Phone · Android

Surface Duo viewport size

The Surface Duo has a viewport of 540 × 720 CSS pixels and a device pixel ratio of 2.5, which makes about 1350 × 1800 physical pixels.

Viewport (portrait)

540 × 720

Landscape

720 × 540

Device pixel ratio

2.5

Screen resolution

1350 × 1800

Screenshot a website on the Surface Duo

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CSS for the Surface Duo

Target this screen size in CSS (portrait):

@media (max-width: 540px) {
  /* Surface Duo and smaller */
}
@media (min-resolution: 2.5dppx) {
  /* high-density screens: serve sharper images */
}

Design for ranges, not single devices: many phones share the same viewport width (for example 540 px).

User agent

The user agent Chrome DevTools uses when it emulates the Surface Duo:

Mozilla/5.0 (Linux; Android 11.0; Surface Duo) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/<version> Mobile Safari/537.36

Chrome inserts its own version number for <version>.

Test your site on the Surface Duo

In Chrome, open DevTools (F12), turn on device mode (Ctrl+Shift+M or ⌘+Shift+M) and pick the device from the Dimensions menu, or use the screenshot tool above to capture any page at this size.

Data from the device list built into Chrome DevTools (devtools-frontend, BSD license).

Frequently asked questions

What is the viewport size of the Surface Duo?

540 × 720 CSS pixels in portrait and 720 × 540 in landscape.

What is the screen resolution of the Surface Duo?

About 1350 × 1800 physical pixels: the viewport multiplied by the device pixel ratio of 2.5.

Why is the viewport smaller than the screen resolution?

Phones pack several physical pixels into one CSS pixel (the device pixel ratio) so text stays readable. Websites lay out in CSS pixels; images can use the extra pixels for sharpness.

Other devices

Screenshot API

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GET https://api.screenshotbase.com/v1/take?url=https://example.com&viewport_width=540&viewport_height=720&device_scale_factor=2.5

# Response: the image (PNG, JPG, WebP or GIF)
curl -G "https://api.screenshotbase.com/v1/take" \
  --data-urlencode "url=https://example.com" \
  -d viewport_width=1280 -d viewport_height=800 \
  -d format=png \
  -H "apikey: YOUR-API-KEY" \
  -o screenshot.png

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