JavaScript Formatter and Minifier
Featured
Pretty-print or minify JavaScript in one panel—switch modes on the same input.
- On your device
- No signup
Private on your device
Your information stays on your device and is not uploaded.
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Format messy or minified JavaScript into readable code. Choose 2-space, 4-space, or tab indentation. This page beautifies only—use JS Minifier to compress or JavaScript Formatter and Minifier for both operations.
How to use this tool
Paste JavaScript into the input editor. Formatted output updates as you type. Copy the beautified code for review, debugging, or documentation. Use JavaScript Formatter and Minifier to switch between format and minify.
Worked example
Example: `const x={a:1,b:2};function sum(a,b){return a+b}` becomes a multi-line script with indented object properties and a readable function body.
How it works
Opens the JavaScript Formatter in format mode. Expands minified or messy scripts into readable indentation with consistent braces and line breaks. Choose 2-space, 4-space, or tab indentation.
Limitations
Formatting only—does not minify, validate beyond the formatter, or obfuscate. Use JavaScript Formatter and Minifier to switch between format and minify.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
Does this minify JavaScript?
No. JS Beautifier formats code for readability only. Use JS Minifier to compress or JavaScript Formatter and Minifier to switch between both.
Can it fix minified one-line scripts?
Yes. Paste minified JavaScript and copy the expanded output with consistent indentation.
Is my code uploaded?
No. Everything stays on your device.
Related pages
- Formatters — compare developer tools and read FAQs
- Browse all free online tools on Utilnivo
- Explore more developer tools on Utilnivo
- JavaScript Formatter and Minifier — Pretty-print or minify JavaScript in one panel—switch modes on the same input.
- JS Minifier — Compress JavaScript—strip comments and whitespace with byte savings shown.
- HTML Formatter and Minifier — Format or minify HTML markup on your device.
- JSON Formatter — Format, minify, and validate JSON with optional key sorting.
- CSS Formatter and Minifier — Pretty-print or minify CSS in one panel—switch Format and Minify anytime.
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