OK, just noticed an odd problem! This sub-forum seemed most appropriate... Here is a screenshot of a pic I took and edited, shown left to right in Preview (as exported 'current' JPG from iPhoto), Safari (as that JPG uploaded to Photobucket) and in iPhoto. As you can see the colours are way more saturated in the left/right images compared to the Safari one... I have no idea why, and I have actually never notice it before. The PNG screenshot is rendered the same in Safari as the original in iPhoto, as in correctly, so it must be something to do with Safari reading JPGs (I wasn't going to start doing screenshots of screenshots - that might cause some kind of quantum rift and I don't want to risk it!). The image was edited a bit in iPhoto and a bit in Aperture (which I have done many times). And the fact Preview seems to render it the same as iPhoto suggests it is a Safari specific issue. Any Mac users ever seen this? Here is the JPG shared from Photobucket, how does it look to you compared to the above screenshot when viewing in your browser, and if you download it? Any help welcomed as this basically means what people see on the web is potentially very different to how I intended! All I found on the subject was this http://www.quora.com/Digital-Photog...-color-spaces-look-undersaturated-on-browsers Which I didn't really understand!!