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orjson is a fast, correct JSON library for Python. It benchmarks as the fastest Python library for JSON and is more correct than the standard json library or other third-party libraries. It serializes dataclass, datetime, numpy, and UUID instances natively. orjson supports CPython 3.8, 3.9, 3.10, 3.11, and 3.12. It distributes amd64/x86_64, aarch64/armv8, arm7, POWER/ppc64le, and s390x wheels for Linux, amd64 and aarch64 wheels for macOS, and amd64 and i686/x86 wheels for Windows. orjson does not support PyPy. Releases follow semantic versioning and serializing a new object type without an opt-in flag is considered a breaking change.
Features
- Serializes dataclass instances 40-50x as fast as other libraries
- Serializes datetime, date, and time instances to RFC 3339 format
- Serializes arbitrary types using a default hook
- Has strict UTF-8 conformance, more correct than the standard library
- Has an option for strict JSON conformance on 53-bit integers with default support for 64-bit
- Does not provide load() or dump() functions for reading from/writing to file-like objects
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JSONLicense
Apache License V2.0Follow orjson
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