MessagePack Converter
What is a MessagePack Converter?
Encode JSON objects into compact MessagePack (`msgpack`) binary hexadecimal payloads, and decode raw MessagePack binary hex bytes back into readable JSON.
Why Use This Tool?
- High-Performance Microservices: Inspect compact MessagePack binary payload traffic sent between gRPC or Redis microservices.
- WebSocket Efficiency Testing: Test MessagePack payload size savings compared to raw JSON strings over WebSockets.
- Game Networking Protocols: Debug compact MessagePack network state packets in multiplayer online games.
How to Use
- Paste MessagePack Hex string (e.g. `81a47370616da465676773`) or JSON object.
- Select Mode: "Decode MsgPack to JSON" or "Encode JSON to MsgPack".
- View parsed JSON or converted MessagePack Hex bytes.
Real Working Example
Input:
MessagePack Hex: 81a47370616da465676773
Output Result:
JSON Result:
{
"spam": "eggs"
}
Payload Size: 11 Bytes (approx. 20% smaller than JSON)
Important Technical Details & Specifications
- Official MessagePack Specification: Full support for msgpack types (fixint, fixmap, fixarray, fixstr, bin, ext, float32, float64).
- Byte Comparison Metrics: Displays exact byte count comparison between raw JSON string vs compact MessagePack binary.
- 100% Client-Side Engine: Fast local execution in browser memory.
Related Data & Format Tools
- CBOR Converter: Convert CBOR binary hex to JSON.
- Protobuf Decoder: Decode raw Protobuf wire hex.
- Bencode Converter: Convert Bencode data to JSON.
Frequently Asked Questions
What is MessagePack (msgpack)?
MessagePack is an efficient binary serialization format that looks like JSON but is faster and much smaller.
How much smaller is MessagePack than JSON?
MessagePack is typically 20% to 50% smaller than JSON because integers and field names are binary packed without quotation marks or whitespace.
Is it free?
Yes, 100% free.
Are my MessagePack payload hex strings uploaded to a server?
No, all encoding and decoding runs 100% locally in your web browser.
Can MessagePack handle binary buffer data?
Yes, MessagePack natively supports raw binary byte arrays (bin type).
Is MessagePack compatible with JSON data structures?
Yes, MessagePack supports objects, arrays, strings, integers, floats, booleans, and nulls.