Comparing day to day changes using Arctic satellite images is quite a complicated task. The files are huge, two displays are indispensable and synchronization of zoom level, latitude and longitude a pain. So here at arctic.io the - eventually - first synchronized double-zoom viewer was launched today.

Basically it appears as two zoom windows side by side. There are even two mouse pointers: The white one is yours and the red one points automatically to the same location within the other zoom window. All usual functions are still working. Try out right click to save images, mouse wheel to zoom out or in and click to focus.

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