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JSON Formatter & Validator
Pretty-print, minify and validate JSON, with clear error messages that point to the line and column. -
Base64 Encoder & Decoder
Encode text to Base64 and decode it back, with full UTF-8 support and the URL-safe alphabet. -
URL Encoder & Decoder
Percent-encode text for URLs and decode encoded strings, with a breakdown of a URL’s parts and query parameters. -
UUID Generator
Generate random version 4 or time-ordered version 7 UUIDs with your browser’s secure random generator, and inspect any UUID. -
Unix Timestamp Converter
Convert Unix timestamps in seconds, milliseconds, microseconds or nanoseconds to dates in UTC and your time zone, and back. -
Cron Expression Generator
Build a cron schedule from simple choices or check one you have, with a plain-English explanation and the next run times.
Developer Tools
Format, encode, decode and generate the small things developers handle every day. Everything runs in your browser.