Title: Advanced editor for Additional CSS
Author: Jorge del Campo Andrade
Published: <strong>25 mei 2026</strong>
Last modified: 25 mei 2026

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![](https://ps.w.org/advanced-editor-for-additional-css/assets/icon.svg?rev=3548449)

# Advanced editor for Additional CSS

 Door [Jorge del Campo Andrade](https://profiles.wordpress.org/jorgedelcampo/)

[Download](https://downloads.wordpress.org/plugin/advanced-editor-for-additional-css.1.0.0.zip)

 * [Details](https://nl.wordpress.org/plugins/advanced-editor-for-additional-css/#description)
 * [Beoordelingen](https://nl.wordpress.org/plugins/advanced-editor-for-additional-css/#reviews)
 *  [Installatie](https://nl.wordpress.org/plugins/advanced-editor-for-additional-css/#installation)
 * [Ontwikkeling](https://nl.wordpress.org/plugins/advanced-editor-for-additional-css/#developers)

 [Ondersteuning](https://wordpress.org/support/plugin/advanced-editor-for-additional-css/)

## Beschrijving

The default Additional CSS editor in Gutenberg feels like writing code in Notepad.
It’s small, lacks structure, and makes debugging a headache.

This plugin transforms that basic textarea into a comfortable, lightweight CSS editor
directly inside the Site Editor.

My greatest wish is that this plugin will become obsolete once WordPress includes
this feature natively in Gutenberg. Until then, it substantially improves your daily
workflow.

Key coding features supported:

 * Line numbers
 * Auto indented
 * Auto closing parenthesis
 * Add comments with Ctrl / Cmd shortcodes (**Ctrl + Ç**, **Ctrl + /** and **Ctrl
   + 7**)

## Schermafbeeldingen

 * [[
 * Original CSS editor
 * [[
 * Advanced CSS editor

## Installatie

 1. Upload the `advanced-additional-css` folder to `/wp-content/plugins/`
 2. Activate the plugin from the WordPress plugins page
 3. Go to Block editor / Styles / Additional CSS and the new CSS editor will be applied
 4. Enjoy a better CSS coding experience!

## FAQ

### Does this plugin require Gutenberg?

Yes, Advanced editor for Additional CSS only works with new FSE experience / Gutenberg.
If you use the old Customizer editor, these features are included by default. Gutenberg
plugin is not needed.

### Will I lose my current CSS changes if I enable/disable this plugin?

No, Advanced editor for Additional CSS recognizes the Additional CSS content and
just replaces the textarea behavior.

### Does this plugin affect my website’s front-end performance?

No, not at all. This plugin only loads its scripts and styles within the WordPress
admin area (specifically inside the Site Editor). It does not add a single byte 
of code to the front-end, keeping your website’s loading speed and Core Web Vitals
completely unaffected.

### Does it support CSS property autocomplete or Emmet?

Currently, the plugin focuses on enhancing the editor’s core structure (line numbers,
auto-indentation, and shortcuts). Full property autocompletion is not included in
this version, but it helps keep the plugin incredibly lightweight and fast.

## Beoordelingen

Er zijn geen beoordelingen voor deze plugin.

## Bijdragers & ontwikkelaars

“Advanced editor for Additional CSS” is open source software. De volgende personen
hebben bijgedragen aan deze plugin.

Bijdragers

 *   [ Jorge del Campo Andrade ](https://profiles.wordpress.org/jorgedelcampo/)

[Vertaal “Advanced editor for Additional CSS” in je eigen taal.](https://translate.wordpress.org/projects/wp-plugins/advanced-editor-for-additional-css)

### Interesse in ontwikkeling?

[Bekijk de code](https://plugins.trac.wordpress.org/browser/advanced-editor-for-additional-css/),
haal de [SVN repository](https://plugins.svn.wordpress.org/advanced-editor-for-additional-css/)
op, of abonneer je op het [ontwikkellog](https://plugins.trac.wordpress.org/log/advanced-editor-for-additional-css/)
via [RSS](https://plugins.trac.wordpress.org/log/advanced-editor-for-additional-css/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.0.0

 * Initial release

## Meta

 *  Versie **1.0.0**
 *  Laatst geüpdatet **4 dagen geleden**
 *  Actieve installaties **Minder dan 10**
 *  WordPress versie ** 6.2 of nieuwer **
 *  Getest t/m **7.0**
 *  PHP versie ** 7.4 of nieuwer **
 *  Taal
 * [English (US)](https://wordpress.org/plugins/advanced-editor-for-additional-css/)
 * Tags
 * [block-editor](https://nl.wordpress.org/plugins/tags/block-editor/)[css](https://nl.wordpress.org/plugins/tags/css/)
   [gutenberg](https://nl.wordpress.org/plugins/tags/gutenberg/)
 *  [Geavanceerde weergave](https://nl.wordpress.org/plugins/advanced-editor-for-additional-css/advanced/)

## Waarderingen

Er zijn nog geen beoordelingen ingediend.

[Your review](https://wordpress.org/support/plugin/advanced-editor-for-additional-css/reviews/#new-post)

[Bekijk alle beoordelingen](https://wordpress.org/support/plugin/advanced-editor-for-additional-css/reviews/)

## Bijdragers

 *   [ Jorge del Campo Andrade ](https://profiles.wordpress.org/jorgedelcampo/)

## Ondersteuning

Iets te melden? Hulp nodig?

 [Het supportforum bekijken](https://wordpress.org/support/plugin/advanced-editor-for-additional-css/)