JavaScript Minifier
Remove whitespace and comments from JavaScript to reduce file size.
How to Use This Tool
- Paste your raw or minified code into the Javascript Minifier input area at the top of the page.
- Adjust formatting options if shown, then watch the Javascript Minifier produce clean, readable output in real time.
- Copy the formatted result to your clipboard and paste it straight into your editor or pull request.
Common Use Cases
- Code review prep: Developers run the Javascript Minifier to normalize formatting before opening a pull request, isolating logic changes from whitespace noise.
- Legacy code cleanup: Engineers tidy minified or inconsistently formatted code so the structure becomes scannable.
- Debugging: Format compressed responses or logs to make field boundaries and nesting visible during incident investigation.
Frequently Asked Questions
What style does the Javascript Minifier apply?
The formatter uses widely accepted defaults: 2-space indentation, line breaks at logical boundaries, and consistent quoting where applicable. Output is deterministic, so running it twice produces identical text.
Does formatting change the meaning of my code?
No. The formatter changes only whitespace and ordering of cosmetic elements; the parsed AST remains identical. Functional behavior, variable names, and value precision are preserved exactly.
Can I minify instead of beautify?
Yes. Toggle the minify option to strip all non-essential whitespace and comments, producing the smallest functionally equivalent output. Useful for production assets where every byte counts in download size.