CSS viewport 1600 × 900 pixels at 1× device pixel ratio. The exact size browsers report on the HD+.
The HD+ viewport is 1600 × 900 CSS pixels, with a device pixel ratio of 1 on a 1600 × 900 pixel display.
Test your site at HD+ (1600 × 900)
When a user visits your site on the HD+, the browser reports window.innerWidth = 1600 and window.devicePixelRatio = 1. Your CSS media queries match against the 1600px CSS width, not the 1600 × 900 physical pixel count of the panel.
At 1600px it hits Tailwind 2xl (1536px) and Bootstrap xxl (1400px).
For sharp full-width images, serve a source at least 1600px wide (1600 CSS px × 1 DPR) through srcset and let the browser pick it.
/* HD+: 1600×900 CSS px, DPR 1 */
@media (max-width: 1600px) {
/* styles for this width and narrower */
}
@media (min-resolution: 1dppx) {
/* serve high-density assets */
}The HD+ reports a CSS viewport of 1600×900 pixels. Browser toolbars reduce the visible height slightly, so window.innerHeight is usually smaller than the full screen height.
The HD+ uses a default device pixel ratio of 1. Each CSS pixel maps to 1×1 physical pixels on its 1600×900 panel.
At 1600px wide it matches Tailwind 2xl (min-width 1536px) and Bootstrap xxl (min-width 1400px).
Open screensize.io, enter your URL and pick HD+ (1600×900). It opens your site in a real browser window at exactly that CSS viewport, so media queries, container queries and JavaScript resize logic behave as they would on the device. For touch behaviour and the real browser engine, confirm on hardware before shipping.
See the full list of device viewport sizes →
Or browse common screen sizes by category →
Use screensize.io to preview your website at any of these resolutions instantly — no DevTools needed.
Open screensize.io →