Developer tools
Formatters, encoders, hash generators and other utilities for developers.
5 tools in this category
JSON Formatter
Beautify, validate or minify JSON in your browser — with clear error messages. Nothing is uploaded.
Developer tools
Base64 Encoder and Decoder
Encode text to Base64 or decode it back, UTF-8 safe and URL-safe tolerant. Runs entirely in your browser.
Developer tools
URL Encoder and Decoder
Percent-encode text for URLs or decode it back, with component and full-URL modes. Runs in your browser.
Developer tools
JWT Decoder
Decode a JWT to read its header and payload, with expiry and issued-at shown as dates. Local only — no signature verification.
Developer tools
UUID Generator
Generate random version-4 UUIDs in bulk, with uppercase, braces and no-hyphen options. Cryptographically random, in your browser.
Developer tools