JavaScript Minifier & Compressor

Compress JavaScript by removing whitespace and comments to reduce bundle size for production. 100% browser-based — your code never leaves your device.

input.js
0 ch
output.jsformatted
Ready — paste code or click Sample
What is a JavaScript Minifier & Compressor?
A JavaScript minifier removes whitespace, comments, and unnecessary characters from JavaScript source code to produce a compact file that executes identically to the original. JavaScript bundle size is one of the most impactful factors in web application performance — large JavaScript files block page rendering and delay interactivity. Minification reduces parse and execution time by giving the browser less text to process. PureFormatter's JavaScript minifier handles ES2022+ syntax and processes your code entirely in the browser with no server upload.
How to Use PureFormatter
  1. Paste your JavaScript code into the input panel.
  2. Click 'Sample' to load a demo script.
  3. Click Minify to compress your JavaScript instantly.
  4. The compact, whitespace-free JS appears in the output panel.
  5. Copy the result or Download as a .js file.
Frequently Asked Questions