OME-Zarr Viewer
Your microscopy data, in the browser.
A free OME-Zarr viewer that runs entirely in your browser. Drag a local file, paste a URL, or share a deep link with your team. Works with multi-channel stacks, HCS plates, and terabyte-scale volumes.
How it works
Three steps, no setup.
Open
Drag a local file or paste a URL. No upload, no account.
Explore
Multi-channel, Z-stacks, HCS plates, annotations.
Share
Copy a URL that captures your exact view and send it.
Features
What you get.
No install
Works in any modern browser. Open a file and start exploring.
Your data stays local
Nothing is uploaded anywhere. Files are read directly in your browser.
OME-Zarr native
v0.4 and v0.5, including sharded stores and HCS plates.
Multi-channel
Custom colors, per-channel histograms, and one-click auto-contrast.
Share with a link
Copy a URL that captures your exact view: zoom, channels, colors.
GPU accelerated
deck.gl WebGL tile rendering for smooth navigation at any scale.
For real workflows
Built for the data you actually have.
Microscopy is messy. Plates, stacks, time series, segmentations, annotations. The viewer handles all of it.
High-content screening
Navigate plates like a map: from overview to well to cell. HCS is a first-class citizen, not bolted on.
Massive images
GPU-accelerated multi-resolution rendering handles 144K x 93K pixel images smoothly.
Segmentation overlays
Load label images alongside raw data. Toggle, color, and adjust opacity.
Z-stacks and time series
Scrub through Z, T, or both. Project or slice as you need.
Annotations
Draw shapes, tag regions, export to CSV or GeoJSON.
Analytics overlays
Color cells by measurement. Drop in a CSV and visualise the results.