JavaScript Formatter

Pretty-print or lightly minify JavaScript in your browser — no uploads.

100% In-Browser & Private — your data never leaves this device

PeachTools Pro

Batch processing, unlimited files, ad-free.

Join waitlist
Loading tool...

How to use the JavaScript Formatter

  1. Paste JavaScript source.
  2. Choose Pretty print or Minify.
  3. Copy or download the result.

FAQ

Is this a full production minifier?
Pretty print uses a beautifier. Minify is a lightweight whitespace/comment pass — not a bundler-grade compressor.

Related tools

More private, in-browser utilities you might need next.

JSON Formatter
Pretty-print, minify, or explore JSON in a collapsible tree — instant validation, 100% in your browser.

developer

HTML Formatter
Beautify or minify HTML markup online — private, fast, and fully client-side.

developer

CSS Formatter
Pretty-print or minify CSS online — fast, private formatting with no uploads.

developer

Looking for more? Browse all developer tools · All tools