The portion of theviewport that is currently visible is called thevisual viewport. This can be smaller than thelayout 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
• CSSOM view API
• Viewport on Wikipedia
• A tale of two viewports (Quirksmode)