Live from WordPress.org · Oct 22, 2026
Best Markup Validation Plugins for WordPress
2 plugins are tagged “markup validation” on WordPress.org. We rank them by active installs and score every one on update freshness, compatibility, ratings and support — so you can pick a safe one in seconds. The most popular right now is HTML Validation with 300+ active installs.
| Rank | Plugin | Active installs |
|---|---|---|
| 1 |
HTML Validation
The HTML Validation Plugin runs in the background, identifies and reports HTML validation…
|
300+ |
| 2 |
Batch Validator
This plugin performs a batch markup validation check over your entire WordPress website.
|
10+ |
Top Markup Validation plugins, head to head
All comparisons →How we rank
Popularity first, then a health check you can trust
Plugins are ordered the way WordPress.org ranks them for this category. Next to each one you’ll see its health score, so a popular-but-neglected option never sneaks into your stack.
- 25 Update freshness
- 20 Works with the latest WordPress
- 25 Rating, weighted by review count
- 15 Support threads resolved
- 15 Active installs
Popular plugins categories
FAQ
Quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 22, 2026
What is the most popular markup validation plugin for WordPress?
HTML Validation is the most popular markup validation plugin with 300+ active installs and a 1/5 rating on WordPress.org.
How many markup validation plugins are on WordPress.org?
There are currently 2 plugins tagged “markup validation” in the official WordPress.org plugin directory.
Are these markup validation plugins actively maintained?
0 of the top 2 markup validation plugins were updated in the last 30 days. Check each plugin’s health score for update freshness, WordPress compatibility and support responsiveness.
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