Web Design & Usability Guidelines

 

Page Layout


 

Design Within an "Image-Safe" Area

 

Anticipate your users' screen resolution settings and the size of their monitors. Use this information to define a dimension for the "image-safe" area. Allow room for browser elements such as navigation buttons and scroll bars.

 

 


Design for Full or Partial Screen Viewing

 

Consider whether your Web site will be used "full screen" or as a "partial screen" (where two or more browsers are open at once) by the majority of your users. If most users use "full screen", fill all the available design space. If most users view their pages in full-screen mode, then designers should determine the size of the available space and make full use of it. Currently, most people view Web pages at a resolution of 800 x 600 pixels, which translates to a design space of about 780 pixels. 

 

 


Page Length

 

Determine your goals and your users' goals when making page length decisions. Short pages, those containing one or two screens of text, work well for the home page and menu pages when users are scanning for link choices. Longer pages, although they require more scrolling, may work well for destination pages where related content can be printed and read/scanned together.

 

 


Vertical, Horizontal Alignment

 

Display navigation and identity in the top and left areas of the screen. The left area of the screen is useful for displaying navigation links within a category. Users are comfortable and familiar with this design. It also clearly and consistently separates navigation from content so that users know where to find each.

 

 


Things to Avoid

 

Users should be able to recognize immediately whether the subject of any given page interests them. Elements that are critical to identifying page contents need to be visible in the image-safe area without scrolling.

 

Avoid avoid using images and tables that are wider than your defined image-safe area. If images and tables are wider than the browser window, a horizontal scrolling bar will appear. Users often become annoyed if they have to manipulate a horizontal scrolling bar to see content.


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