We can work with a very wide variety of image file formats, although our preference is for high-quality JPG or PNG files, depending on the product.
We prefer JPG files because the compression is very efficient and designed specifically for saving photographic and fine art images.
Although some image data will be lost during the compression process, as there is no meaningful difference between an 80% quality (Level 10 in Adobe) JPG and a TIFF when printed to paper.
Metallic foil prints can be provided in either JPG or PNG as they require a 100% black only foiling areas.
You can print out more about how to prepare your files for foiling here.
See individual product pages for artwork format recommendations.