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Usability

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Now, users experience the usability of a site before they have committed to ... to London to have a feature map location of the nearest Denny's or Fairfield Inn. ... – PowerPoint PPT presentation

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Title: Usability


1
Usability
  • By John Sullivan

2
Why Usability?
  • Now, users experience the usability of a site
    before they have committed to using it and before
    they have spent money on potential purchases.
  • Main goal is to make it easy for customers to
    perform useful tasks.
  • Remember that innovation is 10 inspiration and
    90 perspiration.
  • Usability changes less rapidly than web
    technology.
  • Place the customer needs at the center of your
    web strategy.

3
Why Everybody Designs Websites Incorrectly
  • Business model of treating the Web as a brochure
  • Managing the web project as it if were a
    traditional corporate project. Lead to internal
    focus
  • Information Architecture structuring site to
    mirror corporate structure
  • Page design creating gorgeous pages and evoke
    positive feelings. Internal demos do not suffer
    response time delays. Keep user in mind.
  • Content Authoring writing in the same style as
    youve always written. Hypertext
  • Linking strategy treating your own site as the
    only one that matters, without proper links to
    other sites and without well-designed entry
    points for others to link to.

4
Page Design
  • When visiting MapQuest, most of the screen space
    ends up being used for distracting machinery that
    is extraneous to the content the user came for.
    Of the 480,000 precious pixels on an 800x600
    display, only 20 are used for the content of
    interest to the user (green). Additionally, 31
    of the pixels are used for operating system and
    browser controls (blue), 23 are used for site
    navigation (yellow), and 10 are used for
    advertising (red). The remaining 16 of the
    pixels go to unused (white) because coding does
    not allow reformatting.

5
Larger Screen
  • MapQuest on a bigger screen results in an equally
    bad utilization of the pixels. Of a 700x1024
    pixel area, only 14 is used for content (green).
    More acceptable 16 is used for the operating
    system (blue), 51 used for site navigation
    (yellow), and a reasonable 6 is for advertising.
    13 unused.

6
1999 vs 1997
  • New design introduces a new type of advertising
    pollution in the form of special buttons to add
    map listings for selected companies. It is
    fairly useless for anybody who travels to London
    to have a feature map location of the nearest
    Dennys or Fairfield Inn. Some new features are
    useful, such as the capability of Quick Maps to
    get the location of an airport.

7
Whitespace
  • Avoiding wasteful amounts of whitespace should
    not lead to extremely dense layouts like the
    February 1997 version of Pathfinders home page.

8
Rules
  • Do not consider whitespace wasted when it is part
    of the content design or navigation design.
  • As a rule of thumb, content should account for at
    least half the pages design.

9
Too Much
  • The June 1997 version of the home page feels less
    stressful, although it is still somewhat
    confusing and overwhelming. The lines separating
    the feature headlines do not seem necessary as
    an experiment, I tried to delete the lines and
    move the headlines closer to the magazine logs to
    more clearly denote which magazine goes with
    which story.
  • Jakob Nielsen

10
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13
The End
  • By John Sullivan
  • Fall 2000.
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