Return to list of success criteria
1.4.4 Except for captions and images of text, text can be resized without assistive technology up to 200 percent without loss of content or functionality. (Level AA)Understanding Success Criterion 1.4.4
Note: Other techniques may also be sufficient if they meet the success criterion.
G142: Using a technology that has commonly-available user agents that support zoom
SL22: Supporting Browser Zoom in Silverlight (Silverlight)
SL23: Using A Style Switcher to Increase Font Size of Silverlight Text Elements (Silverlight)
Ensuring that text containers resize when the text resizes AND using measurements that are relative to other measurements in the content by using one or more of the following techniques:
C28: Specifying the size of text containers using em units (CSS)
Techniques for relative measurements
Techniques for text container resizing
Providing large fonts by default (future link)
Using page-percent for container sizes (future link)
Avoiding scaling font sizes smaller than the user-agent default (future link)
Note: The author won't actually know the font size, but should avoid percentage scaling that results in less than 100%
Avoiding justified text (future link)
Providing sufficient inter-line and inter-column spacing (future link)
Providing different sizes for non-text content when it cannot have an equivalent accessible alternative (future link)
Avoiding the use of text in raster images (future link)
Using server-side scripts to resize images of text (future link)
Ensuring that text in raster images is at least 18pt (future link)
Scaling text down to 50% (future link)
Providing a mechanism to allow captions to be enlarged (future link)