How to use Protobuf Wire-Format Inspector

Decode field numbers, wire types, varints, fixed values, and bounded length-delimited previews without requiring a schema.

1. Paste, type, or drag and drop a supported text file into the input area.
2. Choose the options that match your intended result.
3. Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.

What the result means

An offset-aware field table and raw wire values.

Privacy and safety

This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.

Limitations

• Everything is processed in this browser tab. Input, filenames, keys, and output are never uploaded or saved. A .proto schema is required to prove signedness, enum names, nesting, packed values, maps, and string-versus-bytes meaning.

Try the included example

Select “Load example” at any time to restore this tested sample.

0A 05 68 65 6C 6C 6F 10 96 01