In computing, page zooming is the ability to zoom in and out a document or image at page level. It is usually found in applications related to document layout and publishing, e.g. word processing and spreadsheet programs, but it can also be found in web browsers as it improves accessibility for people with visual impairment and people using mobile devices, such as PDAs and mobiles which have a relatively small screen. While it is becoming nearly universal as a visual aid, sources (e.g. Wikipedia) and viewing devices (e.g. 'smart' phones) still force users to fumble for reading glasses, other magnifying devices, or to simply be left out.
This concept has also been extended to home entertainment devices. Most media players of recent generations such as DVD and Blu-ray include (via buttons on a remote) the ability to "zoom" in and out, and to change the focus of the zoom in any direction in two dimensions.[citation needed]
References
See also
- Resolution independence, in which elements on a computer screen are rendered at sizes independent from the pixel grid
- Zooming user interface