diff --git a/src/aboutdata.cpp b/src/aboutdata.cpp
--- a/src/aboutdata.cpp
+++ b/src/aboutdata.cpp
@@ -35,7 +35,7 @@
                      VERSION, i18n(description), KAboutLicense::GPL_V2,
                      i18n("Copyright © 2003–2007, Sébastien Laoût; Copyright © 2013–2019, Gleb Baryshev"),
                      QString(),
-                     "http://basket.kde.org/")
+                     "https://basket.kde.org/")
 {
     //Pass basket.kde.org to constructor to be used as D-Bus domain name, but set the displayed address below
     setHomepage("https://launchpad.net/basket");
diff --git a/src/formatimporter.cpp b/src/formatimporter.cpp
--- a/src/formatimporter.cpp
+++ b/src/formatimporter.cpp
@@ -130,7 +130,7 @@
         // Move the folder to the new repository (normal basket) or copy the folder (mirrored folder):
         QString folderName = *it;
         if (folderName.startsWith('/')) { // It was a folder mirror:
-            KMessageBox::information(0, i18n("<p>Folder mirroring is not possible anymore (see <a href='http://basket-notepads.github.io'>basket-notepads.github.io</a> for more information).</p>"
+            KMessageBox::information(0, i18n("<p>Folder mirroring is not possible anymore (see <a href='https://basket-notepads.github.io'>basket-notepads.github.io</a> for more information).</p>"
                                              "<p>The folder <b>%1</b> has been copied for the basket needs. You can either delete this folder or delete the basket, or use both. But remember that "
                                              "modifying one will not modify the other anymore as they are now separate entities.</p>", folderName), i18n("Folder Mirror Import"),
                                      "", KMessageBox::AllowLink);
diff --git a/src/likeback.h b/src/likeback.h
--- a/src/likeback.h
+++ b/src/likeback.h
@@ -67,7 +67,7 @@
  *     likeBack->sendACommentAction(actionCollection());
  * @endcode
  *
- * @see Visit http://basket.kde.org/likeback.php for more information, screenshots, a tutorial, hints, return of experiences, and to download the server-side developer interface...
+ * @see Visit https://basket.kde.org/likeback.php for more information, screenshots, a tutorial, hints, return of experiences, and to download the server-side developer interface...
  * @author Sebastien Laout <slaout@linux62.org>
  */
 class LikeBack : public QObject
diff --git a/src/likeback.cpp b/src/likeback.cpp
--- a/src/likeback.cpp
+++ b/src/likeback.cpp
@@ -758,7 +758,7 @@
         // TODO: Replace the URL with a localized one:
         text += languagesMessage + ' ' +
                 i18n("You may be able to use an <a href=\"%1\">online translation tool</a>."
-                     , "http://www.google.com/language_tools?hl=" + QLocale().language()) + ' ';
+                     , "https://www.google.com/language_tools?hl=" + QLocale().language()) + ' ';
 
     // If both "I Like" and "I Dislike" buttons are shown and one is clicked:
     if ((m_likeBack->buttons() & LikeBack::Like) && (m_likeBack->buttons() & LikeBack::Dislike))
@@ -817,12 +817,12 @@
 
     KIO::Integration::AccessManager *http = new KIO::Integration::AccessManager(this);
     QString urlString;
-    urlString = "http://" + m_likeBack->hostName() + ":" + m_likeBack->hostPort() + m_likeBack->remotePath();
+    urlString = "https://" + m_likeBack->hostName() + ":" + m_likeBack->hostPort() + m_likeBack->remotePath();
     QUrl url(urlString);
     QNetworkRequest request(url);
     request.setRawHeader("Content-Type", "application/x-www-form-urlencoded");
 
-    qDebug() << "http://" << m_likeBack->hostName() << ":" << m_likeBack->hostPort() << m_likeBack->remotePath();
+    qDebug() << "https://" << m_likeBack->hostName() << ":" << m_likeBack->hostPort() << m_likeBack->remotePath();
     qDebug() << data;
 
     connect(http, SIGNAL(finished(QNetworkReply*)), this, SLOT(requestFinished(QNetworkReply*)));
diff --git a/src/notedrag.cpp b/src/notedrag.cpp
--- a/src/notedrag.cpp
+++ b/src/notedrag.cpp
@@ -239,7 +239,7 @@
 
         // It's UTF16 (aka UCS2), but with the first two order bytes
         //stream.setEncoding(QTextStream::RawUnicode); // It's UTF16 (aka UCS2), but with the first two order bytes
-        //FIXME: find out if this is really equivalent, as http://doc.trolltech.com/4.5/qtextstream-qt3.html pretends
+        //FIXME: find out if this is really equivalent, as https://doc.qt.io/archives/3.3/qtextstream.html pretends
         stream.setCodec("UTF-16");
 
         stream << xMozUrl;
diff --git a/src/notefactory.cpp b/src/notefactory.cpp
--- a/src/notefactory.cpp
+++ b/src/notefactory.cpp
@@ -898,8 +898,12 @@
         title = title.remove(0, 5); // 5 == QString("file:").length() - 1
     else if (title.startsWith(QLatin1String("http://www.")))
         title = title.remove(0, 11); // 11 == QString("http://www.").length() - 1
+    else if (title.startsWith(QLatin1String("https://www.")))
+        title = title.remove(0, 12); // 12 == QString("https://www.").length() - 1
     else if (title.startsWith(QLatin1String("http://")))
         title = title.remove(0, 7); // 7 == QString("http://").length() - 1
+    else if (title.startsWith(QLatin1String("https://")))
+        title = title.remove(0, 8); // 8 == QString("https://").length() - 1
 
     if (! url.isLocalFile()) {
         if (title.endsWith(QLatin1String("/index.html")) && title.length() > 11)
diff --git a/src/settings.cpp b/src/settings.cpp
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -873,7 +873,7 @@
     m_soundLook       = new LinkLookEditWidget(this, i18n("Conference audio record"),                         "folder-sound",       tabs);
     m_fileLook        = new LinkLookEditWidget(this, i18n("Annual report"),                                   "folder-documents",    tabs);
     m_localLinkLook   = new LinkLookEditWidget(this, i18n("Home folder"),                                     "user-home", tabs);
-    m_networkLinkLook = new LinkLookEditWidget(this, "www.kde.org",             KIO::iconNameForUrl(QUrl("http://www.kde.org")), tabs);
+    m_networkLinkLook = new LinkLookEditWidget(this, "kde.org",             KIO::iconNameForUrl(QUrl("https://kde.org")), tabs);
     m_launcherLook    = new LinkLookEditWidget(this, i18n("Launch %1", QGuiApplication::applicationDisplayName()), "basket",      tabs);
     m_crossReferenceLook=new LinkLookEditWidget(this, i18n("Another basket"), "basket", tabs);
 
@@ -996,7 +996,7 @@
              "<li>Go to the \"Applications\" and then \"Default Applications\" section;</li>"
              "<li>Choose \"Web Browser\", check \"with the following command:\" and enter the name of your Web browser (like \"firefox\" or \"epiphany\").</li>"
              "</ul>"
-             "<p>Now, when you click <i>any</i> link that start with \"http://...\", it will be opened in your Web browser (eg. Mozilla Firefox or Epiphany or...).</p>"
+             "<p>Now, when you click <i>any</i> link that start with \"https://...\", it will be opened in your Web browser (eg. Mozilla Firefox or Epiphany or...).</p>"
              "<p>For more fine-grained configuration (like opening only Web pages in your Web browser), read the second help link.</p>"),
         this);
     hLay->addWidget(hl1);
diff --git a/src/systemtray.cpp b/src/systemtray.cpp
--- a/src/systemtray.cpp
+++ b/src/systemtray.cpp
@@ -113,7 +113,7 @@
         setIconByName("basket");
     else {
         // What pixmap size to use? For example, see how overlay icon is applied:
-        // http://api.kde.org/frameworks-api/frameworks5-apidocs/knotifications/html/kstatusnotifieritem_8cpp_source.html
+        // https://api.kde.org/frameworks-api/frameworks5-apidocs/knotifications/html/kstatusnotifieritem_8cpp_source.html
 
         // Code that comes from JuK:
         QPixmap bgPix = QIcon::fromTheme("basket").pixmap(22);