First-view CSS budget
Critical CSS Size Checker
Paste the CSS you plan to inline for the first view. See minified size, selector count, and repeated rules before they delay rendering.
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Critical CSS
Paste extracted or inlined first-view CSS. Analysis runs locally as you type.
CSS stays in this browser. It is not uploaded.
Repeated selectors
The same selector appearing many times usually means overlapping extracts or unmerged components.
No repeated selectors yet.