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

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