Decode protobuf bytes from hex, Base64 or a file into fields and wire types, in your browser.
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About this tool
Paste protobuf bytes as hex or Base64, or open a binary file, to see each field number, its wire type and the ways a number could be read. Nested messages and gRPC frames are recognised.
Without a .proto file the field names are unknown, and what a length-delimited field holds is only a guess. Input is limited to 1 MB, and nothing is uploaded.