Visual Viewport
The portion of the viewport that is currently visible is called the visual viewport. This can be smaller than the layout viewport, for example when the user has pinch-zoomed. The visual viewport is the visual portion of a screen excluding on-screen keyboards, areas outside of a pinch-zoom area, and any other on-screen artifact that doesn't scale with the dimensions of a page.
See also
- Viewport
- Layout viewport
- Viewport concepts
- CSSOM view module
- Visual Viewport API
- Viewport on Wikipedia
- A tale of two viewports (Quirksmode)