CSS Minifier
Minify CSS by removing comments and unnecessary whitespace, compacting selectors and applying safe byte-level optimizations. See the before/after size and copy the result in one click.
Runs 100% in your browserNo signup neededFree forever
Paste CSS and the minifier strips comments, collapses rule whitespace, removes final semicolons and drops unnecessary units and color suffixes. Output updates live with a size comparison.
CSS input
Minified
.card{display:flex;flex-direction:column;margin:0 16px 0 16px;padding:1rem;border-radius:8px;color:#ffffff;font-size:0.875rem}.card:hover{background-color:rgb(47,111,237)}@media (min-width:768px){.grid{grid-template-columns:repeat(3,1fr)}}308 bytes → 239 bytes · saved 69 bytes (22% smaller) · runs locally
Frequently asked questions
Is the minified CSS safe to use?
The optimizations are conservative — spacing, comments, redundant punctuation and trailing zeros are removed. Meaning of the rules is unchanged.
How much size will I save?
Typically 15–40%, depending on how much whitespace and how many comments the original contains.
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