I've mentioned before that the Yale Center for British Art has a fantastic online archive of frames in their collection (see link on right side menu), they now allow the download and open use of very high resolution images of art in their collection, a good number of which also include images of the frame. I think this is a great step forward in showing paintings online (and in catalogues and books) how they look with their frames, instead of just cropping to the image. This is unlike the newly launched Art UK website, which admittedly does an excellent job of making all art held in public collections available online, but all the images are cropped to exclude frames.
A few examples below from the Yale Center for British Art.
