I am dealing with a single-page application that requires scrolling. However, when I try to capture a screenshot, only the portion visible on the screen gets saved. What adjustments or configuration should I make to capture the entire page?
const launchInstance = await puppeteer.launch(configOptions);
const newTab = await launchInstance.newPage();
await newTab.goto(siteURL);
await newTab.screenshot({ file: 'complete_view.png', fullPage: true });
await launchInstance.close();
i solved it by waiting for async stuff to wrap u p, then scrolling slowly till i hit the page bottom. added a brief delay after full scroll and it captured everything nicely. gives time for lazy load content to appear.
I encountered a similar scenario while working with a single-page app where not all dynamic content was visible at the time of device capture. In my case, ensuring that all network activity and asynchronous operations had settled before taking the screenshot proved essential. I achieved this by waiting for a specific network idle event and sometimes adding a small delay to give the page time to render fully. Adjusting the viewport dimensions to simulate a larger display also helped in capturing the entire page without losing any content.
When dealing with SPAs that load dynamic content on scroll, another effective approach is to programmatically scroll through the page so that all content is triggered to load before taking the screenshot. This can be achieved by using a loop with page.evaluate to scroll a device viewport incrementally until the bottom of the page is reached. In my experience, combining this technique with a sufficient delay after each scroll step ensures that any lazy-loaded elements have time to render. This method has significantly improved the accuracy of capturing the entire page.