HTML Minifier

This tool strips HTML comments (except conditional comments), then collapses whitespace between and within tags down to a minimum. The contents of <script>, <style>, <pre> and <textarea> tags are protected from whitespace collapsing first, since removing newlines there could break JavaScript comments, CSS, or visibly alter preformatted text.

This is a regex/heuristic-based minifier, not a full HTML parser, so it won't rename attributes, remove optional quotes, or perform the more aggressive optimizations a build-tool-grade minifier would. It focuses on the safe, high-impact wins: comments and whitespace, which typically account for most of the reducible size in hand-written HTML.