Online JavaScript Formatter
Format JavaScript with consistent indentation and spacing; readable modern JS.
Loading tool...
How to use
- Paste or type your input in the left editor
- Adjust options in the toolbar if available
- Copy or download the output from the right pane
This free online tool runs entirely in your browser. No sign‑up, no server uploads.
About Javascript Beautifier
Format JavaScript with consistent indentation and spacing; readable modern JS.
Use the left editor to enter your data. The output updates in real time. You can copy, clear, download, or expand either pane.
Use this developer utility for everyday tasks like debugging, formatting, validation, and conversion. It’s a privacy‑friendly JavaScript tool that can work offline after the first load.
Tip: Use the search bar to quickly switch between tools.
Sample JavaScript
function greet(n){return "Hello, "+n}Example input shown above. Output appears in the right pane instantly.
Why this tool?
| Feature | Javascript Beautifier | Typical alternatives |
|---|---|---|
| Free online tool | Yes | Often yes |
| Client‑side only (privacy) | Yes | Varies |
| No sign‑up required | Yes | Varies |
Explore related tools
Looking for more? Browse All tools or check categories like Beautifier, Minifier, and Validators.
Related tools
FAQs
What is Javascript Beautifier?
Javascript Beautifier is a free, browser‑based tool. Your data never leaves your device.
How do I use Javascript Beautifier?
Paste or type in the left editor. The right pane updates instantly. Use the toolbar to open, save, copy, clear, and go fullscreen.
Can you show an example?
Minification removes whitespace and shortens names; beautification adds consistent formatting.
Are my files uploaded to a server?
No. Processing happens locally in your browser (client‑side only).
What are the limits?
Large inputs work best in modern desktop browsers. For very large files, consider splitting input or using Web Workers in a desktop environment.
What shortcuts are supported?
Use Ctrl/Cmd+F for Find, Ctrl/Cmd+C to copy, Ctrl/Cmd+V to paste. The toolbar also exposes these actions.
How can I share the result?
Click copy to clipboard or save to download a file. You can also share the page URL.
Is Javascript Beautifier really free?
Yes. Javascript Beautifier is a free online tool for developers and runs without sign‑up.
Who uses this tool?
Developers, QA engineers, students, and data analysts use this developer utility for daily tasks.