For a desktop Browshot capture, set the browser-window dimensions with screen_width and screen_height in the screenshot request. Browshot’s API documentation does not list a request parameter for setting device scale factor: its scale field is returned screenshot information, not a documented input. Browshot API documentation
Set the desktop browser-window dimensions
Include screen_width and screen_height in the request to Browshot’s screenshot-create endpoint, along with the required target url and instance_id. The documentation identifies these dimensions as desktop-browser parameters.
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| Parameter | What it sets | Documented range |
|---|---|---|
screen_width |
Desktop browser-window width | 1–5000 pixels |
screen_height |
Desktop browser-window height | 1–10000 pixels |
For example, to request a desktop browser window 1440 pixels wide and 900 pixels high, pass screen_width=1440 and screen_height=900. These are documented window dimensions; the documentation excerpt does not establish that the resulting image dimensions always equal CSS viewport dimensions.
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The reviewed request-parameter list does not document a caller-controlled device scale factor. Browshot documents scale as returned screenshot information: it is always 1 for desktop browsers, while mobile instances may adjust it to fit the page on screen. Do not treat that returned value as an input for changing a desktop capture’s device scale factor.
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Choosing desktop or mobile capture
Use a desktop instance when you need to specify desktop browser-window dimensions through screen_width and screen_height. Mobile instances follow their own behavior; Browshot says their scale may change to fit the page. Its service pages describe desktop and mobile virtual-device capabilities and screen resolution as a feature, but the cited documentation does not establish broader CSS viewport semantics or a way to set mobile device scale manually. Browshot service · Browshot features
Troubleshooting dimension and scale requests
- Dimensions are rejected: Check that width is between 1 and 5000 pixels and height between 1 and 10000 pixels, and that you are using a desktop instance.
- You cannot find a device-scale request parameter: The reviewed API parameter list does not document one. The documented
scalevalue is returned information rather than a request setting. - The output does not appear to match a CSS viewport: Do not assume output-pixel dimensions and CSS viewport dimensions are equivalent. The cited documentation does not specify that relationship.
- The page appears scaled on mobile: Browshot documents that mobile scale may change to fit the page. Its documentation excerpt does not describe a parameter to override that behavior.
Or skip the browser setup:
ScreenshotNeo can capture a URL with one GET request. Its API accepts a URL and returns a PNG, JPEG, WebP, or PDF; its documented options include viewport/device presets and retina scale. ScreenshotNeo · API documentation
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