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Orientation
Guideline
Content does not restrict its view and operation to a single display orientation, such as portrait or landscape, unless a specific display orientation is essential.
Intent
The intent of this guideline is to ensure that content displays in the orientation (portrait or landscape) preferred by the user. Some websites and applications automatically set and restrict the screen to a particular display orientation and expect that users will respond by rotating their device to match, but this can create problems. Some users have their devices mounted in a fixed orientation (e.g. on the arm of a power wheelchair). Therefore, websites and applications need to support both orientations by not restricting the orientation. Changes in content or functionality due to the size of display are not covered by this criteria which is focused on restrictions of orientation.
This guideline complements device "lock orientation" settings. A web page that does not restrict its display orientation will always support the system-level orientation setting, since the system setting is picked up by the user agent. Alternatively, where a device-level orientation lock is not in place, the user agent should display the page according to the orientation of the device (either its default, or the current orientation determined by any device senors).
Finding and Inspecting Applicable Components
Open up the Web page or Web-based application on a mobile device (smartphone or tablet) and rotate the device.
Failure Conditions
- The Web page or Web-based application does not allow the device to determine the display orientation.
- Fails 2.1.1 1.3.4 Orientation
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