CSS
Analyse stylesheets: file size, coverage, selector specificity, and duplicate declarations.
Advantages
Byte-level CSS coverage
Precise measurement of used vs unused CSS per file. See exactly how many kilobytes the browser downloads for nothing, and trim your page weight.
Specificity control
Report on min, average, and max selector specificity with the top-10 heaviest selectors. Keeps the cascade predictable and styles easy to maintain.
Duplicates & !important detection
Automatic discovery of repeated declarations and !important overuse. Reduce CSS size without losing functionality.
Full stylesheet map
Overview of every connected file — external and inline — with sizes, types, and coverage percentages. Media queries, vendor prefixes, colours, and fonts in one report.
How it works




Tools
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AccessibilityCSS
Audit CSS usage, file size, and unused selectors.
CSSDesign tokens
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