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JavaScript Minifier

Paste your JavaScript and get a minified version instantly. Removes comments and unnecessary whitespace.

Also known as: minify js, js minifier online, minify javascript

Your files stay private — all processing happens in your browser.
This tool performs basic minification: removing comments and unnecessary whitespace. For production use with variable renaming and dead code elimination, use build tools like Terser or esbuild.

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Ctrl+V to paste · Ctrl+Enter to convert

What is JavaScript Minifier?

JavaScript Minifier is a free, browser-based tool that lets you paste your JavaScript and get a minified version instantly. Removes comments and unnecessary whitespace. No signup is required, and no files are uploaded to any server — all processing happens locally in your browser using JavaScript. This tool is also commonly referred to as minify js, js minifier online, minify javascript.

How it works

1

Upload or paste

Add your file or paste your content

2

Convert instantly

Processing happens in your browser

3

Copy or download

Get your result instantly

Frequently asked questions

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