Advanced Dev Utilities — Free & Private

Protobuf and WebAssembly inspectors, API calculators, ESLint rules, web vitals, SVG to React, email HTML and accessibility audits.

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Tools in Advanced Dev Utilities

Protocol Buffer Inspector: Binary protobuf + `.proto` schema → readable JSON
WebAssembly Inspector: WASM module imports, exports, memory, tables
API Rate Limit Calculator: Rate limit headers → next reset + safe call rate
API Payload Size Calculator: Byte size of JSON/XML payloads + optimization hints
ESLint Rule Explainer: Look up any ESLint rule → plain-English explanation
Docker Image Tag Browser: Fetch public Docker Hub tags via registry API
Web Vitals Budget Checker: Bundle + image + font sizes → LCP/CLS/INP estimate
Color Token Generator: Hex colors → CSS vars / Tailwind config / JSON tokens
SVG to React Component: Raw SVG markup → clean React functional component
HTML Email Tester: Preview HTML email in simulated client view, inline check
HTML Email Signature Builder: Drag-and-drop HTML email signature designer
APCA Contrast Checker: APCA + WCAG contrast; large text + UI component rules
Accessibility Audit Suite: Screen reader sim + focus order + alt text audit + CVD simulator + font spacing + ARIA role reference + touch target checker + reduced motion tester + reading level scorer