JavaScript Formatter
Turn minified or messy JavaScript into clean, readable code. Paste it in, press Format, and get proper indentation and line breaks — all in your browser, your code is never executed or uploaded.
Input JavaScript
Formatted output
Format some code to see statistics here.
How to use
- Paste your minified or messy JavaScript into the input box.
- Choose your indent size — 2 spaces, 4 spaces, or a tab.
- Press Format. The readable code appears in the output box.
- Copy it or download it as a .js file.
Note: This is a safe text-based formatter. It never runs your code — it only rearranges whitespace.
Tips
- Minified code from one line becomes easy to read in a single click — great for debugging.
- Two-space indentation keeps nested code compact; four spaces makes deep nesting easier to follow.
- The formatter keeps strings and comments intact, even when they contain braces or semicolons.
- Very long single lines may still wrap in the editor — that is only display, the code is unchanged.
Frequently Asked Questions (FAQ)
How does the JavaScript formatter work?
Paste minified or messy JavaScript into the input box and press Format. The tool re-indents the code, puts braces and statements on clear lines, and shows readable output you can copy or download.
Is my code uploaded anywhere?
No. Formatting happens fully inside your browser. Your code is never sent to a server.
Does it run my code?
No. The formatter only reads and re-indents your code. It never executes it, so it is safe to format code from unknown sources.
Can I change the indent size?
Yes. Choose your indent size before pressing Format. You can also copy the output or download it as a .js file.