Wednesday, December 15, 2004

accessibility tip of the day - alt text length

from the great Joe Clarks' book, "Building accessible websites"


Keep the alt text short. There is no set limit on the length of an alt text, but as we shall see shortly, a very long alt may not be fully displayed when image-loading is turned off or when the browser cannot locate the image file. By convention, limit alt texts to 1,024 characters (1 K) or less.

When it comes to writing the actual text, remember that alt takes the place of the graphic. Tell us what the picture is or represents or sum up its function, but don¹t tell us that it¹s a picture. I¹ll give you actual examples in a moment, but steer clear of writing a sort of meta­alt text, like ³Picture of sunset over Darling Harbour² or ³Picture of company logo.²


Joe Clarks - Building Accessible Websites: The Image Problem

Updated - HTML Test Suite for WCAG 2.0 Test 3 - ALT text must be short.

2 Comments:

Anonymous Anonymous said...

Are Writing Exercises Effective? Are Writing Exercises Effective?

5:24 AM  
Anonymous Anonymous said...

Are Writing Exercises Effective? Are Writing Exercises Effective?

7:04 AM  

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