Category
Frontend tools
Web Vitals, color contrast, CSS specificity, and React hook dependencies.
6 tools · all free
Bundle Size Budget CalculatorBundle size, connection speed, and target load time - is your JS bundle within budget.CSS Specificity CalculatorPaste a CSS selector - IDs, classes, and elements broken down, plus the specificity score.Color Contrast CheckerTwo colors to the exact WCAG contrast ratio, and whether it passes AA and AAA.Core Web Vitals CheckerLCP, INP, and CLS against Google's published thresholds - Good, Needs Improvement, or Poor.React useEffect Dependency CheckerPaste a useEffect/useMemo/useCallback call - identifiers used vs declared deps, mismatches flagged.Browser Bookmarklet GeneratorA small safe preset list, turned into a draggable javascript: bookmarklet.
These answer one question each. ArchSetu answers them for a whole repository.
Call graph, dead code, blast radius and a health score, in about a minute.