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webhint vs HTMLHint: catalog facts
webhint	HTMLHint
Free Free open-source project hosted by the OpenJS Foundation.	Free Free and open source, supported through Open Collective.
Browser extension, Command line	Windows, macOS, Linux, Command line
Same checks available in the editor, the browser and CI Built into Microsoft Edge DevTools	Rules can be switched on, off or customised per project Runs from the command line or in a build pipeline
The CLI requires Node.js and npx Aimed at developers rather than site owners who want a one-click report	Checks HTML only, not CSS or JavaScript Needs Node.js and npm for the command-line version
Downloadable app, Browser extension	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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