Most photo boxes are set to be in the dimensions of a standard digital camera photo of 4 x 3.  This means if you have a large photo, any of these sizes will work:

900 x 675 pixels 
1200 x 900 pixels 
1500 x 1125 pixels

You can make it as large as you’d like as long as the ratio is the same. If you need to crop an image that’s too tall or too wide, you can use this website:  http://www.picresize.com/

If this is too confusing, not to worry! Email us the photos and we’ll change the dimensions for you at no cost.  Just email  support@turnkeyflyers.com letting us know and attach your photos.