Developer
Format, encode, hash and inspect data locally.
JSON formatter
Beautify, minify, validate and optionally sort JSON keys. Errors show a line and column.
Base64 encode and decode
Encode or decode text and files as standard or URL-safe Base64.
URL encode and decode
Percent-encode or decode a component, or a full URL that should keep its structure.
JWT decoder
Read a JWT header and payload, and highlight expiry. The signature is not verified.
Hash generator
Compute SHA-1, SHA-256, SHA-384, SHA-512 or MD5 for text or a file.
Timestamp converter
Convert seconds, milliseconds and ISO dates, then show the result in a time zone.
Regex tester
Test a JavaScript regular expression, with flags, match text and groups. A long run is stopped.
Cron explainer
Turn a 5-field cron expression into a sentence and the next UTC run times.
HTML entity encoder
Encode <, >, & and quotes, or decode named and numeric entities.
Number base converter
Convert an integer between any bases from 2 to 36.
Color converter
Convert a color between HEX, RGB and HSL, and preview the swatch.
JSON and CSV converter
Turn an array of JSON objects into CSV, or a headered CSV into JSON.
YAML and JSON converter
Convert YAML to JSON, or JSON to YAML. The preview is text, not a rendered document.