JavaScript Formatter
Paste JavaScript or JSX to format it with consistent indentation, spacing and line breaks — handy for reading minified bundles or tidying snippets.
Loading the JavaScript Formatter…
How to use the JavaScript Formatter
- Paste your JavaScript into the input panel, drop a file onto it, or load the sample.
- The formatted result appears on the right as you type. Change the indent size at any time.
- Copy the result or download it as a file. Press Ctrl/⌘ + Enter to format immediately.
Features
- Supports modern ES syntax and JSX
- Prettier-style output from a WebAssembly formatter
- Respects your chosen indent size
- Formats as you type
- Copy, download and drag-and-drop file support
- Remembers your last input on this device
- Light and dark themes
Frequently asked questions
Is my data uploaded to a server?
No. Everything runs locally in your browser. Your input never leaves your device, so it is safe to use with private or proprietary data.
Is Formatter free?
Yes. Every tool is free to use with no sign-up and no limits. A few ads around the tools keep the site running; they never appear inside the editors.