MessagePack and JSON Workbench
Encode JSON as MessagePack hex or decode a compatible binary document.
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How to use MessagePack and JSON Workbench
Encode JSON as MessagePack hex or decode a compatible binary document. Only a faithful JSON-compatible subset is accepted: finite safe numeric values, strings, booleans, null, arrays and string-key objects. Binary values, dates, extension tags and unsafe integers are refused.
- Provide the input and select the documented mode or options.
- Run the tool and review its result and any limits reported below.
- Copy the text result or download a separate output file.
Good to know
- 100,000 input characters;10,000 values;40 nesting levels. Output is hexadecimal text.
- Object order and binary encoding may change after a round trip. Arbitrary extended binary types are outside this workbench.
- Processing happens in this browser tab. Inputs and results are not automatically saved or uploaded.
Common questions
What does MessagePack and JSON Workbench process?
Only a faithful JSON-compatible subset is accepted: finite safe numeric values, strings, booleans, null, arrays and string-key objects. Binary values, dates, extension tags and unsafe integers are refused.
What happens to my original input?
The tool creates a separate result. Selected files and pasted data remain on this device; inspect the result before using it in another system.
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