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    FILE TYPES

   Graphic files define the way or method a picture is stored on a computer.
   What file type you use, will decide the quality of the picture. What picture
  quality you want, will also depend on what you want to print or publish. On
  an Internet homepage, a picture file type of lower quality will usually be
  more than sufficient. JPEG or GIF files are often used for this purpose. If
  you wish to print or publish material, like business cards, brochures or an
  ad, a file type of higher quality will be required. File types often used for
  professional print are EPS, PSD and TIF files. Each print house has their
  own file preferences, but they will often have their own software to convert
  the different file types.

   Here is a list of the most commonly used graphic file types:

   JPEG or JPG
   Short for ”Joint Photographic Experts Group”. Maybe the most popular file
  type used today. JPEG or JPG is mostly used for pictures, and is a
  compressed format making it possible to store large pictures without taking
  up too much space on the PC.

   GIF
   Stands for ”Graphics Interface Format”. Developed by CompuServe in   1987. Used for so-called bitmap pictures consisting of lines and blocks with   few colors. Contrary to JPEG, a GIF file supports transparency, making it
  possible to add several layers of picture upon each other in the same
  picture file. This is often seen in ”banners” on the Internet, that “blink, write
  text or in other ways are animated. This is not possible with JPEG pictures.
  The quality of GIF, though, is much lower than JPEG.

   PNG
   PNG means for ”The Portable Network Graphics format”. Commonly   phrased as the next generation GIF. PNG supports more colors, better   compression, better layer and transparency support, in addition to other   benefits making this file type especially suited for Internet use.

   PDF
    PDF stands for ”Portable Document Format”. This is a widely used format   for distributing text presentations. PDF is a universal format that can   contain all types of fonts, formatting, graphic and colors; independent of   what program it was original written in. By using PDF you will avoid   differences in program versions or operating systems. The text or graphic   shown is the same no matter what program or type of PC you use. To be   able to open PDF files you will need Adobe Acrobat, which can be   downloaded for free at www.adobe.com.

   EPS
    Short for ”Encapsulated PostScript”. PostScript was first made only for   being transferred between a PC and printer. This file type can consist of   both vector and bitmat graphic, and can be used in about all types of   graphic programs. EPS is used to transfer the graphical language called   ”PostScript” between programs. EPS pictures are of high quality and are   often used to print or publish graphic in small as well as large formats.

   TIFF or TIF
    TIFF or TIF means ”Tag Interchange Format”. Based on technology
  developed by Adobe (producer of the graphic programs Photoshop and
  Illustrator). TIF is compatible with a wide range of software and operative
  systems like Macintosh, Windows and UNIX. The TIF format is more
  complex and detailed, and therefore takes a lot more space then GIF or
  JPEG files. TIF is used for professional print or for other applications that
  needs higher picture quality.