Free Tools / JavaScript Beautifier
JavaScript Beautifier
Paste minified or messy JavaScript to get readable, indented output. Runs entirely in your browser — nothing is uploaded or executed.
Paste minified or messy JavaScript to get readable, indented output. Runs entirely in your browser — nothing is uploaded or executed.
This is a lightweight, brace-depth-based formatter. It gives a readable first pass on typical code, and it never runs what you paste.
Expand a minified snippet to see what it does before you add it to a site.
Make a minified stack trace location easier to read.
Braces and semicolons inside strings and comments are left alone.
Style choices are simple. Review the output before committing it.
No. It is pure string processing, and the output goes into a text box only.
No. It formats, it does not validate or repair code.
No. Everything runs locally in your browser.
Upzilla monitors your site and API endpoints after every release.