Output appears here...Why JS Minifier
- Full terser-based minification: compress + mangle.
- Reports byte savings.
- Runs entirely in your browser.
Common questions
Is JS Minifier free to use?
Yes. JS Minifier is completely free. There is no sign up, no trial, and no usage cap.
Do I need an account to use JS Minifier?
No. You can start using JS Minifier straight away. We do not ask for an email address or a login.
Is my data uploaded to a server when I use JS Minifier?
No. JS Minifier runs entirely inside your browser, so the code or data you enter never leaves your device and nothing is sent to us.
Do you store the code or data I use with JS Minifier?
No. Because everything happens locally in your browser, there is nothing for us to store. Close the tab and it is gone.
Can I paste minified or messy code into JS Minifier?
Yes. JS Minifier handles compact, minified, or untidy input and processes it the same way.
Does JS Minifier flag errors in my input?
Where it applies, JS Minifier points out where something looks invalid so you can fix it quickly.
How do I use JS Minifier?
Enter or paste your code or data and JS Minifier updates the result as you go. When it looks right, copy or download it with one click.
Does JS Minifier work on phones and tablets?
Yes. JS Minifier is responsive and works in any modern browser on mobile, tablet, and desktop.
Which browsers does JS Minifier support?
It works in current versions of Chrome, Firefox, Safari, and Edge. For the best experience, keep your browser up to date.
Is there a limit on how often I can use JS Minifier?
No. You can use JS Minifier as many times as you need, at no cost.
Can I use JS Minifier for commercial or client work?
Yes. You are free to use the output in personal, educational, and commercial projects.
Why is JS Minifier free?
The site is supported by advertising, which lets us keep every tool free and open to everyone.
What should I do if JS Minifier gives an unexpected result?
First check that your code or data is formatted as expected. If something still looks wrong, use the feedback link on the page and we will take a look.