Minify JavaScript

Paste your JavaScript and get a minified version with whitespace and comments removed to reduce file size and speed up page loads. JavaScript is compressed with Terser.

The whole process is client-side — nothing is uploaded and there's no account — so you can minify assets privately and instantly.

Need another language or mode? See all formatters and minifiers.

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JavaScript Minifier — frequently asked questions

How do I minify JavaScript?
Paste your JavaScript into the left panel and the minified result appears on the right instantly. Copy it or download it as a file.
How is the JavaScript minified?
Your JavaScript is compressed with Terser, which removes whitespace and comments and shortens the code while keeping it functionally identical — the standard tool for the job.
Is my code uploaded anywhere?
No. Formatting and minifying run entirely in your browser with JavaScript — your code never leaves your device. It's free with no sign-up; a single unobtrusive ad slot covers hosting.

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