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Best codemirror plugins for WordPress

The most popular codemirror plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. HTML Editor Syntax Highlighter leads with 60K+ active installs, ahead of Custom Header Footer Scripts for Customizer (1K+) and CodeMirror Blocks (1K+). All 10 plugins tagged “Codemirror” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 10 codemirror plugins

  1. 1.
    HTML Editor Syntax Highlighter

    The most installed codemirror plugin, with 60K+ active installs. Rated 4.4 from 110 reviews, updated 2 weeks ago.

  2. 2.
    Custom Header Footer Scripts for Customizer

    1K+ active installs. Only 2 reviews so far, last updated 3 years ago. Tested only up to WordPress 6.3.14.

  3. 3.
    CodeMirror Blocks

    1K+ active installs. Rated 5.0 from 41 reviews, last updated 2 years ago. Tested only up to WordPress 6.5.14.

  4. 4.
    HTML Widget

    300+ active installs. Only 4 reviews so far, last updated 9 years ago. Tested only up to WordPress 4.8.34.

  5. 5.
    CodeMirror for CodeEditor

    40+ active installs. No reviews yet, last updated 14 years ago. Tested only up to WordPress 3.3.2.

  6. 6.
    WP CodeMirror Themes

    10+ active installs. No reviews yet, last updated 4 years ago. Tested only up to WordPress 5.9.20.

  7. 7.
    codefence.io

    10+ active installs. No reviews yet, last updated 6 years ago. Tested only up to WordPress 5.4.25.

  8. 8.
    Admin IDE Dark Mode

    Fewer than 10 active installs. No reviews yet, last updated 3 years ago. Tested only up to WordPress 6.1.16.

  9. 9.
    Editor Tweaks for CodeMirror

    Fewer than 10 active installs. No reviews yet, updated 6 days ago.

  10. 10.
    Code Syntax Highlighter

    Fewer than 10 active installs. No reviews yet, last updated 8 years ago. Tested only up to WordPress 4.9.35.

All 10 plugins tagged “Codemirror”