Basic file specifications for uploading to our Direct-to-Print service:
For best results, prepare your files like this to send to us for printing:
Adobe RGB, Display P3, or sRGB for color prints and Gray Gamma 2.2 for Piezography
Flattened Tiff or JPEG saved at maximum quality
Don't uprez your image - send it at the native resolution.
For more in depth information, see this FAQ (insert link)