DevReflex - Developer Toolbox

A sleek developer toolbox: generators, converters, formatters, encoders, testers and more - in a full-screen overlay on any page.

DevReflex: Developer Toolbox The developer tools you reach for all day, one keystroke away, on any page. DevReflex puts a full set of everyday dev utilities behind a single shortcut (Alt+Shift+D). Press it on any website and a sleek, full-screen toolbox glides open right over the page. Generate an ID, format some JSON, diff two blocks of text, decode a JWT, check a color's contrast, encrypt a string, then dismiss it and you're back where you were. No new tab, no context switch, no hunting for that one sketchy online tool you bookmarked years ago. Why install it • Always there: works on top of whatever page you're on, so you never break your flow. • Fast: opens instantly with a keyboard shortcut and a smooth, native-feeling animation. Press Ctrl/Cmd+K to jump to any tool or run a quick action. • 100% private: everything runs locally in your browser. No data ever leaves your device, no accounts, no tracking. • Minimal permissions: the only thing DevReflex stores is your theme preference. • Beautiful: a glassy "Deep Ocean" UI with full light and dark modes that follow your system. What's inside Generators • UUID, NanoID & ULID • Epoch / Unix timestamp converter • Hashing: MD5, SHA-1, SHA-256, SHA-512 • Color tools: HEX / RGB / HSL with shades • Gradient builder • Lorem Ipsum generator • Secure password generator • Cron expression explainer with a next-run preview • QR code generator (SVG / PNG) Converters • Number base converter • Date converter • CSV ⇄ JSON • JSON → Table • JSON ⇄ YAML • TOON • Unit converter: data, duration, length, mass, temperature Formatters • JSON, SQL, XML & general code formatting Text utilities • Case converter: camelCase, snake_case, kebab-case and more • Line tools: sort, dedupe, trim, reverse, number, shuffle • Text stats: word, character & line counts, reading time • Escape / Unescape • Markdown preview • Text comparison (merge-capable diff with change navigation) Encoders & decoders • URL encode / decode • Base64 (UTF-8 safe, standard & URL-safe) • HTML entities Web • URL parser: parts and query string • CIDR / subnet calculator • HTTP status code reference CSS • Box shadow generator • Cubic Bézier easing editor • Color contrast checker (WCAG) Testers • Regex tester • JSON Path tester • JWT debugger: decode and verify signatures Crypto • AES & DES (symmetric) • RSA • HMAC • Bcrypt: hash and verify passwords More • JSON Viewer (collapsible tree) • JSON Schema • Image compressor Little touches: many tools include built-in guidance on which option to pick, and you can send one tool's output straight into another. Open DevReflex, do the thing, get back to building.