landwire

<p>Responsive Block Control adds responsive toggles to a “Visibility” panel of the block editor, to show or hide blocks according to screen width.</p>
<h3>Security</h3>
<p><strong>Version 1.3.1 resolves a stored cross‑site scripting (XSS) vulnerability (CVE‑2025‑62135) affecting earlier versions (<= 1.2.9).</strong><br />
Users with contributor access or higher should update immediately.</p>
<p>If you discover a security vulnerability, please report it responsibly to: security@saschapaukner.de</p>
<h4>Limitations</h4>
<p>Does not work with the Classic Block, Widget Block or Widget Area Block [‘core/freeform’, ‘core/legacy-widget’, ‘core/widget-area’], as the those blocks do not support block attributes. Does also not work with the HTML Block [‘core/html’] inside the Widget Screen, as this one also does not support block attributes there.</p>
<h3>Configuration</h3>
<h4>Override existing breakpoints</h4>
<pre><code>function override_responsive_block_control_breakpoints($break_points) {
     $break_points['base'] = 0;
     $break_points['mobile'] = 400;
     $break_points['tablet'] = 800;
     $break_points['desktop'] = 1000;
     $break_points['wide'] = 1600;

     return $break_points;
 }

 add_filter('responsive_block_control_breakpoints', 'override_responsive_block_control_breakpoints');
</code></pre>
<h4>Provide custom CSS</h4>
<p>You can provide your own CSS rules per breakpoint using the new filter responsive_block_control_custom_css_rules.</p>
<pre><code>add_filter('responsive_block_control_custom_css_rules', function($rules) {
    return [
        'mobile'  => 'display: none !important;',
        'tablet'  => 'display: none !important;',
        'desktop' => 'display: none !important;',
        'wide'    => 'display: none !important;',
    ];
});
</code></pre>
<h4>Stop css output completely</h4>
<pre><code> function override_responsive_block_control_add_css() {
      return false;
  }
  add_filter('responsive_block_control_breakpoints', 'override_responsive_block_control_add_css');
</code></pre>


Responsive Block Control – Hide blocks based on display width

This plugin does exactly what I need, without adding any extra bloat. Thanks!

Great simple plugin!

Responsive Block Control adds responsive toggles to a "Visibility" panel of the block editor, to show or hide blocks according to screen width.

scott ogilvie

<p>This plug-in makes your WordPress admin area fixed width instead of the default, elastic. This is perhaps of the most utility to users with larger monitors who enjoy rocking large browser windows, but do not enjoy trying to compose a post in an editor that has line-lengths of more than 200 characters. Why is this not an option in the default WordPress install? <em>We have no fricking idea.</em> But now, at least, there is an easy solution. <a href="http://ogilvi.es/fixed-width-admin/" rel="nofollow ugc">http://ogilvi.es/fixed-width-admin/</a></p>
<h3>Customization</h3>
<p>You can easily adjust the width of your admin area, its alignment, and the page background color that appears to the left and right of it. Inside the plug-in folder is a file named wp-admin.css, simply open this file in a text editor, and make your changes. All the code has comments that explain the specific functions—don’t be intimidated, just experiment, and if you go too far you can always re-upload the original file.</p>


Fixed Width Admin

Makes the admin area fixed-width instead of elastic. Easy to customize width.

Responsive Block Control – Hide blocks based on display width vs Fixed Width Admin