Developer
Free browser-based tools for developers. JSON formatting, encoding, hashing, and more. Nothing is sent to any server.
5 tools · 8 languages
All Developer
Base64 encoder / decoder
Encode and decode Base64 in your browser with full UTF-8 support. Works for text, emojis, and non-Latin scripts. Private and instant.
Hash generator
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes of any text. Everything runs in your browser — your input never leaves your device.
JSON formatter
Format, validate, and minify JSON in your browser. Pretty-print with 2/4/tab indent, sort keys, and spot errors instantly. Nothing leaves your device.
URL encoder / decoder
Percent-encode and decode URLs with component or full-URL modes. Parse any URL into protocol, host, path, query, and hash. Everything runs locally.
UUID generator
Generate random UUID v4 identifiers in your browser. Standard, no-dashes, or uppercase formats. Bulk generate up to 1000. Cryptographically random.