For the best results we require you to supply your company logo as an EPS, AI (Adobe Illustrator) or PDF file format. These are vector files which means they are scalable up to any size. A professionally designed logo should have been supplied by your designer in one these formats.
If you are supplying a photographic image then we would supply us the highest possible resolution to enable us to print it to the highest quality. Don't worry if the file size is large, as we have a dropbox you can upload your files to. We can use most formats including high quality JPEGs, TIFFs, Raw and PSD files.