🗜️CSS Minifier
Minify CSS by removing whitespace and comments.
🆓 Free🔒 Secure⚡ Instant📱 Mobile-friendly🚫 No signup
Minify CSS online for free. Remove whitespace and comments to reduce stylesheet size.
How to Use CSS Minifier — Step by Step
- 1Paste your CSS stylesheet into the input
- 2Click 'Minify' — whitespace, comments, and redundant semicolons are removed
- 3File size before and after is shown
- 4Copy the minified CSS
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Frequently Asked Questions
Is this tool completely free?
Yes. All ToolNest tools are 100% free with no signup required, no account, and no watermarks added to output files.
Are my uploaded files secure and private?
All uploads use HTTPS encryption during transfer. Files are processed on secure isolated servers and automatically deleted within 2 hours of upload.
Does this tool work on mobile phones?
Yes. ToolNest works on any modern browser on iPhone, Android, tablet, or desktop — no app download or plugin needed.
Do I need to create an account?
No. Just open the tool, upload your file, and download the result. No email, no signup, no password.