Python bindings for the simdjson project.
Last updated Jun 26, 2026
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pysimdjson
Python bindings for the [simdjson][] project, a SIMD-accelerated JSON parser. If SIMD instructions are unavailable a fallback parser is used, making pysimdjson safe to use anywhere.
Bindings are currently tested on OS X, Linux, and Windows for Python version 3.9 to 3.12.
๐ Documentation
The latest documentation can be found at https://pysimdjson.tkte.ch.
If you've checked out the source code (for example to review a PR), you can build the latest documentation by running cd docs && make html.
๐ Benchmarks
pysimdjson compares well against most libraries. The full benchmarks can be found in its sister project [json_benchmark][].
[simdjson]: https://github.com/lemire/simdjson [jsonbenchmark]: https://github.com/tktech/jsonbenchmark
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