diff --git a/templates/followers-list.php b/templates/followers-list.php
index 46d5485..aa86c39 100644
--- a/templates/followers-list.php
+++ b/templates/followers-list.php
@@ -1,7 +1,7 @@
 <div class="wrap">
-	<h1><?php esc_html_e( 'Followers (Fediverse)', 'activitypub' ); ?></h1>
+	<h1><?php \esc_html_e( 'Followers (Fediverse)', 'activitypub' ); ?></h1>
 
-	<p><?php printf( __( 'You currently have %s followers.', 'activitypub' ), esc_attr( \Activitypub\Db\Followers::count_followers( get_current_user_id() ) ) ); ?></p>
+	<p><?php \printf( \__( 'You currently have %s followers.', 'activitypub' ), \esc_attr( \Activitypub\Db\Followers::count_followers( \get_current_user_id() ) ) ); ?></p>
 
 	<?php $token_table = new \Activitypub\Table\Followers_List(); ?>
 
diff --git a/templates/json-author.php b/templates/json-author.php
index 9f2c3b0..2228871 100644
--- a/templates/json-author.php
+++ b/templates/json-author.php
@@ -1,43 +1,43 @@
 <?php
-$author_id = get_the_author_meta( 'ID' );
+$author_id = \get_the_author_meta( 'ID' );
 
-$json = new stdClass();
+$json = new \stdClass();
 
 $json->{'@context'} = \Activitypub\get_context();
-$json->id = get_author_posts_url( $author_id );
+$json->id = \get_author_posts_url( $author_id );
 $json->type = 'Person';
-$json->name = get_the_author_meta( 'display_name', $author_id );
-$json->summary = html_entity_decode(
-	get_the_author_meta( 'description', $author_id ),
+$json->name = \get_the_author_meta( 'display_name', $author_id );
+$json->summary = \html_entity_decode(
+	\get_the_author_meta( 'description', $author_id ),
 	ENT_QUOTES,
 	'UTF-8'
 );
-$json->preferredUsername = get_the_author_meta( 'login', $author_id ); // phpcs:ignore
-$json->url = get_author_posts_url( $author_id );
+$json->preferredUsername = \get_the_author_meta( 'login', $author_id ); // phpcs:ignore
+$json->url = \get_author_posts_url( $author_id );
 $json->icon = array(
 	'type' => 'Image',
-	'url'  => get_avatar_url( $author_id, array( 'size' => 120 ) ),
+	'url'  => \get_avatar_url( $author_id, array( 'size' => 120 ) ),
 );
 
-if ( has_header_image() ) {
+if ( \has_header_image() ) {
 	$json->image = array(
 		'type' => 'Image',
-		'url'  => get_header_image(),
+		'url'  => \get_header_image(),
 	);
 }
 
-$json->inbox = get_rest_url( null, "/activitypub/1.0/users/$author_id/inbox" );
-$json->outbox = get_rest_url( null, "/activitypub/1.0/users/$author_id/outbox" );
-$json->followers = get_rest_url( null, "/activitypub/1.0/users/$author_id/followers" );
-$json->following = get_rest_url( null, "/activitypub/1.0/users/$author_id/following" );
+$json->inbox = \get_rest_url( null, "/activitypub/1.0/users/$author_id/inbox" );
+$json->outbox = \get_rest_url( null, "/activitypub/1.0/users/$author_id/outbox" );
+$json->followers = \get_rest_url( null, "/activitypub/1.0/users/$author_id/followers" );
+$json->following = \get_rest_url( null, "/activitypub/1.0/users/$author_id/following" );
 
-$json->manuallyApprovesFollowers = apply_filters( 'activitypub_json_manually_approves_followers', __return_false() ); // phpcs:ignore
+$json->manuallyApprovesFollowers = \apply_filters( 'activitypub_json_manually_approves_followers', __return_false() ); // phpcs:ignore
 
 // phpcs:ignore
 $json->publicKey = array(
-	'id' => get_author_posts_url( $author_id ) . '#main-key',
-	'owner' => get_author_posts_url( $author_id ),
-	'publicKeyPem' => trim( \Activitypub\Signature::get_public_key( $author_id ) ),
+	'id' => \get_author_posts_url( $author_id ) . '#main-key',
+	'owner' => \get_author_posts_url( $author_id ),
+	'publicKeyPem' => \trim( \Activitypub\Signature::get_public_key( $author_id ) ),
 );
 
 $json->tag = array();
@@ -46,8 +46,8 @@ $json->attachment = array();
 $json->attachment[] = array(
 	'type' => 'PropertyValue',
 	'name' => __( 'Blog', 'activitypub' ),
-	'value' => html_entity_decode(
-		'<a rel="me" title="' . esc_attr( home_url( '/' ) ) . '" target="_blank" href="' . home_url( '/' ) . '">' . wp_parse_url( home_url( '/' ), PHP_URL_HOST ) . '</a>',
+	'value' => \html_entity_decode(
+		'<a rel="me" title="' . \esc_attr( \home_url( '/' ) ) . '" target="_blank" href="' . \home_url( '/' ) . '">' . \wp_parse_url( \home_url( '/' ), PHP_URL_HOST ) . '</a>',
 		ENT_QUOTES,
 		'UTF-8'
 	),
@@ -56,19 +56,19 @@ $json->attachment[] = array(
 $json->attachment[] = array(
 	'type' => 'PropertyValue',
 	'name' => __( 'Profile', 'activitypub' ),
-	'value' => html_entity_decode(
-		'<a rel="me" title="' . esc_attr( get_author_posts_url( $author_id ) ) . '" target="_blank" href="' . get_author_posts_url( $author_id ) . '">' . wp_parse_url( get_author_posts_url( $author_id ), PHP_URL_HOST ) . '</a>',
+	'value' => \html_entity_decode(
+		'<a rel="me" title="' . \esc_attr( \get_author_posts_url( $author_id ) ) . '" target="_blank" href="' . \get_author_posts_url( $author_id ) . '">' . \wp_parse_url( \get_author_posts_url( $author_id ), PHP_URL_HOST ) . '</a>',
 		ENT_QUOTES,
 		'UTF-8'
 	),
 );
 
-if ( get_the_author_meta( 'user_url', $author_id ) ) {
+if ( \get_the_author_meta( 'user_url', $author_id ) ) {
 	$json->attachment[] = array(
 		'type' => 'PropertyValue',
 		'name' => __( 'Website', 'activitypub' ),
-		'value' => html_entity_decode(
-			'<a rel="me" title="' . esc_attr( get_the_author_meta( 'user_url', $author_id ) ) . '" target="_blank" href="' . get_the_author_meta( 'user_url', $author_id ) . '">' . wp_parse_url( get_the_author_meta( 'user_url', $author_id ), PHP_URL_HOST ) . '</a>',
+		'value' => \html_entity_decode(
+			'<a rel="me" title="' . \esc_attr( \get_the_author_meta( 'user_url', $author_id ) ) . '" target="_blank" href="' . \get_the_author_meta( 'user_url', $author_id ) . '">' . \wp_parse_url( \get_the_author_meta( 'user_url', $author_id ), PHP_URL_HOST ) . '</a>',
 			ENT_QUOTES,
 			'UTF-8'
 		),
@@ -76,20 +76,20 @@ if ( get_the_author_meta( 'user_url', $author_id ) ) {
 }
 
 //$json->endpoints = array(
-//	'sharedInbox' => get_rest_url( null, '/activitypub/1.0/inbox' ),
+//	'sharedInbox' => \get_rest_url( null, '/activitypub/1.0/inbox' ),
 //);
 
 // filter output
-$json = apply_filters( 'activitypub_json_author_array', $json );
+$json = \apply_filters( 'activitypub_json_author_array', $json );
 
 /*
  * Action triggerd prior to the ActivityPub profile being created and sent to the client
  */
-do_action( 'activitypub_json_author_pre' );
+\do_action( 'activitypub_json_author_pre' );
 
 $options = 0;
 // JSON_PRETTY_PRINT added in PHP 5.4
-if ( get_query_var( 'pretty' ) ) {
+if ( \get_query_var( 'pretty' ) ) {
 	$options |= JSON_PRETTY_PRINT; // phpcs:ignore
 }
 
@@ -100,12 +100,12 @@ $options |= JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_QUOT;
  *
  * @param int $options The current options flags
  */
-$options = apply_filters( 'activitypub_json_author_options', $options );
+$options = \apply_filters( 'activitypub_json_author_options', $options );
 
-header( 'Content-Type: application/activity+json' );
-echo wp_json_encode( $json, $options );
+\header( 'Content-Type: application/activity+json' );
+echo \wp_json_encode( $json, $options );
 
 /*
  * Action triggerd after the ActivityPub profile has been created and sent to the client
  */
-do_action( 'activitypub_json_author_post' );
+\do_action( 'activitypub_json_author_post' );
diff --git a/templates/json-post.php b/templates/json-post.php
index 8ab028e..04f683f 100644
--- a/templates/json-post.php
+++ b/templates/json-post.php
@@ -1,20 +1,20 @@
 <?php
-$post = get_post();
+$post = \get_post();
 
 $activitypub_post = new \Activitypub\Post( $post );
-$json = array_merge( array( '@context' => \Activitypub\get_context() ), $activitypub_post->to_array() );
+$json = \array_merge( array( '@context' => \Activitypub\get_context() ), $activitypub_post->to_array() );
 
 // filter output
-$json = apply_filters( 'activitypub_json_post_array', $json );
+$json = \apply_filters( 'activitypub_json_post_array', $json );
 
 /*
  * Action triggerd prior to the ActivityPub profile being created and sent to the client
  */
-do_action( 'activitypub_json_post_pre' );
+\do_action( 'activitypub_json_post_pre' );
 
 $options = 0;
 // JSON_PRETTY_PRINT added in PHP 5.4
-if ( get_query_var( 'pretty' ) ) {
+if ( \get_query_var( 'pretty' ) ) {
 	$options |= JSON_PRETTY_PRINT; // phpcs:ignore
 }
 
@@ -25,12 +25,12 @@ $options |= JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_QUOT;
  *
  * @param int $options The current options flags
  */
-$options = apply_filters( 'activitypub_json_post_options', $options );
+$options = \apply_filters( 'activitypub_json_post_options', $options );
 
-header( 'Content-Type: application/activity+json' );
-echo wp_json_encode( $json, $options );
+\header( 'Content-Type: application/activity+json' );
+echo \wp_json_encode( $json, $options );
 
 /*
  * Action triggerd after the ActivityPub profile has been created and sent to the client
  */
-do_action( 'activitypub_json_post_post' );
+\do_action( 'activitypub_json_post_post' );
diff --git a/templates/settings.php b/templates/settings.php
index 4d124e4..93f1d75 100644
--- a/templates/settings.php
+++ b/templates/settings.php
@@ -1,14 +1,14 @@
 <div class="wrap">
-	<h1><?php esc_html_e( 'ActivityPub Settings', 'activitypub' ); ?></h1>
+	<h1><?php \esc_html_e( 'ActivityPub Settings', 'activitypub' ); ?></h1>
 
-	<p><?php esc_html_e( 'ActivityPub turns your blog into a federated social network. This means you can share and talk to everyone using the ActivityPub protocol, including users of Friendica, Pleroma and Mastodon.', 'activitypub' ); ?></p>
+	<p><?php \esc_html_e( 'ActivityPub turns your blog into a federated social network. This means you can share and talk to everyone using the ActivityPub protocol, including users of Friendica, Pleroma and Mastodon.', 'activitypub' ); ?></p>
 
 	<form method="post" action="options.php">
-		<?php settings_fields( 'activitypub' ); ?>
+		<?php \settings_fields( 'activitypub' ); ?>
 
-		<h2><?php esc_html_e( 'Activities', 'activitypub' ); ?></h2>
+		<h2><?php \esc_html_e( 'Activities', 'activitypub' ); ?></h2>
 
-		<p><?php esc_html_e( 'All activity related settings.', 'activitypub' ); ?></p>
+		<p><?php \esc_html_e( 'All activity related settings.', 'activitypub' ); ?></p>
 
 		<table class="form-table">
 			<tbody>
@@ -18,59 +18,59 @@
 					</th>
 					<td>
 						<p>
-							<label><input type="radio" name="activitypub_post_content_type" id="activitypub_post_content_type_excerpt" value="excerpt" <?php echo checked( 'excerpt', get_option( 'activitypub_post_content_type', 'content' ) ); ?> /> <?php esc_html_e( 'Excerpt', 'activitypub' ); ?></label> - <span class="description"><?php esc_html_e( 'A content summary, shortened to 400 characters and without markup.', 'activitypub' ); ?></span>
+							<label><input type="radio" name="activitypub_post_content_type" id="activitypub_post_content_type_excerpt" value="excerpt" <?php echo \checked( 'excerpt', \get_option( 'activitypub_post_content_type', 'content' ) ); ?> /> <?php \esc_html_e( 'Excerpt', 'activitypub' ); ?></label> - <span class="description"><?php \esc_html_e( 'A content summary, shortened to 400 characters and without markup.', 'activitypub' ); ?></span>
 						</p>
 						<p>
-							<label><input type="radio" name="activitypub_post_content_type" id="activitypub_post_content_type_content" value="content" <?php echo checked( 'content', get_option( 'activitypub_post_content_type', 'content' ) ); ?> /> <?php esc_html_e( 'Content (default)', 'activitypub' ); ?></label> - <span class="description"><?php esc_html_e( 'The full content.', 'activitypub' ); ?></span>
+							<label><input type="radio" name="activitypub_post_content_type" id="activitypub_post_content_type_content" value="content" <?php echo \checked( 'content', \get_option( 'activitypub_post_content_type', 'content' ) ); ?> /> <?php \esc_html_e( 'Content (default)', 'activitypub' ); ?></label> - <span class="description"><?php \esc_html_e( 'The full content.', 'activitypub' ); ?></span>
 						</p>
 					</td>
 				</tr>
 				<tr>
 					<th scope="row">
-						<?php esc_html_e( 'Backlink', 'activitypub' ); ?>
+						<?php \esc_html_e( 'Backlink', 'activitypub' ); ?>
 					</th>
 					<td>
-						<p><label><input type="checkbox" name="activitypub_use_shortlink" id="activitypub_use_shortlink" value="1" <?php echo checked( '1', get_option( 'activitypub_use_shortlink', '0' ) ); ?> /> <?php esc_html_e( 'Use the Shortlink instead of the permalink', 'activitypub' ); ?></label></p>
-						<p class="description"><?php printf( esc_html( 'I can recommend %sHum%s, to prettify the Shortlinks', 'activitypub' ), '<a href="https://wordpress.org/plugins/hum/" target="_blank">', '</a>' ); ?></p>
+						<p><label><input type="checkbox" name="activitypub_use_shortlink" id="activitypub_use_shortlink" value="1" <?php echo \checked( '1', \get_option( 'activitypub_use_shortlink', '0' ) ); ?> /> <?php \esc_html_e( 'Use the Shortlink instead of the permalink', 'activitypub' ); ?></label></p>
+						<p class="description"><?php \printf( esc_html( 'I can recommend %sHum%s, to prettify the Shortlinks', 'activitypub' ), '<a href="https://wordpress.org/plugins/hum/" target="_blank">', '</a>' ); ?></p>
 					</td>
 				</tr>
 				<tr>
 					<th scope="row">
-						<?php esc_html_e( 'Activity-Object-Type', 'activitypub' ); ?>
+						<?php \esc_html_e( 'Activity-Object-Type', 'activitypub' ); ?>
 					</th>
 					<td>
 						<p>
-							<label><input type="radio" name="activitypub_object_type" id="activitypub_object_type_note" value="note" <?php echo checked( 'note', get_option( 'activitypub_object_type', 'note' ) ); ?> /> <?php esc_html_e( 'Note (default)', 'activitypub' ); ?></label> - <span class="description"><?php esc_html_e( 'Should work with most platforms.', 'activitypub' ); ?></span>
+							<label><input type="radio" name="activitypub_object_type" id="activitypub_object_type_note" value="note" <?php echo \checked( 'note', \get_option( 'activitypub_object_type', 'note' ) ); ?> /> <?php \esc_html_e( 'Note (default)', 'activitypub' ); ?></label> - <span class="description"><?php \esc_html_e( 'Should work with most platforms.', 'activitypub' ); ?></span>
 						</p>
 						<p>
-							<label><input type="radio" name="activitypub_object_type" id="activitypub_object_type_article" value="article" <?php echo checked( 'article', get_option( 'activitypub_object_type', 'note' ) ); ?> /> <?php esc_html_e( 'Article', 'activitypub' ); ?></label> - <span class="description"><?php esc_html_e( 'The presentation of the "Article" might change on different platforms. Mastodon for example shows the "Article" type as a simple link.', 'activitypub' ); ?></span>
+							<label><input type="radio" name="activitypub_object_type" id="activitypub_object_type_article" value="article" <?php echo \checked( 'article', \get_option( 'activitypub_object_type', 'note' ) ); ?> /> <?php \esc_html_e( 'Article', 'activitypub' ); ?></label> - <span class="description"><?php \esc_html_e( 'The presentation of the "Article" might change on different platforms. Mastodon for example shows the "Article" type as a simple link.', 'activitypub' ); ?></span>
 						</p>
 						<p>
-							<label><input type="radio" name="activitypub_object_type" id="activitypub_object_type" value="wordpress-post-format" <?php echo checked( 'wordpress-post-format', get_option( 'activitypub_object_type', 'note' ) ); ?> /> <?php esc_html_e( 'WordPress Post-Format', 'activitypub' ); ?></label> - <span class="description"><?php esc_html_e( 'Maps the WordPress Post-Format to the ActivityPub Object Type.', 'activitypub' ); ?></span>
+							<label><input type="radio" name="activitypub_object_type" id="activitypub_object_type" value="wordpress-post-format" <?php echo \checked( 'wordpress-post-format', \get_option( 'activitypub_object_type', 'note' ) ); ?> /> <?php \esc_html_e( 'WordPress Post-Format', 'activitypub' ); ?></label> - <span class="description"><?php \esc_html_e( 'Maps the WordPress Post-Format to the ActivityPub Object Type.', 'activitypub' ); ?></span>
 						</p>
 					</td>
 				</tr>
 				<tr>
 					<th scope="row">
-						<?php esc_html_e( 'Hashtags', 'activitypub' ); ?>
+						<?php \esc_html_e( 'Hashtags', 'activitypub' ); ?>
 					</th>
 					<td>
 						<p>
-							<label><input type="checkbox" name="activitypub_use_hashtags" id="activitypub_use_hashtags" value="1" <?php echo checked( '1', get_option( 'activitypub_use_hashtags', '1' ) ); ?> /> <?php _e( 'Add hashtags in the content as native tags and replace the <code>#tag</code> with the tag-link.', 'activitypub' ); ?></label>
+							<label><input type="checkbox" name="activitypub_use_hashtags" id="activitypub_use_hashtags" value="1" <?php echo \checked( '1', \get_option( 'activitypub_use_hashtags', '1' ) ); ?> /> <?php \_e( 'Add hashtags in the content as native tags and replace the <code>#tag</code> with the tag-link.', 'activitypub' ); ?></label>
 						</p>
 						<p>
-							<label><input type="checkbox" name="activitypub_add_tags_as_hashtags" id="activitypub_add_tags_as_hashtags" value="1" <?php echo checked( '1', get_option( 'activitypub_add_tags_as_hashtags', '0' ) ); ?> /> <?php _e( 'Add all tags as hashtags to the end of each activity.', 'activitypub' ); ?></label>
+							<label><input type="checkbox" name="activitypub_add_tags_as_hashtags" id="activitypub_add_tags_as_hashtags" value="1" <?php echo \checked( '1', \get_option( 'activitypub_add_tags_as_hashtags', '0' ) ); ?> /> <?php \_e( 'Add all tags as hashtags to the end of each activity.', 'activitypub' ); ?></label>
 						</p>
 					</td>
 				</tr>
 			</tbody>
 		</table>
 
-		<?php do_settings_fields( 'activitypub', 'activity' ); ?>
+		<?php \do_settings_fields( 'activitypub', 'activity' ); ?>
 
-		<?php do_settings_sections( 'activitypub' ); ?>
+		<?php \do_settings_sections( 'activitypub' ); ?>
 
-		<?php submit_button(); ?>
+		<?php \submit_button(); ?>
 	</form>
 
 	<p>