What file formats should I use for products with special effects like foil printing?

For products with special effects such as foil, you usually provide separate files so the press knows which areas are printed and which are foiled. Keeping these on distinct files avoids confusion during production.

• Process artwork file: only the CMYK color artwork.
• Foil placement file: just the foil areas, typically in a contrasting flat color so the foil zones are clear.
• Proof: a completed proof for reference.

Exact file setup can vary by product, so follow the artwork specifications listed on the product page and confirm with 4OVER4 support before you submit.