LLM API Cost Calculator
Compare monthly API costs across OpenAI, Anthropic, Gemini, and DeepSeek.
CSS Minifier
Shrink stylesheets by stripping whitespace.
⟨/⟩ Embed this tool on your site
Paste this into any page — the live tool appears with a credit link back here.
✏️ Sketching your tool…
Sponsored: Recommended offer →
About CSS Minifier
Remove comments and whitespace to shrink CSS to its smallest form, with before/after sizes.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: Css Minifier on Wikipedia. More: all developer tools.
Frequently Asked Questions about CSS Minifier
How do I use the CSS Minifier?
Open the CSS Minifier and use the controls in the workspace below: shrink stylesheets by stripping whitespace. Results appear instantly in your browser, with nothing to install, sign up for, or pay for.
Is the CSS Minifier free?
Yes. The CSS Minifier is completely free, like every tool in the PrimeFreeTools library. There are no accounts, subscriptions, or usage limits.
Does the CSS Minifier store or share my data?
No. The CSS Minifier runs with JavaScript in your browser, so what you enter never leaves your device and nothing is stored on a server.
What can I use the CSS Minifier for?
Remove comments and whitespace to shrink CSS to its smallest form, with before/after sizes. You will find it grouped under Developer Tools together with 78 other free tools on the PrimeFreeTools homepage.
Related Articles & Guides
Sep 8, 2026
CSS Minifier: Shrink Stylesheets the Way Browsers Measure Them
Shrink stylesheets by stripping whitespace.
Read post