Creating and Updating Gov Info Webpages

Usability

Images

• Usability.gov on graphics: http://www.usability.gov/pdfs/chapter14.pdf
• Image resolution
  • general “web-quality” resolution is 72 dpi (dots per inch)
  • more on image resolution:
    • http://coe.sdsu.edu/eet/articles/wpdresolution/start.htm
    • http://www.drostdesigns.com/understanding-image-resolution/
• Image formats
  • JPG is the most common format
  • PNG is also good
  • GIF is good for non-photo images (logos, etc.)
  • TIFF is archival (therefore often very large/slow)
  • More on image formats:
    • http://victor.transformadora.com/Oreilly/wdesign/wdesign/ch03_04.htm

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