Check a page's code compliance, see the errors & warnings by line. Works on local HTML and pages behind authentication.
Check a web page's code compliance at the click of a button and see any errors and warnings broken down by each line. Code compliance can be used on any site, whether it's live or in development. The extension uses the W3C Markup Validator Web Service API.
- (2021-04-27) James Crooke: Well, I use it all the time.