FlashPix is a bitmapped Computer graphics file format where the image is saved in more than one resolution. Though this makes it larger even than a TIFF file, when a request is sent for the file by a Web browser only the resolution required for the current screen resolution is sent to the browser; this therefore saves on bandwidth and download time.
FlashPix files have the .fpx file extension. FlashPix uses Microsoft's structured storage format which stores hierarchical data in a single file. It was created by a consortium of Eastman Kodak, Microsoft, Hewlett-Packard, and Live Picture Inc.