Puppeteer capturing a completely black screenshot

Other Questions Puppeteer
1

I’m attempting to use Puppeteer to capture part of a webpage by specifying coordinates and dimensions. However, when I define a region with the left, top, width, and height parameters, the resulting image appears entirely black, even though it works fine without clipping. Below is a sample of my revised code:

const captureSettings = {
  file: 'capture.png',
  crop: { left: 10, top: 10, w: 800, h: 400 }
};
await context.captureSnapshot(captureSettings);

Can anyone suggest a workaround to prevent the screenshot from turning black when using these clipping options?

2

try waitin a bit to ensure everything loads, and check if the defined region is fully within view. might be a viewport issue so adjust it accordingly. hope it helps!

3

I encountered a similar issue with clipped screenshots using Puppeteer. The problem turned out to be related to the timing of when the snapshot was captured. It seemed that the element within the defined region wasn’t fully rendered at the moment of capture, resulting in a black image. I was able to fix it by adding a delay and ensuring that the viewport’s dimensions and positioning were properly set before taking the screenshot. It might be helpful to verify that the coordinates are correct and adjust the timing to let the page fully load its content.

4

In my experience, a completely black screenshot when using clipping is often due to the element not being fully visible or rendered in the viewport. I once encountered a similar problem and resolved it by ensuring that the region to capture was scrolled into view. I achieved this by programmatically scrolling or setting an appropriate viewport before taking the screenshot. Additionally, waiting briefly after page load allowed all graphics to be properly rendered, so it is advisable to experiment with a slight delay or confirm that the clipping dimensions match the visible content accurately.

5

hey, try addin a slight delay to let the content fully load. sometimes puppeteer snapps too quick and clips a blank region. also double-check if any css hidden layers might be interfering. hope this helps!