AI & the web
Viewport
The area of a document currently visible through a browser window or device display.
In everyday use
A phone shows a narrower part of a page than a laptop window.
What to keep in mind
Zoom can change the visible area. Screen size and the page's layout viewport are not always the same.
Also searched as: Browser viewport
Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
More in ai & the web
Page updated .