Why does StationeryHQ prefer PDF files?

We do recommend PDF files. We also accept .JPG and .TIFF files, and are working to accept .EPS and others. We are currently unable to process .AI files. PDF files generated out of Adobe Illustrator with outlined fonts generally produce the best work. Type can pixelate in JPG formats. Great artwork generally makes for great printing, whatever format works for you. Feel free to email info@stationeryhq.com with any questions.