Decoder Tools
2 free decoder tools that run entirely in your browser.
JWT Decoder
Decode and inspect JSON Web Token header and payload.
Protobuf Decoder
Decode raw protobuf wire data without a .proto schema.
About decoder tools
These 2 decoder tools cover the tasks developers reach for most. Each one runs client-side, so your input never leaves your device and every tool works offline after the first visit. No account, no upload, no tracking.