CSSOM View Module by World Wide Web Consortium
= CSSOM View Module by World Wide Web Consortium
{c}
https://www.w3.org/TR/2025/WD-cssom-view-1-20250916/
W3C Working Draft, 16 September 2025. Section 2.2 distinguishes page zoom and visual-viewport scale; Window.devicePixelRatio algorithm divides CSS pixel size at current page zoom by output-device pixel size.