Group picture and icon
What are the details of how an uploaded file is cropped and reformatted to become the group picture and then cropped and reformatted again to become the group icon? Does the transparent background make any difference? Does PPI make any difference? I see that they end up being about 200x146 and 48x48. I have tried to add extra background to the image on the left side thinking that it would preserve the part of the left side I needed from some kind of centering and cropping but it still seems to suffer the same fate. I also tried to format it as a 200x 200 square so it could simply be resized to 48x48. It still lost the left side. I was using PNG.
Transparent backgrounds should be preserved.
You can see the images the system produced from my upload at:
http://www.zotero.org/static/images/settings/group/13068_200px.png
http://www.zotero.org/static/images/settings/group/13068_squarethumb.png
I would like to know what the system does to process the images I upload. If I knew the specifics I could perhaps tweak the uploaded image for the best result from the group picture and the icon images.
Thanks
For the large version, it scales to 200px wide and whatever height that corresponds to. For smaller version it finds the largest square it can and takes it out of the middle section of the larger of width or height, then scales that square down.
Thanks much.