Some important information regarding sizes and ratios
To avoid disappointment, when ordering a print it is best if you use the crop overlay tool first to see what the cropped print will look like rather than just ordering for example a 6x4 print of a 5x4 ratio photo.
The photos are already edited one by one prior to going on the site so that they look best at a particular ratio, my landscapes are almost all 12 x 8 (3x2 ratio) apart from the odd 10 x 8 (5x4 ratio) or panoramic 12 x 5 or 12 x 6. Other photos like ones from the summer festivals are usually 10 x 8 with some 12 x 8's in there too. Not everyone wants a 10 x 8 or 12 x 8 obviously so the following information might help.
Ratios: A 12 x 8 photo (3x2 ratio) will also do an 18 x 12, 15 x 10, 9 x 6 and 6 x 4 without chopping any bits off the photo.
A 10 x 8 photo (5x4 ratio) will also fit 20 x 16, 15 x 12 and 5 x 4 without chopping bits off.
Some sizes you will find in the 'standard sizes' list and some are in the 'other sizes' list.
Some photos can work fairly well in the 'wrong' size, for example you may well be able to get a decent 7 x 5, 10 x 8 or 8 x 6 from a 12 x 8 original but always make sure you check first with the crop overlay tool so that you are not chopping off half a head or a horse's legs. You will see from the crop overlay what the original ratio is, if it fits perfectly then that will be the original ratio. Although it can be done on a phone, it's best done on a larger screen such as a laptop or PC. The crop overlay is different in different browsers too.
For canvases or photo gifts the best option is to get the download, save it and get your canvases or gifts done wherever you like and you can use the downloaded image as many times as you like too.