We have a requirement for the construction of a high-resolution web proofing system. Features include: * upload of content * examine vector-based and raster files in a window with ability to view, zoom, rotate, etc * ability to annotate files and have the annotations saved back with the file for future reference/review along with meta-data (such a date stamp, person making the amend, overview, etc) It needs to work on both PC and Mac platforms. If you have done something like this before, we would be very interested in hearing from you. In all cases, please give examples of work and approx. costings. UK-based freelancers only please.