Double tap to zoom
It works like this:
Double tap works with content that can be zoomed in on, like a web page, image or map. The content is usually displayed full screen.
A user can double tap a specific target on the screen to magnify that target.
The level of magnification is fixed, and the screen content is adapted to the magnification. (e.g. text is wrapped to fit the screen width)
If the user double taps again….
… the content is scaled down to the original size
You can use double tap if your app displays content that can be zoomed into, like a web page, image or map. Double tap allows the user to magnify a specific target (e.g. a specific portion of text, or a street on a map) to enhance its visibility. The zoom level is fixed, and screen-content is adapted to the magnification level. If you want to allow stepless magnification, or if there's no specific target to magnify, consider using Pinch & Spread. Ideally, both methods of magnification are used, allowing the user to use the method of their choice.
- Zoom in on a specific target - no panning necessary after magnification
- Fixed magnification level allows for faster magnification (than pinch&spread)
- Content of screen is adapted instantly - improves readability
- Does not allow stepless magnification - only one fixed level
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