Images are thumbnailed to a fixed width of 150 pixels, 60% JPEG quality; approximately 2kB each. Each thumbnail corresponds to its fullsized counderpart
which is no less that 80% JPEQ quality. Uncompressed JPEG images are available via FTP at
ftp://www.cpap.org/uncompressed/ (Under construction).
Each page contrains up to 30 thumbnailed images per page (~200kB per page) and, depending upon your connection bandwidth, make take a while to load.