Text, Data & Code tool
Code Beautifier
Make code easier to read with consistent indentation and line breaks. Compare the original and formatted code, then copy or download the result privately in your browser.
Untangle your code.
Consistent indentation and line breaks, without running your code. Everything is processed in this browser.
Line width is a guide, not a hard limit. Formatting may also standardise quotes and punctuation. Embedded scripts and styles inside HTML are left unformatted.
0 / 200,000 characters
This is a formatter, not a security checker, compiler or minifier. Your source is never executed or rendered as a webpage. No code is uploaded or saved by this tool. Need JSON? Use the JSON Formatter.
Processed privately in your browser — your entries are not uploaded.
Good to know
How this tool works
Paste code, choose its language and formatting options, then press Format code. Your original stays unchanged beside the output. Review the result before copying or downloading it. Processing stops after ten seconds if necessary.
Frequently asked questions
What is Code Beautifier useful for?
Format JavaScript, TypeScript, HTML and CSS without running it. Validate a small sample before processing important data, and keep a copy of the original input.
Is my information stored?
Your text is processed locally in a browser worker. It is not uploaded by this tool or saved in browser storage. Clear releases the working input and result. Downloads remain in your normal download folder.
Does formatting make code safe or fix bugs?
No. This tool formats code without executing it. It is not a security scanner or compiler. Formatting can normalise quotes and punctuation; review and test your code before replacing the original.
Which languages and sizes are supported?
JavaScript, TypeScript, HTML and CSS, up to 200,000 input characters and one million output characters. Embedded code inside HTML is not formatted. Syntax errors are reported without changing your input. The output preview is limited to 100,000 characters; downloads and copying include the full result.
Which formatter is used?
We use the pinned browser version of Prettier with bundled parsers, without loading user configuration or plugins. This is formatting, not minification or conversion between languages.