ico The .ICO filename extension refers to the ICON image file format originally developed by Microsoft. The extension is used to represent computer icon images of varying sizes designed for the operating system Microsoft Windows. Its use today has extended to developing icons for programs designed using the Microsoft developer's suite Visual Studio and other applications. Similar to other device independent bitmap file formats, the ICON file format is also in the raster graphics class of image formats where each individual pixel is part of an orthogonal dot matrix data structure with support for a limited palette of color information. As a resource file, the .ico file format has its strength in contextual use. This allows for multiple icon images of different color depth or size to be stored within the resource file and used when appropriate.
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.