As you can imagine, there are thousands of computer applications in use around the world. These applications each save their files in a certain way. This is called a file type or file format. For example, Microsoft Word can save your work as a ".doc", or even a ".txt" file.

Although we can work with almost any file format, we work most often with the following types of files: pdf, eps, ai, indd, jpg, tif, psd, bmp, doc, pub and txt files generated on Macintosh and Windows operating systems