Code Lab · Bench
Code Beautifier
Format JS, CSS & HTML
Input
Beautified
About this bench
About Code Beautifier
Format and indent messy JavaScript, CSS and HTML so it's clean and readable again.
Input
Paste the code or structured data you want to inspect, format, convert or validate.
Result
A local validation, transformation or copy-ready result based on the selected options.
Limits
This bench does not execute or deploy your project. Validate generated output in the real target environment before production use.
How to use Code Beautifier
- 01Paste your code into the box above.
- 02Pick the language (JS, CSS or HTML).
- 03Beautify to reformat with proper indentation.
- 04Copy the formatted code.
Frequently asked questions
Is my code uploaded?
Nothing is uploaded. This tool runs entirely in your browser, so your data is processed on your own device and never sent to a server.
Is it free?
Yes — it is free with no sign-up, no watermark and no account-based quota. Your browser, device memory and the bench's stated file limits still determine how much it can process at once.
Which code types can it beautify?
Choose JavaScript, CSS or HTML, then the formatter adds consistent indentation and line breaks for that language.