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.
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.
Share this tool
Send it to someone who needs it or save the link for later.
More developer tools
View allXML Formatter
Format, indent and tidy XML.
Markdown Previewer
Write Markdown, preview the HTML live.
Unix Timestamp Converter
Convert epoch timestamps to dates.
Cron Expression Generator
Build and explain cron schedules.
Color Palette Generator
Build palettes from any base color.
Barcode Generator
Create CODE128, EAN and UPC barcodes.