Changelog

2026-08-14

Install the viewer like an app. Install it from your browser and it opens from the dock or start menu, in its own window, with no address bar and no tab to lose. Installing and Offline
It works with no connection. The viewer's own program files are cached on first visit, so it starts and runs offline. Local files open on a plane or behind a firewall exactly as they do online. Remote URLs still need a network, for obvious reasons. Installing and Offline
Your images are never cached. Only the program is. Image data is read on demand and never written to the offline cache, by design.

Inverted display got consistent rules. INV swaps white and black, and only those: every other channel colour keeps its hue. The canvas background follows the toggle, and channel swatches show the colour that actually lands on the page. Channels
Contour rendering is much faster on chunked masks. Label chunks are now read aligned and cached, so outlining no longer multiplies decompression work. Toggling contour, fill or colours reuses cached data instead of re-reading it. Labels
Improved Contour rendering for large images when zoomed out. The black outline fades into the fill where objects get too small to hold it, so a plate overview shows coloured objects instead of a black mass.
Clear All Data now clears everything, including annotation templates and UI preferences, and the confirmation lists exactly what goes before you commit.

Analytics and phenotyping. Attach a measurements table to a segmentation, colour objects by any column, filter by value, then group them into named phenotypes. Analytics and Phenotyping
Annotations and templates. Draw and measure regions in real units. Classify them with reusable colour, class and shortcut templates, and export as CSV or GeoJSON. Annotations · Annotation Templates
Documentation. Fourteen guides with screenshots, plus a published spec for the analytics data format so other tools can emit something the viewer reads. Guides · Analytics Data Format