HTML Formatter

An HTML formatter rewrites HTML markup with clean, consistent indentation so the structure of the document is easy to read. Paste a minified page, a snippet copied out of a build tool, or hand-written markup with mismatched tabs and spaces, and the formatter parses the tag tree and prints it back with one level of indentation per nesting depth. The reverse operation, minifying, strips the insignificant whitespace between tags to shrink the file for production without changing how the browser renders it.

Raw HTML rarely arrives in a state you can scan. Server templates emit it on a single line, bundlers collapse it, and pasted fragments carry whatever spacing the source used. Beautifying exposes the nesting so you can find the element you need, spot a tag that was never closed, or diff two versions cleanly. This matters most when you are debugging a layout, auditing markup for accessibility, or reading someone else content for the first time. A formatter turns a wall of angle brackets into an outline you can actually follow.

This tool runs 100% in your browser with a dependency-free parser, so nothing you paste is uploaded or logged, and it keeps working offline once the page has loaded. The parser is deliberately tolerant: it applies the same implied-closing rules a browser uses for tags like li, p, td, and option, so real-world markup with omitted end tags still formats correctly. Content inside script, style, pre, textarea, and title is copied verbatim, which means your JavaScript, CSS, and pre-formatted text are never reindented or broken.