Curlie

Validators and Lints

HTML Validators check HTML against the formal HTML specification published by the World Wide Web Consortium (W3C), giving an error report. HTML Lints check HTML for compatibility with different browsers and screen sizes, download times, spelling, and more. If you are only going to use one, use a validator. HTML which follows the HTML specification will be compatible with the widest audience. For compatibility with disabled users, check your documents against the W3C's Web Site Accessibility Guidelines.

This category is for offline tools, i.e. downloadable software. Online tools, such as web sites that one visits to have a page checked, should go in Computers: Data Formats: Markup Languages: HTML: Tools: Validators and Lints.

This category is for tools which only check a page or site. Editing software which include this feature should go one level up.