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2026

Zarrista: Faster Zarr for Python

This blog post was fully written by humans.

We're releasing Zarrista, a new high-performance Python library for interfacing with Zarr data, the pre-eminent open data format for storing chunked N-dimensional arrays. Zarrista is powered by Rust and the Zarrs library.

Advanced Zarr users can start working with Zarrista today, but we plan to integrate it into Zarr-Python, so that all users can benefit from improved performance, without needing code changes.