W3CVALIDATOR.COM

Online validation tool

This tool crawls your website to check the W3C validity of your pages. You can check several hundred pages by entering your website's main address.



What is W3C validation?

Discover the basics of W3C validation and how it works.

Is it important to have W3C-validated pages?

The reasons why you should have pages that are valid according to W3C standards.

How does the W3Cvalidator.com tool work?

Information on how our online tool works, which will save you time.

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