Developer Tools
JSON, Base64, URLs, hashes, UUIDs, JWTs and regex — all processed in your browser, so nothing you paste ever leaves your machine.
JSON Formatter
Format, validate and minify JSON — with the error line and column.
JSON Minifier
Strip every unnecessary byte from JSON.
JSON Validator
Check JSON is valid and find the exact line of any error.
Base64 Encoder
Encode text to Base64, with a URL-safe option.
Base64 Decoder
Decode Base64 back to text, standard or URL-safe.
URL Encoder
Percent-encode text so it survives inside a URL.
URL Decoder
Turn percent-encoded text back into readable characters.
HTML Entity Encoder
Escape HTML so it displays as text instead of markup.
HTML Entity Decoder
Turn & < and é back into readable characters.
UUID Generator
Generate UUID v4, ULID or Nano ID in bulk.
Password Generator
Strong random passwords with a real strength estimate.
Hash Generator
SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 at once.
Regex Tester
Test a regular expression and see every match and group.
JWT Decoder
Read a JSON Web Token's header, payload and expiry.
Color Converter
Convert between HEX, RGB, HSL, HSV and CMYK, with contrast checks.
Lorem Ipsum Generator
Placeholder text by paragraph, sentence or word.
URL Parser
Break a URL into its protocol, host, path and parameters.