HTML Beautifier
Beautify HTML — proper indentation for minified or messy markup.
How to use HTML Beautifier
- Paste the HTML — minified page source, generated markup or messy template.
- Read the beautified output — indentation now mirrors the element tree.
- Debug or edit — unclosed tags and wrong nesting become visible when structure aligns.
- Minify again for production if the source was shipped code — beautified is for editing.
What is HTML Beautifier?
An HTML beautifier re-indents markup so nesting becomes visible: each child element steps in one level, siblings align, and the document's tree structure — invisible in minified or chaotically indented HTML — reads at a glance. The markup itself is unchanged; only inter-tag whitespace moves.
You need it whenever HTML arrives flattened: production pages are minified (view-source shows one endless line), CMSs and email builders generate unindented soup, and copy-pasted snippets carry their source's inconsistent formatting into yours. Structure you can't see is structure you can't debug.
About the HTML Beautifier
Paste HTML — minified, mangled or merely inconsistent — and get it back properly indented, ready to read, edit or diff.
The daily cases: inspecting a production page's source to find a tag or verify markup (beautify first, then search), untangling a deeply nested div structure to find the unclosed element breaking a layout, cleaning template code before committing it, and normalizing formatting across snippets assembled from different sources so the file stops looking like a ransom note.
Whitespace subtleties are respected: <pre> and <textarea> content is left alone (their whitespace is data), and inline elements keep sensible spacing. The reverse operation — stripping the indentation back out for production — is the HTML Minifier's job; beautify for humans, minify for shipping.