Page Visibility

html.spec.whatwg.orgsite

This specification defines a means for site developers to programmatically determine the current visibility state of the page in order to develop power and CPU-efficient web applications.

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Web Performance Optimization

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2026-10-10

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Web Performance Optimization › Specs: “This specification defines a means for site developers to programmatically determine the current visibility state of the page in order to develop power and CPU-efficient web applications.”