Set Puppeteer’s mobile viewport before navigating to the product page, then choose whether you need the initial viewport, the full page, or a single element. The example below uses a 390 × 844 CSS-pixel viewport as an illustration—not an established Indian mobile standard—and saves a full-page PNG.
Choose what the screenshot should show
Decide on the output before configuring the capture: these options produce different images.
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- Initial viewport: the visible portion of the page at the chosen viewport dimensions. Leave
fullPageunset or set it tofalse. - Full page: the page’s full vertical content. Set
fullPage: true. - Clipped region: a specified rectangle of the page. Pass a
cliprectangle topage.screenshot(). - One element: capture a product image, price block, or other component with an element screenshot rather than capturing the entire page.
Puppeteer’s screenshot options document these capture modes and output settings; they do not specify a canonical mobile width for Indian e-commerce pages. [ScreenshotOptions]
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Install Puppeteer in your project if needed with npm install puppeteer. Save this as an ES module, for example product-mobile.mjs, and run it with node product-mobile.mjs. Replace the sample URL with the product page you are authorized to capture.
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import puppeteer from 'puppeteer';
const browser = await puppeteer.launch();
try {
const page = await browser.newPage();
// Illustrative dimensions in CSS pixels, not an Indian device standard.
await page.setViewport({
width: 390,
height: 844,
deviceScaleFactor: 1,
isMobile: true,
hasTouch: true,
});
await page.goto('https://example.in/product', {
waitUntil: 'networkidle2',
});
await page.screenshot({
path: 'product-mobile.png',
fullPage: true,
});
} finally {
await browser.close();
}The example configures 390 × 844 CSS pixels, enables mobile viewport behavior and touch, and uses a device scale factor of 1. It captures the full page as a PNG. Puppeteer’s viewport API also supports orientation and other device-related settings. [Viewport]
Set the viewport before navigation. Puppeteer notes that viewport changes can affect the page and that some changes may reload it. [Page.setViewport()]
Use a named device profile when that is the test target
If you need one of Puppeteer’s named device configurations, use KnownDevices and page.emulate() instead of manually choosing metrics. Emulation applies device metrics and a user agent; apply it before navigating. A profile is an emulation configuration, not proof of complete equivalence to a physical handset or its network conditions. [KnownDevices] [Page.emulate()]
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import puppeteer from 'puppeteer';
import { KnownDevices } from 'puppeteer';
const browser = await puppeteer.launch();
try {
const page = await browser.newPage();
await page.emulate(KnownDevices['iPhone 13']);
await page.goto('https://example.in/product', { waitUntil: 'networkidle2' });
await page.screenshot({ path: 'product-device.png', fullPage: true });
} finally {
await browser.close();
}Choose a named profile only when its particular dimensions and emulated behavior suit the test. If reproducible, explicitly controlled dimensions matter more, set the viewport properties directly as in the first example.
Capture only the product element or a clipped region
Element screenshot
Use an element screenshot when the artifact should be one component rather than the page. Puppeteer scrolls the selected element into view if needed. Replace the selector with one that matches the page.
const productImage = await page.$('[data-testid="product-image"]');
if (!productImage) {
throw new Error('Product image element was not found');
}
await productImage.screenshot({ path: 'product-image.png' });Clipped screenshot
For a rectangular portion of the page, pass a clip rectangle in page coordinates. Use positive width and height and set the coordinates to the region you want captured.
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await page.screenshot({
path: 'product-region.png',
clip: { x: 16, y: 120, width: 358, height: 420 },
});Do not combine a full-page capture expectation with a small clip and assume the result is the same artifact: choose the mode that matches the intended output. The screenshot API also supports output type, quality for supported formats, output path, and transparency-related options. [Page.screenshot()] [ScreenshotOptions]
Make the capture more representative and repeatable
- Pick dimensions deliberately: record width and height in CSS pixels alongside the resulting image. The illustrative 390 × 844 values above are not a universal recommendation.
- Match device behavior to the scenario: decide whether mobile viewport behavior, touch input, a device scale factor, orientation, and a profile-derived or separately configured user agent are needed.
- Choose a wait condition for the page: the example uses
networkidle2. A page with ongoing network activity or delayed product content may need a different wait strategy; navigation completion alone does not guarantee every page-specific element is ready. - Keep the capture mode explicit: use
fullPage: truefor the whole page, omit it for the viewport, or use a clip or element screenshot for a focused artifact. - Use the same settings for comparisons: keep viewport, emulation, wait condition, and screenshot mode constant when comparing pages or changes. This isolates configuration differences from page differences.
Troubleshooting common capture problems
The screenshot looks like a desktop layout
Check that setViewport() or emulate() runs before goto(). Confirm the chosen width and whether isMobile is enabled. If the page was already loaded before a viewport change, set the viewport and reload or navigate again; Puppeteer documents that some viewport changes can reload the page. [Page.setViewport()]
The saved image is only the first screen
That is the default behavior when fullPage is false or omitted. Set fullPage: true for a full-page capture, or use a clip or element screenshot when you want only a particular region.
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The screenshot is blank or content is missing
Confirm the URL and navigation succeeded, then check whether the page’s content appears after navigation. If a specific product component loads later, wait for its selector before taking the screenshot:
await page.waitForSelector('[data-testid="product-image"]');
await page.screenshot({ path: 'product-mobile.png', fullPage: true });Use a selector that actually exists on the target page. A timeout waiting for a selector generally means the selector did not appear within the configured wait period, or the page did not reach the expected state.
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The element screenshot fails
Check the selector result before calling screenshot(). If no element matched, adjust the selector to the page’s markup or wait for that element to appear. Puppeteer’s element screenshot scrolls the target into view, so a prior manual scroll is not normally required. [ElementHandle.screenshot()]
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The image differs after changing viewport settings
Viewport changes can affect page behavior and may trigger a reload. Configure the viewport or device profile before navigation, then capture under the same settings each time. [Page.setViewport()] [Page.emulate()]
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ScreenshotNeo can return a screenshot or PDF from one request. For example, this cURL command requests a WebP screenshot of a product URL:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.in/product -o product.webpSee the ScreenshotNeo API documentation for request options. ScreenshotNeo removes cookie banners, newsletter popups, and chat widgets before capture; these steps can be turned off. Bot checks, blank pages, failed loads, timeouts, and cache hits are not billed, and the response identifies the page verdict and billing status in headers. Its MCP server offers screenshot, page-info, and PDF tools for AI agents. The Free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000 shots.
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Frequently Asked Questions
Does 390 × 844 represent a standard Indian phone viewport?
No. It is an illustrative CSS-pixel configuration; the Puppeteer API documentation does not establish a universal Indian e-commerce mobile width.
Does Puppeteer device emulation guarantee the same result as a physical phone?
No. It configures device metrics and a user agent, but does not establish complete physical-device or network equivalence.
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