Thumbnails used by Photo of the Day widget
I use the Photo of the Day to load a new random photo from my entire photo collection (4000+ photos) in the sidebar for every page view. My original photos are quite large because my site is a photo archive and the original images need to have a large resolution.
Currently the Photo of the Day widget seems to be generating a thumbnail to display on each page load by processing the original large image, which slows page loading.
Is there a way to make the widget display the stored thumbnail for a particular image rather than generating a new one every time it loads?
I noticed the "Update Thumbnails" button on the widget configuration page - is that what this button does?