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Best input validation plugins for WordPress

The most popular input validation plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. DigitalMakers Phone Mask with Flags for Contact Form 7 leads with 10+ active installs. All 1 plugins tagged “input validation” 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 input validation plugins

  1. 1.
    DigitalMakers Phone Mask with Flags for Contact Form 7

    The most installed input validation plugin, with 10+ active installs. No reviews yet, updated 4 months ago. Tested only up to WordPress 6.9.11.

All 1 plugins tagged “input validation”