This plugin will allow you to check your pages/posts HTML against the W3C Validator.
Is your website up to W3C HTML coding standards? This plugin will allow you to test each page or post on your site against the W3C Validator.
Want to contribute? Fork it: https://github.com/allan23/validated
Download the plugin, extract and upload it to your plugins folder on your server.
Activate the plugin.
Go to your posts or your pages and click the “Check” button.
This plugin will send the URL of your page or post to the W3C Validator API to verify that you have valid HTML code.
No. If your page or post is invalid, a link is provided to show you what needs to be fixed.