Developer
UUID Generator
Generate UUID v4 and UUID v7 (also used as an online GUID generator) with bulk copy.
GenerateDeveloper tools
Small developer utilities that run locally in your browser — a JSON formatter and validator, UUID generation, JWT decoding, cron expressions, and a SQL formatter.
Directory
Developer
JWT Decoder
Decode a JWT header and payload to readable JSON in the browser. No signature check, nothing uploaded.
DecodeDeveloper
Cron Expression Generator
Build a standard 5-field cron expression with presets, a human-readable summary, and upcoming run times — all in the browser.
GenerateDeveloper
SQL Formatter
Pretty-print SQL with indentation and uppercase keywords in the browser. Copy the formatted query — nothing uploaded.
FormatDeveloper
JSON Formatter
Validate and pretty-print JSON in the browser with 2 or 4 spaces or tabs, minify, or sort keys. Copy or download — nothing uploaded.
Format