data/templates/library.html b/src/kapidox/data/templates/library.html
--- a/src/kapidox/data/templates/library.html
+++ b/src/kapidox/data/templates/library.html
@@ -6,7 +6,7 @@
 
 {% if classname %}
 <ul class="additional_info">
-  <li><a href="http://lxr.kde.org/ident?v=kf5-qt5&amp;_i={{ classname }}">View on LXR</a></li>
+  <li><a href="https://lxr.kde.org/ident?v=kf5-qt5&amp;_i={{ classname }}">View on LXR</a></li>
 </ul>
 {% endif %}
 
@@ -19,7 +19,7 @@
   <a href="http://www.doxygen.org/">doxygen</a> {{ dox.doxygenversion }} written
   by <a href="mailto:dimitri@stack.nl">Dimitri van Heesch</a>, &copy;&nbsp;1997-2006
   <p>
-  KDE's <a href="http://community.kde.org/Policies/Library_Documentation_Policy">Doxygen guidelines</a> are available online.
+  KDE's <a href="https://community.kde.org/Frameworks/Frameworks_Documentation_Policy">Doxygen guidelines</a> are available online.
   </p>
 </div>