Graphic design businesses create various graphic items for logos, brands, publications, product packaging and advertisements. The graphic works are made with the help of graphic file formats such as EPS, PNG, GIF and JPG. All the above graphic file formats are known as the bitmap graphics which consist of thousands of small colored squares or pixels in the form of a checkerboard grid. Bitmap files are produced by digital cameras and cell phones, and these files can be created, resized, optimized and edited easily to use in web programs. Most of the web browsers use JPG and GIF file formats as they compresses the size of the file for the efficient delivery of files through the internet.
GIF file formats are used for the creation of web graphics. GIF files support only 256 colors, and can be used in almost all the computer platforms. EPS file formats are used to create images with duotone/monotones and clipping paths. JPG file format is used for web graphics with great amount of gradations and colors. PNG is a file format created to overcome the limitations of GIF. PNG file formats provide lossless compression without any copyright limitations.
Working file formats are of two types- original as well as derivative files. Original files are the JPEG files or raw (unrendered) files that are created by the camera, whereas derivative files are made out of the original files. The rendered as well as unrendered formats are used as the working file formats. Raw files are used with PIE software and the rendered files are used both in pixel editing software and PIE. The JPEG file cannot be used as the working file because of the lossy compression. Working files cannot display graphics properly as they are mainly used for printing the documents. Working files cannot display quality images as required by the web based programs.
Working files are normally used for storing and viewing documents, notes etc. The different working file formats are .DAT, .DCF, .DCT, .DO, .DOC, .DTA, .FRQ, .FRW, .MAP, .SAS, .SD2, .SPS and .WRN. The working files can be included in a .ZIP file which contains a data file, different definitions of the date and other such documentation. The file types will differ according to the file format and the data type included. You can extract the working files from the .ZIP file. With the help of Winzip or PKUNZIP, you can extract the working files. Working files are primarily used for documentation, but design studios are creating graphics for various needs. It is not possible to create graphics using the working files. Hence, professional designers do not release working files.