# OME-Zarr **Domain:** Bioimaging / Neuroinformatics **Doc Type:** Technical Standard Node **Maturity:** Community Specification **Related:** [[Zarr]], [[SpatialData]], [[Connectomics]], [[Multiscale Image Pyramid]] --- ## Definition **OME-Zarr** is the Open Microscopy Environment's Next-Generation File Format for multidimensional bioimaging data stored with Zarr. It standardizes metadata for axes, multiscale resolution levels, physical coordinates, transformations, labels, and related image structures. ## Architectural role OME-Zarr permits large volumetric datasets to be traversed at several resolutions and accessed in chunks. This is crucial for microscopy and connectomics, where a complete image volume may be too large to move or render as one object. ## Primary source - [OME-Zarr specification](https://ngff.openmicroscopy.org/0.5/index.html)