Schema plugins overlap heavily with SEO
Schema and SEO labels overlap across much of this category. Of 466 Schema plugins, 311 also carry the SEO tag. The most-installed entries include Yoast SEO, Rank Math SEO, All in One SEO, SiteSEO, and SEOPress, reflecting the prominence of broadly named SEO plugins among the leaders.
Structured data and specialist use cases
Structured-data and JSON-LD tags identify a more focused strand within the wider category.
- Structured data: 126 plugins share this tag with Schema, a useful signal when distinguishing focused labeling from broad SEO positioning.
- JSON-LD: 98 plugins overlap with this tag.
- Specialist names: Schema & Structured Data for WP & AMP and WP Recipe Maker appear among the most-installed entries. Their names suggest more specific positioning, but do not by themselves define the full scope of either plugin.
Related tags reveal a wider SEO toolkit
Related tags point to adjacent concerns that appear alongside Schema, from AI and discovery files to site management and commerce.
- AI: 83 plugins; AI SEO: 44.
- Sitemaps: 64 plugins tagged sitemap; llms.txt: 58.
- Redirects: 44 plugins; FAQ: 37.
- WooCommerce: 34 plugins.
A small group leads a broad, actively updated category
The category has 466 plugins, but relatively few reach high install thresholds, while updates are common. Just 7 have at least 100,000 installs and 16 have at least 10,000; 88% were updated in the last year. At the top, Yoast SEO has 10 million active installs, Rank Math SEO 4 million, and All in One SEO 2 million.
Update timing also varies among prominent entries. Yoast SEO, Rank Math SEO, and All in One SEO were updated this month, while Schema has 30,000 active installs and was updated 16 months ago. These figures put the category’s broad range of listings alongside a smaller high-install group and differing maintenance recency.