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  1. Home
  2. Plugins
  3. HTML
  4. Custom HTML Block Extension
Custom HTML Block Extension icon

Custom HTML Block Extension

Extend Custom HTML block to evolve into the advanced code editor.

By Aki Hamano·HTML·Free
5(13 reviews)
·6.0K+ active installs·Updated 1 month ago
DownloadCompare

As of April 2026, Custom HTML Block Extension is a WordPress html plugin with 6.0K+ active installations and a 5/5 rating from 13 reviews. It has been downloaded 47K+ times in total. Requires WordPress 6.9+ and PHP 8.0+. Available on WordPress.org since 2021. Recently updated within the last 3 months. Downloads are up 13% this week. Top alternative: Shortcoder — Create Shortcodes for….

5/513 reviews
6.0K+active installs
47K+total downloads
5 yearssince 2021

Overview

Custom HTML Block Extension extends Custom HTML block to evolve into the advanced code editor.
There are 50 different color themes to choose from, and you can select the one that best suits your taste.
This plugin features Emmet that expand shortcut input into complete code. This reduces the number of times you have to type and saves keystrokes.
You can change all kinds of settings to create your ideal editor in advanced mode.
And supports the classic editor, the theme/plugin editor, and import/export editor settings.

Resources

monaco-editor

License: MIT License
Source: https://github.com/microsoft/monaco-editor

emmet-monaco-es

License: MIT License
Source: https://github.com/troy351/emmet-monaco-es

monaco-themes

License: MIT License
Source: https://github.com/brijeshb42/monaco-themes

webf…

Read full description on WordPress.org

Screenshots

Ratings & Reviews

513 reviews
5 ★
13
4 ★
0
3 ★
0
2 ★
0
1 ★
0

Recent Reviews

Nice tool!
by johnny2ponny·3 months ago

Love to use it.

emmetを利用できるプラグインで最も優れています
by ryuryu1029·1 year ago·13 replies

テーマエディター上でemmetを利用したい目的から導入しました。
emmetの利用はもちろん、豊富なオプションでカスタマイズ性も素晴らしいです。
設定のUIも大変わかりやすいです。

最終的に導入に至らなかった点は、テーマエディター上でファイル更新を行うと、ページが更新され元に戻せない点です。
ページ更新やphpのエラーメッセージ表示・位置などがデフォルトの仕様であれば是非導入したいと思います。

I like it very much, but…
by nikvasko·3 years ago

Dear friend. You have made a wonderful plugin. I’ve wanted to find one for a long time and I’m very glad I found it. This is despite the fact that half of the plugin’s functions do not work on my computer.

Minimap, code folding, suggest function are absolutely dead.

But there is a wonderful indentation system. Find and replace text works great. Code coloring is remarkably fast. Well chosen colors. Very convenient multiple selection and correction.
Indeed, I have tried dozen of editors and coloring systems, no one of them is comparable to your package. Huge thanks to you for your work.

Maybe you will find time to understand Why some of the functions do not work on my computer. I am working with WordPress 6.1.1, PHP 7.4.26 system. Even if you only make assumptions, I will be extremely grateful to you.

I am Nick, best regards!

Fabulous!
by TRUmsg·3 years ago

Coding candy!

I love it ♥
by WP Forhad·3 years ago

That’s what I’ve been looking for ♥♥

Download Trends

Today: 46Yesterday: 55This week: 316Period total: 17K

Compatibility

WordPress6.9+ requiredTested up to 7.0
PHP8.0+ required

Version Adoption

v4.0
40.4%
v3.8
21.0%
v3.9
19.9%
Other
13.7%
v3.0
5.0%

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Frequently Asked Questions

Changelog

4.0.0

  • Tested to WordPress 7.0
  • Drop support for WordPress 6.8
  • Remove change indentation UI
  • Fix: Editor crashes when switching to the Code Editor in Firefox
  • Fix: Cut line shortcut doesn’t work
View full changelog on WordPress.org

Contributors

Aki HamanoAki Hamano
Plugin Info
Version
4.0.0
Last Updated
Mar 3, 2026
WP Requires
6.9+
Tested Up To
7.0
PHP Requires
8.0+
Active Installs
6.0K+
Downloads
47K+
Added
May 8, 2021
Business
Free

Tags

htmlblockemmetgutenberghighlighting

Developer

A
Aki Hamano
6 plugins0.1M+ total installs
View all plugins →

Quick Compare

Custom HTML Block Extension vs Shortcoder — Create Shortcodes for…→Custom HTML Block Extension vs Simple Sitemap – Create a Responsive…→Custom HTML Block Extension vs Mammoth .docx converter→

Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.