Best validator plugins for WordPress
The most popular validator plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Numbers generator and validator leads with 100+ active installs, ahead of RSS Feed Checker (60+) and Virtualbadge.io Certificate Validator (20+). All 12 plugins tagged “validator” 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 9 validator plugins
- 1.
Numbers generator and validatorThe most installed validator plugin, with 100+ active installs. Only 1 review so far, last updated 5 years ago. Tested only up to WordPress 5.8.19.
- 2.
RSS Feed Checker60+ active installs. No reviews yet, last updated 14 years ago. Tested only up to WordPress 3.3.2.
- 3.
Virtualbadge.io Certificate Validator20+ active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.7.11.
- 4.
VAT / UST ID Checker10+ active installs. Only 1 review so far, last updated 6 years ago. Tested only up to WordPress 5.5.24.
- 5.
DNSSEC Test10+ active installs. No reviews yet, last updated 17 years ago. Tested only up to WordPress 2.9.2.
- 6.
bValidator10+ active installs. No reviews yet, last updated 9 years ago. Tested only up to WordPress 4.7.39.
- 7.
Batch Validator10+ active installs. No reviews yet, last updated 19 years ago. Tested only up to WordPress 2.2.2.
- 8.
Email Validator for WooCommerceFewer than 10 active installs. No reviews yet, last updated 6 years ago. Tested only up to WordPress 5.3.27.
- 9.
Rocket Validator Accessibility DashboardFewer than 10 active installs. Only 1 review so far, last updated 2 years ago. Tested only up to WordPress 6.6.11.
All 12 plugins tagged “validator”
Numbers generator and validator
Down in the last 7 days:50#15,764by axel87215 years ago
Numbers generator and validator lets you generate, manage and validate numbers or serials on your site.
- Installs
- 100+
- Rating
- 5.0(1)
- Downloads
- 4/day
RSS Feed Checker
Down in the last 7 days:90#19,623by shake1086114 years ago
This widget will submit your wordpress RSS feed to feedvalidator.org, and check the results to verify your feed is valid.
- Installs
- 60+
- Rating
- –
- Downloads
- 6/day
Virtualbadge.io Certificate Validator
#28,532by futurenextgmbh1 year ago
This plugin helps implementing the Virtualbadge.io certificate validator into a WordPress website.
- Installs
- 20+
- Rating
- –
- Downloads
- 0/day
VAT / UST ID Checker
Down in the last 7 days:473#31,513by mlfactory6 years ago
Just a small plugin that allows you to apply reverse charge (Europe) in WooCommerce.
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 2/day
DNSSEC Test
#39,521by mliljedahl17 years ago
This is a simple plugin for Wordpress to test if the visitors ISP supports DNSSEC. The result is displayd in a widget.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
bValidator
Down in the last 7 days:1,320#42,623by Nishant Vaity9 years ago
bValidator - Form validator for jQuery , bValidator is a jQuery plug-in for client side form validation.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Batch Validator
Down in the last 7 days:3,629#47,457by Roland Rust19 years ago
This plugin performs a batch markup validation check over your entire WordPress website.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Email Validator for WooCommerce
#66,732by UltiWP7 years ago
Email Domain Validator for WooCommerce an easy tool for prevent fake orders.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
Rocket Validator Accessibility Dashboard
Down in the last 7 days:2,357#72,081by Rocket Validator2 years ago
Connect your Rocket Validator account to show the latest site-wide accessibility & HTML validation report for your site.
- Installs
- <10
- Rating
- 5.0(1)
- Downloads
- 0/day