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Best diagrams plugins for WordPress

The most popular diagrams plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. MerPress leads with 1K+ active installs, ahead of GutenDraw (100+) and Markdeep Block (fewer than 10). All 5 plugins tagged “diagrams” 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 4 diagrams plugins

  1. 1.
    MerPress

    The most installed diagrams plugin, with 1K+ active installs. Only 4 reviews so far, last updated 1 year ago. Tested only up to WordPress 6.7.11.

  2. 2.
    GutenDraw

    100+ active installs. Only 2 reviews so far, updated 3 months ago. Tested only up to WordPress 6.7.11.

  3. 3.
    Markdeep Block

    Fewer than 10 active installs. No reviews yet, last updated 3 years ago. Tested only up to WordPress 6.0.18.

  4. 4.
    SolveBeam Diagrams with Mermaid

    Fewer than 10 active installs. No reviews yet, updated 4 days ago.

All 5 plugins tagged “diagrams”