DQM and Experience Optimization
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DQM Checkpoints and Standards

Checkpoints - Do not disable or suppress the ability to zoom

Here is a list of reasons to not disable zoom:
  • The text may be too small for the user to read.
  • The user may want to see more detail in an image.
  • Selecting words to copy/paste may be easier for users when the text is larger.
  • The user wants to crop animated elements out of the view to reduce distraction.
  • The user wants to zoom a website that was not implemented in a responsive way.
  • Satisfy WCAG 1.4.4
Affects:Accessibility (WCAG 2 Level AA, 1.4.4,  WCAG 2.1 Level AA, 1.4.10), Usability
Technical Details: The checkpoint examines the entire HTML source code of a page and reports if within the meta tag, the attribute user-scalable is set to 0 or no as well as if maximum scale is 0 or 1.

User-scalable allows the device to zoom in and out, having a value of 0 or no asks the device not to zoom
maximum-scale indicates the maximum amount the visitor can zoom on the page. Setting a value of 1.0 indicates that the page does not zoom.

Understanding Success Criterion 1.4.4: Resize text

Understanding Success Criterion 1.4.10: Reflow

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Last update:
‎04-24-2019 06:45 AM
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