Playground
Tools, not just references
Standalone utilities you'd otherwise open a separate tab for — decode, verify, and compute, all client-side.
🔑
JWT Decoder
Inspect a token’s header and payload, check expiry, and verify HMAC signatures.
⏰Cron Expression Parser
Turn a cron expression into a plain-English description and its next 5 run times.
🔐Webhook Signature Verifier
Compute or check an HMAC webhook signature and get a ready-to-run curl command.
🐳Docker Run Builder
Ports, env vars, volumes, container name — get the exact docker run invocation.
🎭Playwright Codegen Builder
Build a playwright codegen command for TypeScript or Java without the flag lookup.
☕JSON to Java POJO
Paste a JSON response, get a Jackson/Gson/Lombok class, a builder, and a REST Assured snippet.