SearchWebCode

Home / Technologies / CMS & Site Builders / Yoast SEO

CMS

Websites Using Yoast SEO

Yoast SEO is the most-installed WordPress SEO plugin; it manages titles, meta descriptions, XML sitemaps and the schema block on a large share of WordPress sites.

8,029,412 sites detected across 129,313,463 indexed domains refreshed monthly · August 2026

The source-code fingerprint

Yoast SEO plugin Search all 8,029,412 results →

Yoast wraps its head output in an HTML comment, 'This site is optimized with the Yoast SEO plugin', so the phrase Yoast SEO plugin is emitted on pages where it runs.

Likely false positives: The marker can be stripped by an HTML minifier or hidden via a filter, so this is a floor for Yoast and, in turn, for the WordPress sites that use it.

Example websites using Yoast SEO

These domains all contain the Yoast SEO plugin fingerprint in their homepage source right now. A match is a verified substring of the live page, so confidence is high, the false positives noted above are the main caveat.

Showing 30 of 8,029,412 matching sites. Open the full ranked list, inspect the matched source, and export the domain list →

Related technologies

WordPressElementorWooCommerceDrupal

How this works

SearchWebCode indexes the raw HTML, CSS and JavaScript source of public web pages. To find sites using Yoast SEO we match the literal fingerprint Yoast SEO plugin, the code Yoast SEO ships, against that index, then verify each match against the raw source. Counts reflect the current index (129,313,463 domains, refreshed monthly, last built August 2026) and grow as we scale toward the whole web. Run the search yourself to see every match, view the full page source for any result, filter by TLD or regex, and export the domain list.

Comparing adoption across tools? The Web Technology Adoption Report ranks the most common tags in the index side by side.