orjson

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

Project Samples

Project Activity

See All Activity >

License

Apache License V2.0

Follow orjson

orjson Web Site

Other Useful Business Software

Enterprise-grade ITSM, for every business

Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.

Try it Free

Rate This Project