The acceptable formats include: EPS (Encapsulated Post Script) AI (Adobe Illustrator) PDF (Adobe Reader PDF) PSD (Adobe Photoshop) JPEG (High Resolution JPEG) TIFF (High Resolution TIFF) Depending on the resolution and pixels, PSD, JPEG, TIFF files gets blurry when enlarged. Thumbnail JPGs or GIFs cannot be used for large prints. If submitting these files please follow these guidelines. 100% scale (full size output) at 100 dpi 50% scale at 200 dpi or higher 25% scale at 300 dpi or higher 10% scale at 600-1200 dpi Vector: Line art is scalable to any size, it never loses resolution and the image stays clean and crisp. Vector files can be submitted in any size, in proportion to your banner's size.