We highly prefer print-ready PDF files, but other acceptable file types are .jpg, .tiff and .eps files.We can also accept native files from Adobe Photoshop, Adobe Illustrator, or Adobe Indesign.However, sending us native files can potentially hold up or complicate your order if you have things such as:missing fontsfonts not loading properlymissing imagesWith the modern day ease of creating print-ready PDF files from virtually any native application, and all the positives that come with printers using them, it's the way to go if possible.