Compare software

HTML-validate vs HTMLHint: catalog facts
HTML-validate	HTMLHint
Free Free to use, with the source code published on GitLab.	Free Free and open source, supported through Open Collective.
Command line	Windows, macOS, Linux, Command line
Validates entirely offline, so no markup is uploaded Handles HTML fragments inside Vue.js and AngularJS components	Rules can be switched on, off or customised per project Runs from the command line or in a build pipeline
Command-line and tooling oriented, with no graphical interface Checks markup only, not CSS or accessibility in a browser	Checks HTML only, not CSS or JavaScript Needs Node.js and npm for the command-line version
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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