JavaScript Formatter
Format and beautify JavaScript code. Free online JS formatter for cleaner, more readable scripts.
Everything runs in your browser. Your input is not sent to a server. Previews run in an isolated sandboxed frame and only when you press Run Preview.
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How to use the JavaScript Formatter
- Paste JavaScript source code.
- Run Format / Beautify.
- Copy the indented output.
- Resolve syntax errors if formatting fails.
How it works
The formatter parses (or heuristically indents) JavaScript and reprints it with consistent spacing and line breaks. It is not a linter or bundler.
Helpful for reading minified snippets and preparing examples.
Examples
- Minified one-line functions expand to multi-line indented form.
- Object and array literals gain readable structure.
- Syntax errors may block full formatting until fixed.
JavaScript Formatter FAQ
Does this minify code?
No. This tool beautifies (expands) code for reading.
Is code executed?
No. Formatting is text-only in your browser.
Is the JavaScript Formatter free?
Yes.
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