The image you upload should meet the following requirements:
1. The size of each image should not exceed 50M;
2. The file formats supported are PNG and JPG; if an image has transparent pixels, PNG format is highly recommended;
3. The image DPI(dots per inch) should be at least 75, preferably over 150.
If the DPI is not high enough, the design may turn out to be pixelated. Higher DPI ensures that details can be printed out perfectly.
Although 150 DPI is sufficient in most cases, it won't hurt to make it even higher if the image contains intricate details. For the best print quality, you can start with 300 DPI.
When creating a file, you also need to consider the image size. The chart below shows the maximum sizes of different print areas.
The good news is you don't have to worry about print failure, as we will reach out to you in advance if your print file doesn't work or may cause undesirable print results. You'll be able to adjust the file until it's ready for print. However, if you do not reply within 48 hours, we will assume that you agree to proceed with production without any adjustment.
