Title: Advanced editor for Additional CSS
Author: Jorge del Campo Andrade
Published: <strong>2026年5月25日</strong>
Last modified: 2026年6月14日

---

プラグインを検索

![](https://ps.w.org/advanced-editor-for-additional-css/assets/icon.svg?rev=3559195)

# Advanced editor for Additional CSS

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

[ダウンロード](https://downloads.wordpress.org/plugin/advanced-editor-for-additional-css.1.0.2.zip)

 * [詳細](https://ja.wordpress.org/plugins/advanced-editor-for-additional-css/#description)
 * [レビュー](https://ja.wordpress.org/plugins/advanced-editor-for-additional-css/#reviews)
 *  [インストール](https://ja.wordpress.org/plugins/advanced-editor-for-additional-css/#installation)
 * [開発](https://ja.wordpress.org/plugins/advanced-editor-for-additional-css/#developers)

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

## 説明

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**)

## スクリーンショット

[⌊Original CSS editor⌉⌊Original CSS editor⌉[

Original CSS editor

[⌊Advanced CSS editor⌉⌊Advanced CSS editor⌉[

Advanced CSS editor

## インストール

 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.

## 評価

このプラグインにはレビューがありません。

## 貢献者と開発者

Advanced editor for Additional CSS はオープンソースソフトウェアです。以下の人々が
このプラグインに貢献しています。

貢献者

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

[“Advanced editor for Additional CSS” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/advanced-editor-for-additional-css)

### 開発に興味がありますか ?

[コードを閲覧](https://plugins.trac.wordpress.org/browser/advanced-editor-for-additional-css/)
するか、[SVN リポジトリ](https://plugins.svn.wordpress.org/advanced-editor-for-additional-css/)
をチェックするか、[開発ログ](https://plugins.trac.wordpress.org/log/advanced-editor-for-additional-css/)
を [RSS](https://plugins.trac.wordpress.org/log/advanced-editor-for-additional-css/?limit=100&mode=stop_on_copy&format=rss)
で購読してみてください。

## 変更履歴

#### 1.0.2 – 13 jun, 2026

 * HOTFIX: increased line numbers when text overflows textarea vertically
 * Text wrapping deleted: Horizontally scrollable textarea

#### 1.0.1 – 3 jun, 2026

 * New styles to avoid textarea overflowing

#### 1.0.0 – 25 may, 2026

 * Initial release

## メタ

 *  バージョン **1.0.2**
 *  最終更新日 **3か月前**
 *  有効インストール数 **10未満**
 *  WordPress バージョン ** 6.2またはそれ以降 **
 *  検証済み最新バージョン: **7.0.6**
 *  PHP バージョン ** 7.4またはそれ以降 **
 *  言語
 * [English (US)](https://wordpress.org/plugins/advanced-editor-for-additional-css/)
 * タグ
 * [block-editor](https://ja.wordpress.org/plugins/tags/block-editor/)[css](https://ja.wordpress.org/plugins/tags/css/)
   [gutenberg](https://ja.wordpress.org/plugins/tags/gutenberg/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/advanced-editor-for-additional-css/advanced/)

## 評価

レビューはまだ送信されていません。

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

[すべてのレビューを見る](https://wordpress.org/support/plugin/advanced-editor-for-additional-css/reviews/)

## 貢献者

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

## サポート

過去2ヶ月以内に解決した問題:

     1 / 1

 [サポートフォーラムを表示](https://wordpress.org/support/plugin/advanced-editor-for-additional-css/)