A fragility & dead-class report for your CSS.

Paste a stylesheet and see the brittle bits at a glance — !important pileups, runaway specificity, deeply nested selectors, and classes nothing renders. Everything is computed locally; nothing is uploaded.

StylesheetPaste any CSS — it never leaves your browser.

MarkupOptional — add HTML or JSX to find classes nothing uses.

Your report appears here

Paste a stylesheet on the left (or hit Load example) to see its fragility grade and dead classes.