Formatting HTML markup
Readable, indented HTML is much easier to review and debug than a single-line blob. This tool indents nested tags or strips whitespace and comments for production.
HTML Formatter
Paste HTML to beautify it with indentation, or switch to minify mode to compact it.
How it works
- 1
Paste your input into the editor.
- 2
Choose format / mode options if available.
- 3
Copy the transformed output (it usually updates as you edit).
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use HTML Formatter
Paste into HTML Formatter, tweak options, and copy the output. Formatting and conversion run in the browser for this tool.
Tips for better results
Keep a backup of original input before bulk transforms. Invalid input should show an error instead of silent corruption.
Privacy and offline-friendly processing
Whenever possible, HTML Formatter processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Does it fix broken HTML?
It reformats well-formed markup; severely malformed HTML may not indent perfectly.
Is inline JavaScript or CSS affected?
Script and style block contents are preserved as-is, not reformatted.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is HTML Formatter free to use?
Yes. HTML Formatter is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does HTML Formatter work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.