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Best xhtml valid plugins for WordPress

The most popular xhtml valid plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Advanced Videobox leads with 10+ active installs. All 1 plugins tagged “xhtml valid” 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 1 xhtml valid plugins

  1. 1.
    Advanced Videobox

    The most installed xhtml valid plugin, with 10+ active installs. No reviews yet, last updated 14 years ago. Tested only up to WordPress 3.0.5.

All 1 plugins tagged “xhtml valid”