DSF

Customer has supplied me with a school photo, white background. When I print it I get a slightly darker square around the edge of the image. Basically looks like there's a tiny amount of colour printing in that are. Not really noticeable until I print onto something large and then you can see the edge.

I checked the image in Photoshop and the white background is definitely 100% white. If I remove the white background and save as a PNG with transparent background the square goes so I'm sure it's the image.

Could this have occurred when the image was saved as a JPG?

You've not inadvertently picked Absolute Colorimetric as your rendering intent have you? That'll turn the white grey.

Customer provided image I'm afraid but that would certainly be a cause I guess. Wouldn't the grey show in photoshop when I use the dropper tool though?

I don't know Photoshop but it should certainly show if you go to soft proofing. Rendering Intent is when you go to print. Until then, white looks white.

If I switch between Absolute Colorimetric and Relative Colorimetric in Qimage, the Soft Proof certain shows the background being grey with AC rather than white with RC.

Pretty sure this must be the case, getting customer to check things there and and will check again here tomorrow, many thanks

can you not just change image profiling yourself Justin???