Image Size Specifications
Images must be cropped or resized to fit one of the following standard image sizes. A useful, FREE Web based tool for image sizing and optimization is pixlr.com
Three Column Layout - Center Well
There are two widths for images used in pages with the three column layout.
If you're adding an image to the center well, it should be a maximum of 420 pixels wide. An optimal weight is 20-30k.
Three Column Layout - Right Column
If you're adding an image to the right column, it should be a maximum of 160 pixels wide. An optimal weight is 15-20k.
Two column layout
The maximum width of an image added to the content well on a page using the two column layout is 599 pixels. An optimal weight would be 40-50k.
Widgets are used in the right column of the three column layout. Widgets should be a maximum of 160 pixels wide. Height is flexible, but the optimal weight is 15-20k.
Thumbnail images are found on directory pages, normally using the Bulleted List Element They are 100 pixels wide by 60 pixels tall. The optimal weight for thumbnail images is 5-10k.
The tiny images used for thumbnails in blog posts are 65 pixels wide by 45 pixels tall. They should weigh 5k or less.
Creating rounded corners on your images is optional. Use a radius of 5 pixels.