diff --git a/blockem/blockem.php b/blockem/blockem.php
index 6d93de1dc..e44ac622c 100644
--- a/blockem/blockem.php
+++ b/blockem/blockem.php
@@ -44,7 +44,7 @@ function blockem_addon_settings (App $a, &$s)
 	}
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/blockem/blockem.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/blockem/blockem.css' . '" media="all" />' . "\r\n";
 
 	$words = PConfig::get(local_user(), 'blockem', 'words');
 
@@ -165,7 +165,7 @@ function blockem_conversation_start(App $a, array &$b)
 		$a->data['blockem'] = explode(',', $words);
 	}
 
-	$a->page['htmlhead'] .= <<< EOT
+	DI::page()['htmlhead'] .= <<< EOT
 
 <script>
 function blockemBlock(author) {
diff --git a/blogger/blogger.php b/blogger/blogger.php
index 049ee0777..070a09656 100644
--- a/blogger/blogger.php
+++ b/blogger/blogger.php
@@ -69,7 +69,7 @@ function blogger_settings(App $a, &$s)
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/blogger/blogger.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/blogger/blogger.css' . '" media="all" />' . "\r\n";
 
 	/* Get the current state of our config variables */
 
diff --git a/buffer/buffer.php b/buffer/buffer.php
index 243576344..7f460a551 100644
--- a/buffer/buffer.php
+++ b/buffer/buffer.php
@@ -153,7 +153,7 @@ function buffer_settings(App $a, &$s)
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/buffer/buffer.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/buffer/buffer.css' . '" media="all" />' . "\r\n";
 
 	/* Get the current state of our config variables */
 
diff --git a/curweather/curweather.php b/curweather/curweather.php
index 533c83e01..c515adce6 100644
--- a/curweather/curweather.php
+++ b/curweather/curweather.php
@@ -104,7 +104,7 @@ function curweather_network_mod_init(App $a, &$b)
 		return;
 	}
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/curweather/curweather.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/curweather/curweather.css' . '" media="all" />' . "\r\n";
 
 	// $rpt value is needed for location
 	// $lang will be taken from the browser session to honour user settings
@@ -161,7 +161,7 @@ function curweather_network_mod_init(App $a, &$b)
 		]);
 	}
 
-	$a->page['aside'] = $curweather . $a->page['aside'];
+	DI::page()['aside'] = $curweather . DI::page()['aside'];
 }
 
 function curweather_addon_settings_post(App $a, $post)
diff --git a/diaspora/diaspora.php b/diaspora/diaspora.php
index 06b543995..7393bbb27 100644
--- a/diaspora/diaspora.php
+++ b/diaspora/diaspora.php
@@ -66,7 +66,7 @@ function diaspora_settings(App $a, &$s)
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/diaspora/diaspora.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/diaspora/diaspora.css' . '" media="all" />' . "\r\n";
 
 	/* Get the current state of our config variables */
 
diff --git a/dwpost/dwpost.php b/dwpost/dwpost.php
index 5c13734bb..336c84e6e 100644
--- a/dwpost/dwpost.php
+++ b/dwpost/dwpost.php
@@ -64,7 +64,7 @@ function dwpost_settings(App $a, &$s)
 	}
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/dwpost/dwpost.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/dwpost/dwpost.css' . '" media="all" />' . "\r\n";
 
 	/* Get the current state of our config variables */
 	$enabled = PConfig::get(local_user(), 'dwpost', 'post');
diff --git a/forumdirectory/forumdirectory.php b/forumdirectory/forumdirectory.php
index 16538d791..b5ec0d1cd 100644
--- a/forumdirectory/forumdirectory.php
+++ b/forumdirectory/forumdirectory.php
@@ -42,7 +42,7 @@ function forumdirectory_app_menu(App $a, array &$b)
 function forumdirectory_init(App $a)
 {
 	if (local_user()) {
-		$a->page['aside'] .= Widget::findPeople();
+		DI::page()['aside'] .= Widget::findPeople();
 	}
 }
 
diff --git a/jappixmini/jappixmini.php b/jappixmini/jappixmini.php
index 1a768dea6..ad758167b 100644
--- a/jappixmini/jappixmini.php
+++ b/jappixmini/jappixmini.php
@@ -325,10 +325,10 @@ function jappixmini_settings(App $a, &$s)
 
 	if (!$activate) {
 		// load scripts if not yet activated so that password can be saved
-		$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;g=mini.xml"></script>' . "\r\n";
-		$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;f=presence.js~caps.js~name.js~roster.js"></script>' . "\r\n";
+		DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;g=mini.xml"></script>' . "\r\n";
+		DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;f=presence.js~caps.js~name.js~roster.js"></script>' . "\r\n";
 
-		$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/lib.js"></script>' . "\r\n";
+		DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/lib.js"></script>' . "\r\n";
 	}
 
 	$s .= '<span id="settings_jappixmini_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_jappixmini_expanded\'); openClose(\'settings_jappixmini_inflated\');">';
@@ -387,7 +387,7 @@ function jappixmini_settings(App $a, &$s)
 
 	$s .= '</div>';
 
-	$a->page['htmlhead'] .= "<script type=\"text/javascript\">
+	DI::page()['htmlhead'] .= "<script type=\"text/javascript\">
         function jappixmini_set_password() {
             encrypt = document.getElementById('jappixmini-encrypt').checked;
             password = document.getElementById('jappixmini-password');
@@ -491,10 +491,10 @@ function jappixmini_script(App $a)
 		return;
 	}
 
-	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;g=mini.xml"></script>' . "\r\n";
-	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;f=presence.js~caps.js~name.js~roster.js"></script>' . "\r\n";
+	DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;g=mini.xml"></script>' . "\r\n";
+	DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;f=presence.js~caps.js~name.js~roster.js"></script>' . "\r\n";
 
-	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/lib.js"></script>' . "\r\n";
+	DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/lib.js"></script>' . "\r\n";
 
 	$username = PConfig::get(local_user(), 'jappixmini', 'username');
 	$username = str_replace("'", "\\'", $username);
@@ -557,7 +557,7 @@ function jappixmini_script(App $a)
 	}
 
 	// add javascript to start Jappix Mini
-	$a->page['htmlhead'] .= "<script type=\"text/javascript\">
+	DI::page()['htmlhead'] .= "<script type=\"text/javascript\">
         jQuery(document).ready(function() {
            jappixmini_addon_start('$server', '$username', '$proxy', '$bosh', $encrypt, '$password', $nickname, $contacts_json, '$contacts_hash', $autoapprove, $autosubscribe, $groupchats);
         });
@@ -570,10 +570,10 @@ function jappixmini_login(App $a, &$o)
 {
 	// create client secret on login to be able to encrypt jabber passwords
 	// for setDB and str_sha1, needed by jappixmini_addon_set_client_secret
-	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;f=datastore.js~jsjac.js"></script>' . "\r\n";
+	DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/jappix/php/get.php?t=js&amp;f=datastore.js~jsjac.js"></script>' . "\r\n";
 
 	// for jappixmini_addon_set_client_secret
-	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/lib.js"></script>' . "\r\n";
+	DI::page()['htmlhead'] .= '<script type="text/javascript" src="' . DI::baseUrl()->get() . '/addon/jappixmini/lib.js"></script>' . "\r\n";
 
 	// save hash of password
 	$o = str_replace("<form ", "<form onsubmit=\"jappixmini_addon_set_client_secret(this.elements['id_password'].value);return true;\" ", $o);
diff --git a/js_upload/js_upload.php b/js_upload/js_upload.php
index d0f92127d..b92466a0f 100644
--- a/js_upload/js_upload.php
+++ b/js_upload/js_upload.php
@@ -13,6 +13,7 @@ use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
+use Friendica\DI;
 
 function js_upload_install()
 {
@@ -26,8 +27,8 @@ function js_upload_form(App $a, array &$b)
 {
 	$b['default_upload'] = false;
 
-	$a->page->registerStylesheet('addon/js_upload/file-uploader/client/fileuploader.css');
-	$a->page->registerFooterScript('addon/js_upload/file-uploader/client/fileuploader.js');
+	DI::page()->registerStylesheet('addon/js_upload/file-uploader/client/fileuploader.css');
+	DI::page()->registerFooterScript('addon/js_upload/file-uploader/client/fileuploader.js');
 
 	$tpl = Renderer::getMarkupTemplate('js_upload.tpl', 'addon/js_upload');
 	$b['addon_text'] .= Renderer::replaceMacros($tpl, [
diff --git a/mastodoncustomemojis/mastodoncustomemojis.php b/mastodoncustomemojis/mastodoncustomemojis.php
index c7e9df603..e1c20963b 100644
--- a/mastodoncustomemojis/mastodoncustomemojis.php
+++ b/mastodoncustomemojis/mastodoncustomemojis.php
@@ -15,6 +15,7 @@ use Friendica\Core\Cache;
 use Friendica\Core\Config;
 use Friendica\Core\Hook;
 use Friendica\Core\Protocol;
+use Friendica\DI;
 use Friendica\Util\Network;
 use Friendica\Util\Proxy as ProxyUtils;
 
@@ -40,7 +41,7 @@ function mastodoncustomemojis_uninstall()
 
 function mastodoncustomemojis_css_hook(App $a)
 {
-	$a->page['htmlhead'] .= <<<HTML
+	DI::page()['htmlhead'] .= <<<HTML
 <!-- Style added by mastodoncustomemojis -->
 <style type="text/css">
 	.emoji.mastodon {
diff --git a/pumpio/pumpio.php b/pumpio/pumpio.php
index 7c2149cfe..5b1d2aa00 100644
--- a/pumpio/pumpio.php
+++ b/pumpio/pumpio.php
@@ -239,7 +239,7 @@ function pumpio_settings(App $a, &$s)
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/pumpio/pumpio.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/pumpio/pumpio.css' . '" media="all" />' . "\r\n";
 
 	/* Get the current state of our config variables */
 
diff --git a/smileybutton/smileybutton.php b/smileybutton/smileybutton.php
index 9711ecf2e..9d4916372 100644
--- a/smileybutton/smileybutton.php
+++ b/smileybutton/smileybutton.php
@@ -119,7 +119,7 @@ function show_button(Friendica\App $a, &$b) {
 		$css_file = 'addon/smileybutton/view/default.css';
 	$css_url = DI::baseUrl()->get().'/'.$css_file;
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'.$css_url.'" media="all" />'."\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'.$css_url.'" media="all" />'."\r\n";
 
 
 	//Get the correct image for the theme
diff --git a/statusnet/statusnet.php b/statusnet/statusnet.php
index 0f48b87fe..1d8583849 100644
--- a/statusnet/statusnet.php
+++ b/statusnet/statusnet.php
@@ -239,7 +239,7 @@ function statusnet_settings(App $a, &$s)
 	if (!local_user()) {
 		return;
 	}
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/statusnet/statusnet.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/statusnet/statusnet.css' . '" media="all" />' . "\r\n";
 	/*	 * *
 	 * 1) Check that we have a base api url and a consumer key & secret
 	 * 2) If no OAuthtoken & stuff is present, generate button to get some
diff --git a/tumblr/tumblr.php b/tumblr/tumblr.php
index ac9208ca9..9e0753610 100644
--- a/tumblr/tumblr.php
+++ b/tumblr/tumblr.php
@@ -220,7 +220,7 @@ function tumblr_settings(App $a, &$s)
 
 	/* Add our stylesheet to the page so we can make our settings look nice */
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/tumblr/tumblr.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/tumblr/tumblr.css' . '" media="all" />' . "\r\n";
 
 	/* Get the current state of our config variables */
 
diff --git a/twitter/twitter.php b/twitter/twitter.php
index 52a594809..18625f8b8 100644
--- a/twitter/twitter.php
+++ b/twitter/twitter.php
@@ -288,7 +288,7 @@ function twitter_settings(App $a, &$s)
 	if (!local_user()) {
 		return;
 	}
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/twitter/twitter.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/twitter/twitter.css' . '" media="all" />' . "\r\n";
 	/*	 * *
 	 * 1) Check that we have global consumer key & secret
 	 * 2) If no OAuthtoken & stuff is present, generate button to get some
diff --git a/xmpp/xmpp.php b/xmpp/xmpp.php
index dbcaf67d2..a2a1e17db 100644
--- a/xmpp/xmpp.php
+++ b/xmpp/xmpp.php
@@ -53,7 +53,7 @@ function xmpp_addon_settings(App $a, &$s)
 
 	/* Add our stylesheet to the xmpp so we can make our settings look nice */
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/xmpp/xmpp.css' . '" media="all" />' . "\r\n";
+	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/xmpp/xmpp.css' . '" media="all" />' . "\r\n";
 
 	/* Get the current state of our config variable */
 
@@ -155,8 +155,8 @@ function xmpp_converse(App $a)
 		return;
 	}
 
-	$a->page['htmlhead'] .= '<link type="text/css" rel="stylesheet" media="screen" href="addon/xmpp/converse/css/converse.css" />' . "\n";
-	$a->page['htmlhead'] .= '<script src="addon/xmpp/converse/builds/converse.min.js"></script>' . "\n";
+	DI::page()['htmlhead'] .= '<link type="text/css" rel="stylesheet" media="screen" href="addon/xmpp/converse/css/converse.css" />' . "\n";
+	DI::page()['htmlhead'] .= '<script src="addon/xmpp/converse/builds/converse.min.js"></script>' . "\n";
 
 	if (Config::get("xmpp", "central_userbase") && !PConfig::get(local_user(), "xmpp", "individual")) {
 		$bosh_proxy = Config::get("xmpp", "bosh_proxy");
@@ -216,7 +216,7 @@ function xmpp_converse(App $a)
 					xhr_user_search: false
 				});\n";
 
-	$a->page['htmlhead'] .= "<script>
+	DI::page()['htmlhead'] .= "<script>
 					require(['converse'], function (converse) {
 						$initialize
 						converse.listen.on('ready', function (event) {