Free tool
CMS Detector
Detection is fingerprint-based: paths, generator tags, CDNs, cookies. A renamed plugin or a custom origin can look unknown — we will not invent a CMS.
What this check covers
- WordPress, Shopify, Next.js, Webflow, and the rest of the engine's stack list
- Builder / SEO-plugin / CDN hints when they appear in HTML
- Confidence and evidence strings
Read it honestly
- Not a complete plugin inventory.
- Scan the public site, not /wp-admin or a raw API host.
Questions
Why did you say Custom / unknown?
No strong fingerprint. That is honest. The full audit still scores headers and SEO on an unknown stack.
Run the complete SiteRune audit
This tool is one chapter. The full brief walks interiors, scores every chapter, and attaches ship files.