Minify JavaScript
Compress JavaScript for faster loading
.js
Result
Output
About this tool
Minify JavaScript by removing unnecessary whitespace, comments, and formatting to reduce file size and improve page loading speed. Perfect for production deployments, optimizing website performance, and reducing bandwidth without changing your code's behavior.Available via the API.
Limits
Limited to 10 requests / day when used without registration.Get more when you sign up (it's free) or buy a plan.Plan Free - 100 requests / month
Plan Plus - 1 000 requests / month
Plan Pro - 10 000 requests / month
Plan Max - 30 000 requests / monthLearn more about plans and pricing.
Tips
- Always keep a backup of your original JavaScript code before minification for easier debugging and maintenance.
- Test your minified JavaScript in different browsers to ensure compatibility and functionality remain intact.
- Remove unused or dead code before minification to reduce file size further and avoid unnecessary complexity.
- Combine multiple JavaScript files before minifying to reduce total HTTP requests on your live site.
Frequently Asked Questions
What does minifying JavaScript do?
Minification removes unnecessary whitespace, line breaks, and comments from JavaScript code, and can shorten variable names, without changing how the code behaves.Will minifying break my code?
Minification is designed to preserve functionality. However, you should always test minified code, especially if it relies on specific formatting, comments, or non-standard syntax.Is my code sent to a server?
Yes, the code is sent to our servers to be minified, and the result is returned to your browser. It is not stored after processing.Can I undo minification?
Minification removes formatting information, so the exact original spacing and comments cannot be recovered. Always keep a backup of your original source code.Is the tool free to use?
Yes, you can minify a limited amount of code without an account. Creating an account or upgrading your plan increases your usage limits.