HTML Formatter / Minifier

The HTML Formatter / Minifier cleans up markup two ways: it can beautify tangled, single-line or inconsistently indented HTML into a readable tree, or strip it back down to a compact, minified string.

Beautify mode walks your tags and re-emits them with consistent indentation, nesting child elements under their parents and putting each element on its own line so the structure is easy to scan and debug.

Minify mode collapses the insignificant whitespace between tags, trims runs of spaces inside text and removes ordinary comments, which trims the byte count for faster page loads.

The formatter is deliberately forgiving: it understands void elements like img, br and input that have no closing tag, tolerates the occasional unbalanced tag without falling over, and preserves the raw contents of script, style, pre and textarea so their whitespace and code survive exactly as written.

You can also choose how many spaces each indent level uses when beautifying.

Because it is a lexical pass rather than a full browser parser, it focuses on layout and does not rewrite or "fix" your HTML semantics, which keeps the output predictable.

Everything happens locally in your browser, so your markup is never uploaded, logged or stored, and the tool keeps working offline once the page has loaded.