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webhint vs SiteOne Crawler: catalog facts
webhint	SiteOne Crawler
Free Free open-source project hosted by the OpenJS Foundation.	Free Free and open source.
Browser extension, Command line	Windows, macOS, Linux, Command line
Same checks available in the editor, the browser and CI Built into Microsoft Edge DevTools	Broad audit covering SEO, security, accessibility and performance Both a desktop GUI and a scriptable CLI
The CLI requires Node.js and npx Aimed at developers rather than site owners who want a one-click report	The large number of CLI options takes time to learn Crawling large sites can put load on the target server
Downloadable app, Browser extension	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.