UtilTools

Code Beautifier

Re-indent HTML, CSS, JavaScript, JSON and XML.

Code Beautifier reformats minified or badly indented HTML, CSS, JavaScript, JSON and XML into readable code with consistent indentation and line breaks. It is a formatter, not a compiler — it re-lays-out your code without changing what it does, and it runs entirely in your browser.

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Runs entirely on your device. No file or text you enter here is uploaded. How to verify it.

How to use Code Beautifier

  1. Paste code and pick the language, or let it be detected.
  2. Set indentation size and style.
  3. Copy the formatted code.

Questions about Code Beautifier

Does formatting change behaviour?
No. Only whitespace and line breaks change. The one thing to watch is template literals and multi-line strings, which are left untouched precisely because reindenting them would change their content.
Can it un-minify production JavaScript?
It restores structure and indentation, which makes minified code readable again. It cannot restore the original variable names — those were discarded by the minifier and are not recoverable by anyone.
Why does my code stay on my machine?
Because unformatted code often contains API keys, internal endpoints and unreleased logic. Pasting it into a server-side formatter sends all of that to a third party. This one has no server to send it to.
Which languages does it handle?
HTML, CSS, JavaScript, JSON, XML and SQL. TypeScript and JSX usually reindent correctly because the syntax overlaps heavily, but they are not parsed specifically, so unusual generics or decorators can come out oddly.
Does it work without a connection?
Yes, after the first load. The formatter is JavaScript running in your tab, so it keeps working on a plane or behind a restrictive firewall, and it can be installed as an app for exactly that.
Is Code Beautifier really free, with no limits?
Yes. There is no account, no daily cap, no file-size tier and no watermark, because there is no server cost to recover. The site is funded by clearly disclosed partner recommendations on the Partners page, never by metering the tools.
Are my files or text uploaded when I use Code Beautifier?
No. Everything is processed by JavaScript running in your browser, on your device. You can verify it: open your browser's developer tools, switch to the Network tab, and use the tool. You will see no request carrying your data — because there is nowhere for it to go.