Developer Tools Lab

The ultimate free tool for OpenClaw AI: Deployment guides, platform downloads, and an interactive configuration wizard.

Advanced web performance laboratory. Audit LCP, CLS, and technical SEO with official Lighthouse and Deep Scrape engines.

Decode and inspect any JSON Web Token. View header, payload, signature, and expiry status instantly.

Encode or decode Base64 strings instantly. Supports URL-safe Base64, UTF-8 text, and file uploads.

Live JavaScript regex playground with highlighted matches, capture groups, named groups, and presets.

Convert HEX ↔ RGB ↔ HSL with native picker, CSS variable / Tailwind output, and WCAG contrast scoring.

Create high-quality, customized QR codes for any website or text instantly.

Instantly convert sample JSON data into valid Zod validation schemas.

Configure and export GitHub repository ruleset JSON files for branch protection.

Get real community fixes and expert insights for common JS, TS, and Next.js errors.

Build cron expressions visually with presets, human-readable descriptions, and next-run preview.

Generate bulk v4 UUIDs instantly with format options, copy support, and RFC 4122 compliance.

Create strong, secure passwords with customizable options, strength meter, and entropy analysis.