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How to Get an Element’s Box Model with Puppeteer

Select an element with Puppeteer, call boxModel(), and check for null before reading its CSS box quads and dimensions.
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Use Puppeteer’s ElementHandle.boxModel(): select the element, await the method, and check whether it returned null. A non-null result gives you the content, padding, border, and margin as coordinate quads, plus the element’s width and height.

Get the box model

Page.$() returns an ElementHandle for a matching selector, or no handle if nothing matches. Then call boxModel() on that handle. This runnable example reports both cases explicitly:

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const element = await page.$('.target');
if (!element) {
  throw new Error('No element matched the selector');
}

const model = await element.boxModel();
if (!model) {
  throw new Error('Element is not part of the layout');
}

console.log('width:', model.width);
console.log('height:', model.height);
console.log('content:', model.content);
console.log('padding:', model.padding);
console.log('border:', model.border);
console.log('margin:', model.margin);

The API returns Promise<BoxModel | null>, so handle both a missing selector and a null box model. The method returns null when the element is not part of the layout; the documentation gives display: none as an example. See Puppeteer’s method reference and ElementHandle documentation.

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Read the returned dimensions and coordinates

A non-null BoxModel has four quads: content, padding, border, and margin. Each quad contains points with x and y coordinates. Puppeteer documents those points as sorted clockwise. For example, the first point of the border quad can be read like this:

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const borderTopLeft = model.border[0];
console.log(`border top-left: ${borderTopLeft.x}, ${borderTopLeft.y}`);

The model’s width and height are also available directly; use the quads when you need the separate CSS box layers rather than only an overall rectangle. The documented fields are listed in Puppeteer’s BoxModel interface.

Choose between boxModel() and boundingBox()

  • Use boxModel() when your code needs the content, padding, border, and margin quads separately.
  • Use boundingBox() when one bounding rectangle relative to the main frame is sufficient. It also returns null for an element that is not part of the layout. See the boundingBox() reference.

Troubleshoot a null result

  • No element handle: page.$() did not find a match. Check the selector and confirm the page has reached the point when the target element exists.
  • boxModel() returns null: Puppeteer could not provide a layout box for the element. Check whether it is hidden from layout, such as by display: none, and whether the page state is the one you intended to measure.

The documentation versions identified for the method and interface were 25.3.0 and 24.40.0, respectively; these are the versions shown on those documentation pages, not a guarantee about the latest release or the version installed in your project. For version-sensitive work, check the documentation corresponding to your installed Puppeteer package.

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Or skip the browser setup

If your goal is a visual capture rather than the separate CSS box coordinates, ScreenshotNeo can return a screenshot or PDF through one request. It is not a replacement for boxModel() when your code needs geometry.

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Quick Recap

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  • Plug and Play Simplicity: Just plug in the tiny nano USB receiver and start working in seconds with a strong, reliable connection to your wireless computer mouse up to 33 feet / 10 m (5)
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cURL:

curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webp

Python:

import requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"}, timeout=90)
open("shot.webp", "wb").write(r.content)

Node.js:

const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://stripe.com' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);

See the ScreenshotNeo API documentation for request options. Cookie banners, newsletter popups, and chat widgets are removed before capture; bot checks, blank pages, and failed loads are never billed. Its MCP server lets AI agents take screenshots. The Free plan includes 1,000 screenshots per month with no card, and paid plans start at $5 for 3,000. Sign up for free.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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