HTML Markup Validation Bookmarklet

Try Semtex – the new HTML5, CSS3 and JavaScript UI framework!

Acid.JS Validator is a free bookmarklet that uses the W3C SGML parser’s API to validate the markup of the page on which it is called. To start using the bookmarklet, go to this page and follow the instructions.

To validate a page, simply click the bookmark and you will be presented with a detailed validation report. In you are a chrome user, you can get and install the bookmarklet from Google Web Store.

Screenshots

Validation Success

Validation Failure

Site Cannot be Checked

Supported Browsers *

• Mozilla Firefox
• Google Chrome

* More browsers will be supported soon

To get your HTML markup validation bookmarklet, go to this page and follow the instructions.

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