🧰 Developer Tools
Format JSON, decode JWTs, test regex, generate UUIDs and more — fast utilities every developer needs, with zero data sent to any server.
JSON Formatter & Validator Beautify, minify and validate JSON with clear error messages. JSON to CSV Converter Convert JSON arrays to CSV/Excel with nested field flattening. Base64 Encoder / Decoder Encode/decode Base64 text (Unicode-safe) and files to Base64. UUID Generator Generate cryptographically secure UUID v4 — single or bulk. JWT Decoder Decode JWT header & payload, check expiry — fully offline. Regex Tester Test regular expressions live with match highlighting & groups. URL Encoder / Decoder Percent-encode or decode URLs and query components. HTML / CSS / JS Minifier Strip comments & whitespace from HTML, CSS and JavaScript. Timestamp Converter Convert Unix timestamps ↔ human dates (local, UTC, ISO).