The resolution is specified in ppi (pixel per inch). In general: the higher the ppi, the sharper the print output. Please keep in mind that there might be a loss of quality, when recalculating a resolution. The ppi alone is therefore not always the decisive factor when it comes to quality. The important part is that the print file is visually sharp. 

Our recommended resolution:

• Sizes smaller than A2: 300 to 356 ppi
• Sizes from A2 and bigger: 100 to 150 ppi

For large size print products, which are not viewed up close (e.g. outdoor advertising) you can choose a ppi of 95.

For some products, you must create your print file with a significantly higher ppi. Information on specific resolution can be found in the data sheet for the respective product.

When in doubt, our customer service will happily consult you based on your print files.