What is the JS Beautifier?
The JS Beautifier is part of the ABD Web Tools Developer Tools collection. Its job is simple: clean up minified JavaScript. Instead of juggling desktop apps, browser extensions or paid subscriptions, you open one page, format what you have and get a usable result immediately.
Everything runs locally in your browser, so your data never leaves your device. There are no daily limits, no accounts to create and no hidden upsells — the tool behaves exactly the same on your first visit and your thousandth.
How to use the JS Beautifier
- 1Open the JS Beautifier page — it loads instantly and works on desktop, tablet and mobile.
- 2Add your code, data or configuration using the input area above (paste, type or upload, depending on the tool).
- 3Adjust any available options so the output matches exactly what you need.
- 4Review a formatted, validated result as it updates, then copy, download or share it in one click.
Key features
Completely free, forever
No account, no credit card, no trial period and no watermark on anything you produce.
Private by design
Everything runs locally in your browser, so your data never leaves your device.
Instant results
Output updates as you work, so you can validate your input and see the effect straight away.
Works on every device
A responsive interface with dark mode, keyboard shortcuts and accessible controls on phones, tablets and desktops.
Copy, download or share
One-click actions let you move your result into the next step of your workflow without retyping anything.
Part of a developer tools suite
Jump straight to related developer tools on ABD Web Tools when your task needs more than one step.
Who uses the JS Beautifier?
- Debugging an API response during development
- Formatting minified output so it is readable again
- Validating data before committing or deploying it
- Generating test data or boilerplate quickly
Tips for the best results
- Start with a small sample of your code, data or configuration to confirm the settings are right, then run the full job.
- Keep an original copy of your source file or text so you can always go back and try different options.
- Bookmark this page — the JS Beautifier is free to use as often as you like, with no queue or usage cap.