diff --git a/lib/classes/AlterHtmlInit.php b/lib/classes/AlterHtmlInit.php
index b32caf9d..24c2c5f5 100644
--- a/lib/classes/AlterHtmlInit.php
+++ b/lib/classes/AlterHtmlInit.php
@@ -107,6 +107,21 @@ public static function setHooks() {
             add_filter( 'the_excerpt', '\\WebPExpress\\AlterHtmlInit::alterHtml', 99999 );
             add_filter( 'post_thumbnail_html', '\\WebPExpress\\AlterHtmlInit::alterHtml', 99999);
 
+            // Run custom Filtering Hooks for support 3rd plugins that do not hardcode above
+            $hooks_list = Option::getOption('webp-express-alter-html-content-hooks-list');
+            if ( ! empty( $hooks_list ) ) {
+                $hooks_list = explode( "\n", $hooks_list );
+                if ( ! empty( $hooks_list ) ) {
+                    $hooks_list = array_map( 'trim', $hooks_list );
+
+                    foreach ( $hooks_list as $hook_tag ) {
+                        if ( ! empty( $hook_tag ) ) {
+                            add_filter( $hook_tag, '\\WebPExpress\\AlterHtmlInit::alterHtml', 99999);
+                        }
+                    }
+                }
+            }
+
 
             /*
             TODO:
diff --git a/lib/classes/Config.php b/lib/classes/Config.php
index 520b7e57..58626792 100644
--- a/lib/classes/Config.php
+++ b/lib/classes/Config.php
@@ -83,6 +83,7 @@ public static function getDefaultConfig($skipQualityAuto = false) {
                 'enabled' => false,
                 'replacement' => 'picture',          // "picture" or "url"
                 'hooks' => 'ob',             // "content-hooks" or "ob"
+                'content-hooks-list' => '',     // hooks list for hooks field is "content-hooks"
                 'only-for-webp-enabled-browsers' => true,     // If true, there will be two HTML versions of each page
                 'only-for-webps-that-exists' => false,
                 'alter-html-add-picturefill-js' => true,
@@ -394,6 +395,7 @@ public static function updateAutoloadedOptions($config)
 
         Option::updateOption('webp-express-alter-html', $config['alter-html']['enabled'], true);
         Option::updateOption('webp-express-alter-html-hooks', $config['alter-html']['hooks'], true);
+        Option::updateOption('webp-express-alter-html-content-hooks-list', $config['alter-html']['content-hooks-list'], '');
         Option::updateOption('webp-express-alter-html-replacement', $config['alter-html']['replacement'], true);
         Option::updateOption('webp-express-alter-html-add-picturefill-js', (($config['alter-html']['replacement'] == 'picture') && (isset($config['alter-html']['alter-html-add-picturefill-js']) && $config['alter-html']['alter-html-add-picturefill-js'])), true);
 
diff --git a/lib/options/js/0.16.0/page.js b/lib/options/js/0.16.0/page.js
index bc1f31b2..12741647 100644
--- a/lib/options/js/0.16.0/page.js
+++ b/lib/options/js/0.16.0/page.js
@@ -264,6 +264,22 @@ document.addEventListener('DOMContentLoaded', function() {
         });
     }
 
+    // Show/hide "Add custom filtering hooks from theme or plugins here, 1 per line" when "Where to replace" is changed
+    if (el('alter_html_hooks_content_hooks') && el('alter_html_content_hooks_options_div')) {
+        el('alter_html_content_hooks_options_div').classList.add('effect-opacity');
+        function updateFilteringHooksVisibility() {
+            toggleVisibility('alter_html_content_hooks_options_div', el('alter_html_hooks_content_hooks').checked);
+        }
+        updateFilteringHooksVisibility();
+
+        el('alter_html_hooks_content_hooks').addEventListener('change', function() {
+            updateFilteringHooksVisibility();
+        });
+        el('alter_html_hooks_ob').addEventListener('change', function() {
+            updateFilteringHooksVisibility();
+        });
+    }
+
     if (el('ui_show_alter_html_chart') && el('alter_html_comparison_chart')) {
         var elm = el('alter_html_comparison_chart');
         elm.style['maxHeight'] = (elm.clientHeight + 80) + 'px';
diff --git a/lib/options/options/alter-html/alter-html-options.inc b/lib/options/options/alter-html/alter-html-options.inc
index c7b7a6c2..27408e8e 100644
--- a/lib/options/options/alter-html/alter-html-options.inc
+++ b/lib/options/options/alter-html/alter-html-options.inc
@@ -183,14 +183,33 @@ namespace WebPExpress;
                     '<p></p>',
                     'no-margin-left set-margin-right');
                 ?></label>
+                <ul style="margin-left: 20px; margin-top: 5px"><li>
                 <?php
-                webpexpress_radioButtons('alter-html-hooks', $config['alter-html']['hooks'], [
-                    'content-hooks' => 'Use content filtering hooks (the_content, the_excerpt, etc)',
-                    'ob' => 'The complete page (using output buffering)</em>',
-                ], [
-                ]
+                webpexpress_radioButton(
+                  'alter-html-hooks',
+                  'content-hooks',
+                  'Use content filtering hooks (the_content, the_excerpt, etc)',
+                  $config['alter-html']['hooks']     // PS: the function takes care of the escaping
                 );
                 ?>
+                </li>
+                <li><div id="alter_html_content_hooks_options_div" style="margin-left:18px; margin-bottom: 13px;">
+                    <div style="margin:10px 0 0 10px;">
+                        <label for="alter_html_content_hooks_list">Add custom filtering hooks from theme or plugins here, 1 per line:</label><br/>
+                        <textarea id="alter_html_content_hooks_list" name="alter-html-content-hooks-list" cols="50" rows="4"><?php echo stripslashes( $config['alter-html']['content-hooks-list'] ); ?></textarea>
+                    </div>
+                </div></li>
+                <li>
+                <?php
+                webpexpress_radioButton(
+                  'alter-html-hooks',
+                  'ob',
+                  'The complete page (using output buffering)',
+                  $config['alter-html']['hooks']  // PS: the function takes care of the escaping
+                );
+                ?>
+                </li>
+                </ul>
             </div>
             <div style="margin-top: 20px">
                 <label>CDN hostname(s) / hostname alias(es) <?php echo helpIcon(
diff --git a/lib/options/submit.php b/lib/options/submit.php
index ca61f56b..ea5aea87 100644
--- a/lib/options/submit.php
+++ b/lib/options/submit.php
@@ -456,6 +456,7 @@ function webpexpress_getSanitizedAlterHtmlHostnameAliases() {
         'content-hooks',
         'ob'
     ]),
+    'alter-html-content-hooks-list' => str_replace( array( "'", '"', '\\' ), '', sanitize_textarea_field( $_POST['alter-html-content-hooks-list'] ) ),
     'alter-html-hostname-aliases' => webpexpress_getSanitizedAlterHtmlHostnameAliases(),
 
 
@@ -528,6 +529,7 @@ function webpexpress_getSanitizedAlterHtmlHostnameAliases() {
 
 $config['alter-html']['replacement'] = $sanitized['alter-html-replacement'];
 $config['alter-html']['hooks'] = $sanitized['alter-html-hooks'];
+$config['alter-html']['content-hooks-list'] = $sanitized['alter-html-content-hooks-list'];
 $config['alter-html']['hostname-aliases'] = $sanitized['alter-html-hostname-aliases'];