Local Files

Open OME-ZARR data from your local disk without uploading anything.

Drag and Drop

The simplest way to open local data is drag and drop:

1. Open Find Nuclei Viewer
2. Drag your .ome.zarr folder from Finder/Explorer onto the browser
3. Drop it — the viewer opens immediately

Using the File Picker

Alternatively, use the built-in folder picker (Chrome and Edge only):

1. Click Open Image on the landing page
2. Click Open Folder in the Load Data modal
3. Select your .ome.zarr folder
4. The viewer loads your data

Browser Support

The folder picker uses the File System Access API, which is only available in Chrome and Edge. For other browsers, use drag and drop.

Privacy

Your data stays entirely on your machine. Find Nuclei Viewer processes everything locally in the browser — no files are uploaded to any server.

Recent Images

After opening a dataset, it appears in your Recently Opened list on the landing page. Click any recent image to reopen it instantly. Thumbnails and metadata are cached in your browser's local storage.