Open notesTechnical guidelines
Supported graphic file formats: *.jpg, *.tif, *.gif, *.png, *.bmp
Sponsor lables: Optimal resolution is 1978x972 pixels
New Style Backnumber: Optimal resolution is 1978x778 pixels
The uploaded picture placed automatically on the backnumber so it's
very important to use the possible best image quality (minimum 150 dpi).
We can not guarantee good quality backnumber product from a low quality