Mixbook - resolution warning

[bmarro]

I'm using Mixbook to make a gift for my husband. My photos are all getting the warning signal indicating that the resolution is not good enough and may be blurry in print. I have been trying to adjust the resolution using GIMP (like photoshop only free) and that results in very small photographs. Tiny. Any ideas?

 

[hang-the-9]

What resolution are the pictures in? http://www.urban75.org/photos/print.html

You can't just adjust the resolution, you can't add info where info did not exist and end up with a good result. If you have an 800x600 image and you have it at 4x6 size, if you want to make it sharper, it will drop down to a smaller size photo which is what you are seeing.