Validating Your Page

The W3C Nu HTML Checker reads your page against HTML's rules and lists every mistake with its line number, so you can find and fix what the browser quietly covered up.

Updated

Codey's cheat sheet for Validating Your Page: The W3C Nu HTML Checker reads your page against HTML's rules and lists every mistake with its line number, so you can find and fix what the browser quietly covered up.
Category
HTML
Level
Apprentice
Tags
html, HTML conformance checker, HTML validation, Parse error