W3C HTML Validation

Allows you to validate the HTML that the current page is made of using the service provided by the W3C. Operation: - Activate the extension on the desired browser page - The extension extracts the HTML of the current page and copies it into "Validate by direct input" of the Markup Validation Service (https://validator.w3.org/#validate_by_input). - By pressing the "Check" button, the W3C service checks that markup validity of Web documents in HTML In this way, it is possible to verify the compliance of the HTML with the W3C standards.