List of HTML, CSS, and link validators
This page will provide you with a list and comments for the following validators:
- HTML validators – they check your HTML code for errors
- CSS validators – they check Cascading Style Sheets (CSS) for errors
- Browser compatibility checkers – they check your page to see if it is compatible with various browsers
- Broken link checkers – they check your page for any links that do not work properly
- Accessibility checking – they check if your web page is accessible to people with disabilities.
If you want to check your web page for accessibility, you might also be interested in the Free text to speech screen readers page. You can also expect more articles on HTML and CSS Validation in the near future.
Free HTML Validators, XHTML Validators, Browser Compatibility Checkers
You can check your HTML code by either giving them your web page’s URL or uploading your document directly to the validator. Since W3 Consortium is in charge of the various HTML/CSS standards, they are most people’s first choice.
Not only is HTML Tidy a HTML validator, but they are able to correct bad HTML code and help you identify where you need to change it to make your web page accessible to people with disabilities.
If you don’t feel like downloading your own copy of HTML Tidy, you can use this online version.
They allow you to check your HTML pages for compliance by either entering the URL of the page, or you can download the Perl CGI source code.
Free Web Page Accessibility Checkers
WAVE will check your web page for compliance and re-display it to show you where the problems might be, if any.
This is a web browser toolbar where you can check your page for accessibility issues.
A-Prompt checks for accessibility issues and helps you correct the problems.
Free Cascading Style Sheets (CSS) Validators
You can check your HTML code with W3 Consortium’s CSS validator by either giving them your web page’s URL, using it on your own computer, or uploading your cascading style sheet (CSS) directly to the validator.
CSSCheck: Cascading Style Sheets Lint
CSSCheck is a validator for Cascading Style Sheets (CSS) that also checks for browser compatibility issues with your style sheet.
Free Broken Links Validators
W3 Consortium can also check your documents for dead links, by just entering a URL in the form provided.
Xenu Link Sleuth: Find Broken Links
Xenu can also check your documents for dead links on your web site.

