Graphic file types

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  • 1. GRAPHIC FILE TYPES Raine Carraway WEB-140 (CVCC) Spring 2014
  • 2. Raster vs Vector Raster graphics are digital images made of rectangular pixels, or squares of color. The file size and quality depend on the number of bits per pixel. Vector graphics are based on shapes, lines, and control points, and are based on mathematical expressions rather than individual pixels. This allows vector graphics to be resized with minimal effects on file size and image clarity.
  • 3. PNG PNG is a modern file format that is replacing GIF files for display on web pages and other online applications. PNG is great for high-quality images because it offers more options that GIF, allows transparency for 24-bit RGB images, uses lossless compression, and doesn’t leave JPG artifacts.
  • 4. JPG, JPEG JPG or JPEG is another commonly used file format for online images. Many digital cameras also store and export photos as JPEG files. It is recognized by all web browsers and multiple operating systems and is good for photos when you need a small quality size and don’t mind some loss of quality. The more compression, the greater the loss of quality & clarity.
  • 5. GIF GIF is another of the 3 most commonly used image file formats on the internet. It is popular because it compresses images two ways, creating small file sizes, and because it allows animations. Most of the moving/blinking images that gave 1990s websites their distinctly cheesy look were GIFs. GIF is best for animations, diagrams, logos, cartoons, and graphics with relatively few colors.
  • 6. BMP BMP, or Bitmap is the standard Windows file format for images, and was one of the first image formats. It creates large, uncompressed files, but they have high quality & rich colors in their original size & work well in the MS Windows environment. BMP files are not popular online because the files are large and do not scale or resize well.
  • 7. TIFF TIFF files were created for desktop publishing, work well with graphic processing programs and various forms of printing, and are popular among graphic designers, publishers, and some photographers. TIFF images are very high-quality, because they retain all color and data information, but their large file size make them impractical for online use or simple graphics.
  • 8. SVG / XML Scalable Vector Graphics (SVG) is a vector image format that can support both animation and interactivity. It is supported by all modern major browsers to some degree, making it useful online. A specialized type of the format, Tiny SVG, is recommended for mobile pages/apps and other small-screen displays.
  • 9. PSD, AI, PSP, & CPT PSD (Adobe Photoshop), AI (Adobe Illustrator), PSP (Paint Shop Pro), & CPT (Corel Photo-Paint) are all proprietary formats that are meant to be used by their specific programs. They are useful if you anticipate needing to edit or change the file again in the future, as they save layers and other data, but can only be viewed by the same program in which they were created.