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Set deviceScaleFactor in page.setViewport() before navigating, then capture the page with page.screenshot(). For example, a 1280 × 800 CSS-pixel viewport at scale factor 2 requests a high-resolution screenshot:
await page.setViewport({ width: 1280, height: 800, deviceScaleFactor: 2 });
await page.goto(url);
await page.screenshot({ path: 'page.png', fullPage: true });The viewport sets the page’s emulated display metrics; screenshot options separately determine the captured area and output format. Puppeteer’s current documentation identifies version 25.12.0 on the relevant reference pages. Viewport configuration · Screenshot guide
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Complete Puppeteer example
This example uses Puppeteer’s JavaScript API. Replace the URL with the page you want to capture. It writes a full-page PNG with an emulated viewport 1280 CSS pixels wide and 800 CSS pixels high, using a device scale factor of 2.
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(async () => {
const browser = await puppeteer.launch();
try {
const page = await browser.newPage();
await page.setViewport({
width: 1280,
height: 800,
deviceScaleFactor: 2,
});
await page.goto('https://example.com', { waitUntil: 'networkidle0' });
await page.screenshot({ path: 'page.png', fullPage: true });
} finally {
await browser.close();
}
})();Set the viewport before navigation when possible. Puppeteer recommends this ordering for sites that react to viewport changes; changing viewport characteristics can reload a page in some cases. See Page.setViewport().
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- Improved ComfortView Plus: Reduces harmful blue light emissions to ≤35%, for all-day comfort without sacrificing color accuracy.
- Refresh rate: A smooth, tear-free experience with AMD FreeSync Premium (refresh rate up to 120Hz) and an ultra-low 0.03ms response time create a captivating experience for work and play.
- Vivid colors: Immerse yourself in breathtaking 4K visuals with in-plane switching technology. Enjoy vibrant colors with 99% sRGB. The 1500:1 contrast ratio and HDR readiness deliver excellent depth and detail.
- Re-engineered sound quality: Enjoy more detailed sound with spacious audio featuring greater output power, deeper frequency response and more decibel range than the previous generation.
- Ultra-thin bezel: Designed with a sleek, modern aesthetic and an ash white finish, this display features ultra-thin bezels for a refined, minimalist design.
What deviceScaleFactor changes
width and height describe the emulated viewport in CSS pixels. deviceScaleFactor sets the emulated device-pixel ratio used when rendering. A factor greater than 1 requests more device pixels for the same CSS-sized viewport, which is useful when an image needs finer detail. It does not change the CSS dimensions you set for the page.
The documentation describes the setting and API behavior, but does not establish a universal output-dimension guarantee, quality improvement, memory cost, or runtime for every page and configuration. Check the resulting image and the target application when exact rendering matters.
Rank #2
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Choose what to capture and how to encode it
Viewport configuration and capture selection are separate. Set page metrics with setViewport(), then choose the capture extent and format in the screenshot call. Puppeteer documents these screenshot options in its ScreenshotOptions reference.
| Goal | Screenshot configuration | What it does |
|---|---|---|
| Capture the visible viewport | page.screenshot({ path: 'view.png' }) |
Captures the viewport; fullPage defaults to false. |
| Capture the full page | page.screenshot({ path: 'full.png', fullPage: true }) |
Captures the full page rather than only the viewport. |
| Capture a rectangular region | page.screenshot({ path: 'region.png', clip: { x: 0, y: 0, width: 600, height: 400 } }) |
Captures the selected rectangle. |
| Capture one element | await (await page.$('.target')).screenshot({ path: 'element.png' }) |
Uses ElementHandle.screenshot() for a particular page element. |
The screenshot type can be inferred from the file extension, or you can set the type option explicitly. The quality option does not apply to PNG. For transparency, use omitBackground: true where appropriate.
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Viewport emulation is not headless screen configuration
page.setViewport() controls the metrics of a page’s emulated viewport, including its device scale factor. Puppeteer’s screen configuration guide covers configuring the headless browser’s available screen separately. Use viewport settings when the page layout or screenshot’s device-pixel ratio is the concern; screen configuration is a distinct browser-display concern.
Common problems and fixes
- The image is not the size you expected: distinguish CSS viewport dimensions from device-pixel dimensions, and confirm whether you captured the viewport, the full page, or a clipped rectangle. Inspect the actual output rather than assuming a universal dimension rule.
- The page layout differs from the intended viewport: set width, height, and scale factor before
goto(). Some sites react to viewport changes, and Puppeteer notes that certain changes can reload the page. - The image includes only the visible area: add
fullPage: truefor a full-page capture, or useclipfor a defined region. - PNG quality has no effect: the screenshot
qualityoption is not applicable to PNG. Select an appropriate output type if you need an encoding quality setting. - An element screenshot fails: make sure the selector resolves to an element before calling its screenshot method; use
ElementHandle.screenshot()for element capture as documented in the screenshot guide.
Or skip the browser setup
If you need a screenshot without launching and configuring Puppeteer yourself, ScreenshotNeo takes a URL in one API request. Cookie and consent banners, newsletter popups, and chat widgets are removed before capture; each step can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and responses identify the page verdict and billing status in headers. Its MCP server provides screenshot tools for AI agents, and the service includes PNG, JPEG, WebP, and PDF output options.
Example cURL request (see the API documentation):
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com -o shot.webpThe Free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000. Sign up for 1,000 free screenshots a month, with no card.
Rank #4
- Improved ComfortView Plus: Reduces harmful blue light emissions to ≤35%, for all-day comfort without sacrificing color accuracy.
- Refresh rate: A smooth, tear-free experience with AMD FreeSync Premium (refresh rate up to 120Hz) and an ultra-low 0.03ms response time create a captivating experience for work and play.
- Vivid colors: Immerse yourself in 4K visuals with a VA panel. Enjoy true-to-life colors with 99% sRGB and 95% DCI-P3 coverage. The 1500:1 contrast ratio and HDR readiness deliver excellent depth and detail.
- Re-engineered sound quality: Enjoy more detailed sound with spacious audio featuring greater output power, deeper frequency response and more decibel range than the previous generation.
- Ultra-thin bezel: Designed with a sleek, modern aesthetic and an ash white finish, this display features ultra-thin bezels for a refined, minimalist design.
Frequently Asked Questions
Does deviceScaleFactor belong in page.screenshot()?
No. Set it in the viewport configuration with page.setViewport(); page.screenshot() handles the capture.
Can I use deviceScaleFactor with a full-page capture?
Yes. Configure the viewport first and set fullPage: true in the screenshot options.
Quick Recap
Best Value
- Low blue light: The improved ComfortView Plus reduces harmful blue light emissions to ≤35%, for all-day comfort without sacrificing color accuracy.
- Refresh rate: A smooth, tear-free experience with AMD FreeSync Premium (refresh rate up to 120Hz) and an ultra-low 0.03ms response time create a captivating experience for work and play.
- Vivid colors: Immerse yourself in breathtaking 4K visuals with in-plane switching technology. Enjoy vibrant colors with 99% sRGB. The 1500:1 contrast ratio and HDR readiness deliver excellent depth and detail.
- Re-engineered sound quality: Enjoy more detailed sound with spacious audio featuring greater output power, deeper frequency response and more decibel range than the previous generation.
- Easy connectivity: Keep your desk organized and clutter-free with a single USB-C cable (up to 65W power delivery).
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