diff --git a/invidious/README.md b/invidious/README.md
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+++ b/invidious/README.md
@@ -0,0 +1,4 @@
+invidious Addon for Friendica
+==========================
+
+This addon will replace "youtube.com" with the chosen Invidious instance
diff --git a/invidious/invidious.php b/invidious/invidious.php
new file mode 100644
index 00000000..7692229d
--- /dev/null
+++ b/invidious/invidious.php
@@ -0,0 +1,57 @@
+<?php
+/*
+ * Name: invidious
+ * Description: Replaces links to youtube.com to an invidious instance in all displays of postings on a node.
+ * Version: 0.2
+ * Author: Matthias Ebers <https://loma.ml/profile/feb>
+ *
+ */
+
+use Friendica\App;
+use Friendica\Core\Hook;
+use Friendica\Core\Renderer;
+use Friendica\DI;
+
+function invidious_install()
+{
+    Hook::register('prepare_body_final', 'addon/invidious/invidious.php', 'invidious_render');
+}
+
+/* Handle the send data from the admin settings
+ */
+function invidious_addon_admin_post()
+{
+    DI::config()->set('invidious', 'server', rtrim(trim($_POST['invidiousserver']), '/'));
+}
+
+/* Hook into the admin settings to let the admin choose an
+ * invidious server to use for the replacement.
+ */
+function invidious_addon_admin(string &$o)
+{
+    $invidiousserver = DI::config()->get('invidious', 'server');
+    $t = Renderer::getMarkupTemplate('admin.tpl', 'addon/invidious/');
+    $o = Renderer::replaceMacros($t, [
+        '$settingdescription' => DI::l10n()->t('Which Invidious server shall be used for the replacements in the post bodies? Use the URL with servername and protocol. See %s for a list of available public Invidious servers.', 'https://redirect.invidious.io'),
+        '$invidiousserver' => ['invidiousserver', DI::l10n()->t('Invidious server'), $invidiousserver, 'https://example.com'],
+        '$submit' => DI::l10n()->t('Save Settings'),
+    ]);
+}
+
+/*
+ *  replace "youtube.com" with the chosen Invidious instance
+ */
+function invidious_render(array &$b)
+{
+    // this needs to be a system setting
+    $replaced = false;
+    $invidious = DI::config()->get('invidious', 'server', 'https://invidio.us');
+    if (strpos($b['html'], 'https://www.youtube.com/') !== false || strpos($b['html'], 'https://youtube.com/') !== false || strpos($b['html'], 'https://youtu.be/') !== false) {
+        $b['html'] = str_replace('https://youtu.be/', $invidious . '/watch?v=', $b['html']);
+        $b['html'] = str_replace(['https://www.youtube.com/', 'https://youtube.com/'], $invidious . '/', $b['html']);
+        $replaced = true;
+    }
+    if ($replaced) {
+        $b['html'] .= '<hr><p><small>' . DI::l10n()->t('(Invidious addon enabled: YouTube links via %s)', $invidious) . '</small></p>';
+    }
+}
diff --git a/invidious/lang/C/messages.po b/invidious/lang/C/messages.po
new file mode 100644
index 00000000..f93a87d6
--- /dev/null
+++ b/invidious/lang/C/messages.po
@@ -0,0 +1,40 @@
+ # ADDON invidious
+# Copyright (C) 
+# This file is distributed under the same license as the Friendica invidious addon package.
+# 
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2023-12-03 20:21+0100\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: invidious.php:35
+#, php-format
+msgid ""
+"Which Invidious server shall be used for the replacements in the post "
+"bodies? Use the URL with servername and protocol. See %s for a list of "
+"available public Invidious servers."
+msgstr ""
+
+#: invidious.php:36
+msgid "Invidious server"
+msgstr ""
+
+#: invidious.php:37
+msgid "Save Settings"
+msgstr ""
+
+#: invidious.php:64
+#, php-format
+msgid "(Invidious addon enabled: YouTube links via %s)"
+msgstr ""
+
diff --git a/invidious/templates/admin.tpl b/invidious/templates/admin.tpl
new file mode 100644
index 00000000..1db85ff9
--- /dev/null
+++ b/invidious/templates/admin.tpl
@@ -0,0 +1,5 @@
+<p>{{$settingdescription}}</p>
+
+{{include file="field_input.tpl" field=$invidiousserver}}
+
+<div class="submit"><input type="submit" name="page_site" value="{{$submit}}" /></div>
diff --git a/pageheader/pageheader.css b/pageheader/pageheader.css
index 8b3282fb..f6c28fbf 100644
--- a/pageheader/pageheader.css
+++ b/pageheader/pageheader.css
@@ -20,4 +20,9 @@
 	width: 100%;
 	margin-top: 25px;
 	font-size: 20px;
+	/* The pageheader box */
+	padding: 20px;
+	border: 1px solid transparent;
+	border-radius: 2px;
+	margin-bottom: 15px;
 }