JavaScript Beautifier
Format and re-indent messy or minified JavaScript.
Beautify JavaScript Code
This beautifier re-indents JavaScript based on its bracket structure, expanding blocks and statements onto their own lines. Strings, template literals, regular expressions, and comments are preserved verbatim so your code's meaning never changes.
Formatting applied
- Blocks expanded with consistent indentation
- Statements placed on separate lines
- for(;;) loops kept on a single line
- Strings, regex, and comments preserved
Read minified code
Paste a minified bundle or a one-liner and instantly get a readable, indented version you can study, debug, or learn from.
A readability tool
This beautifier focuses on indentation and block structure rather than full reformatting, which keeps it fast and safe. For opinionated, project-wide formatting, tools like Prettier are ideal â but for a quick, reliable cleanup of a snippet, beautifying in the browser is the fastest path.
100% Private & Processed Locally
Every conversion on this page runs entirely inside your browser using JavaScript. Your data is never uploaded to a server, logged, or stored â making this tool safe even for sensitive payloads such as API responses, configuration files, and access tokens.
Because there is no network round-trip, conversions are instant and work even when you are offline. It is free to use with no sign-up, no rate limits, and no ads injected into your output.
Frequently Asked Questions
Common questions about the JavaScript Beautifier.