HTML Formatter
Last updated: April 12, 2026Format and indent HTML markup.
HTML Formatter is a free online tool to format and indent HTML markup. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use HTML Formatter
This free HTML formatter cleans up and beautifies markup with consistent, readable indentation, or minifies it for production. It is perfect for tidying copied, exported or machine-generated HTML before you work with it. The formatter runs completely in your browser, so your markup is processed locally and never uploaded.
Read the full guide: HTML Formatter Guide: Beautify and Indent Your Markup
- 1Paste your HTML markup into the input area.
- 2Choose Beautify to indent it cleanly or Minify to compress it for production.
- 3Copy the formatted markup straight into your project.
Clean indentation
Nested tags are indented consistently so the structure of your page is easy to follow.
Beautify or minify
Switch between readable formatting and compact output depending on whether you are editing or shipping.
Local processing
Markup is formatted in your browser, keeping any private content out of server logs.
Indent minified HTML from view-source
When you copy a single dense line of HTML straight from a page's view-source or a saved .html file, the nesting is impossible to follow. Paste it here and hit Format to expand everything onto its own line with clean 2-space indentation. Comments and content stay untouched, so you can read the structure, find a specific element and trace where each closing tag belongs.
Tidy framework or CMS export markup
HTML pasted out of a WYSIWYG editor, an email builder or a CMS export often arrives with erratic spacing and inconsistent indentation. Drop it in and Format rewrites only the whitespace, leaving your tags, attributes and text exactly as they were. The rendered page looks identical, but the source becomes consistently indented so it is far easier to edit by hand or commit to a repo.
Minify an HTML email or snippet
Before pasting a banner, signature or landing-page fragment into a template field, use Minify to strip every HTML comment, collapse the whitespace between tags and squeeze repeated spaces into one. You get a compact single-block output that drops file size and avoids stray gaps in tools that choke on extra line breaks. One click copies it ready to paste into your campaign or build.
HTML Formatter — frequently asked questions
Will formatting break my HTML?
No. The formatter only changes whitespace and indentation. Your tags, attributes and content stay intact, so the rendered page looks the same.
Can it minify HTML for production?
Yes. The minify option strips unnecessary whitespace and line breaks to reduce file size, which can help pages load a little faster.
Does it work with copied or generated markup?
Yes. It is designed to tidy messy HTML from any source, including code copied from a page or output by a tool or framework.
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