Developer
JavaScript Formatter and Minifier
- Browser-based
- No signup
Paste JavaScript and choose Format for readable indentation or Minify for a compact script. Both modes run in your browser on the same input—useful when you alternate between debugging tidy code and shipping smaller files.
100% Client-Side
Your data never leaves your computer.
How to use this tool
Paste your script into the JavaScript input area. Choose Format for readable code with your preferred indent, or Minify for a compact version. Copy the output when done—you can switch modes on the same input without reloading.
Worked example
Example: `function add(a,b){return a+b}` formats to a multi-line function with indented braces. Minify collapses it back to a single line for smaller file size.
How it works
Paste JavaScript and toggle between Format and Minify in a single interface. Format uses js-beautify for readable indentation and line breaks. Minify applies a conservative pass that removes comments and safe whitespace without renaming variables or mangling code.
Limitations
Minify is a conservative whitespace pass—not Terser, UglifyJS, or a bundler. For format-only or minify-only workflows, use JS Beautifier or JS Minifier.
Privacy and file handling
Your data is processed in your browser and is not uploaded to our server.
Frequently asked questions
How is this different from JS Beautifier or JS Minifier?
This page combines Format and Minify in one tool. JS Beautifier formats only; JS Minifier compresses only with size stats.
Is minify a full production bundler?
No. Minify removes comments and safe whitespace—it does not mangle names, tree-shake, or bundle modules like Terser or Webpack.
Is my JavaScript stored?
No. Processing runs locally in your browser.
Related tools
Related pages
- Formatters — compare developer tools and read FAQs
- Browse all free online tools on Utilnivo
- Explore more developer tools on Utilnivo
- JS Beautifier — Beautify JavaScript with readable indentation—formatting only, no minify.
- JS Minifier — Compress JavaScript—strip comments and whitespace with byte savings shown.
- HTML Formatter and Minifier — Format or minify HTML markup in your browser.
- CSS Formatter and Minifier — Pretty-print or minify CSS in one panel—switch Format and Minify anytime.
- JSON Formatter — Format, minify, and validate JSON with optional key sorting.
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