The HTML Formatter tidies markup using Prettier, indenting nested elements and wrapping long attributes so templates are easy to read and review. It can also minify HTML for production. It is useful for cleaning markup copied from a CMS, an email builder or a minified page, without uploading the code.
No. The tool runs entirely in your browser with JavaScript. Your code never leaves your device, nothing is logged, and it keeps working offline once the page has loaded.
Formatting only changes whitespace in the source. In rare cases whitespace between inline elements affects spacing, so review inline-heavy markup after formatting.
Last updated: October 2026 · Built by Derar Sattouf