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HTML VALIDATOR (based on Tidy and OpenSP)
The extension is based on Tidy and OpenSP. Both algorithms were originally developed by the Web Consortium W3C. And now extended and improved by a lot of persons. Both algorithms are embedded inside Mozilla/Firefox and makes the validation locally on your machine, without sending HTML to a third party server.
- HTML Tidy is a helpful program that tries to help people to correct their HTML errors. It finds HTML errors and classifies them in 3 categories:
- errors: HTML errors that Tidy cannot fix or understand.
- warnings: HTML errors that Tidy can fix automatically
- (optional) accessibility warnings: HTML warnings for the 3 priority levels defined in W3c WAI
- OpenSP, is SGML parser, is a professional algorithm. It is the same program running inside And now, you can embed it in Firefox !