Developer Tools
Format JSON, decode JWTs, test regex, build cron expressions, minify code.
JSON Formatter & Validator
Pretty-print, minify and validate JSON with line-accurate error messages.
JWT Decoder
Decode a JWT token to view its header, payload and expiry — client-side only.
Regex Tester
Test regular expressions with live match highlighting and group capture.
Cron Expression Builder
Build cron expressions for Unix, Kubernetes, AWS EventBridge and Quartz — with a human-readable description and the next 5 run times.
AWS EventBridge Cron Generator
Generate 6-field AWS EventBridge cron expressions, see the next UTC run times, and copy ready-to-paste CloudFormation, Terraform and CLI snippets.
Kubernetes CronJob Schedule Generator
Build Kubernetes CronJob schedule strings, preview the next runs, and copy a complete CronJob YAML manifest.
HTML / CSS / JS Minifier
Minify HTML, CSS and JavaScript to reduce file size for production.