eps The legacy EPS format or encapsulated postscript file format was developed as a document interchange format by Adobe systems in 1992 to facilitate cross platform importing and exporting of vector graphical documents between supporting applications and documents. The EPS file is commonly associated with Adobe illustrator and other applications that support the postscript language. The EPS format supports vector graphics, bitmap images, as well as text but is more commonly used for graphic representation. It is worth noting that EPS files exist as final-form representations allowing minimal editing once created. The exception to this is the support of a few transformation operation such as rotation, scaling, and clipping. An EPS file is usually produced to be included in other documents such as text documents.