The easiest way to get a custom size is by downloading the A3 size, our largest file size (297 x 420mm or 11.7 x 16.5 in), then scale down and crop it to whatever size you need to. If you are printing from home, you should be able to find these options in your print settings. If you are sending the file to a print shop, then you should be able to select from various sizes after uploading the image. Any prints larger than A3 11.7 x 16.5” will start to lose resolution and look a little blurry. You may contact us to see if we have a larger size available, additional fees may apply.