Puppeteer scripts require an explicit viewport size during page initialization. For instance, instead of the usual setViewport method, you might use an alternative like this:
await browser.configureViewport({
width: 1600,
height: 900
});
I need advice on how to adjust the viewport dynamically so it matches the current window dimensions. What approach can achieve this automatic resizing?
In practical experience, dynamic resizing in Puppeteer requires some custom handling as the library doesn’t automatically pick up changes in the browser window. I managed this by first evaluating the window dimensions using page.evaluate to get window.innerWidth and window.innerHeight. These values were then fed into page.setViewport to update the viewport accordingly. Although it’s not entirely built-in, this approach offered enough flexibility for my use case, making it a viable solution when consistent testing across various resolutions is needed.
hey i achieved it by evaluting window dims directly in the page and then using setViewport to update them. its kinda a hacky way but works ok for dynamic resizing without messing with the standard config!
I solved this by integrating a more event-driven approach into my Puppeteer setup. Instead of simply evaluating the window size once, I embedded a short script in the page to listen for resize events. This script sends updated dimensions back to the Puppeteer script through window events. On the Node side, I capture these changes and then apply them with setViewport. Although this method requires a bit more initial setup, it ensures that the viewport remains synchronized with the browser window’s current size, making automated responsive testing far more robust.
I tackled this challenge by implementing a polling mechanism within my Puppeteer script. In my experience, continuously querying the window’s dimensions using page.evaluate on a set interval offers a pragmatic solution for dynamically resizing the viewport. The process involves capturing the dimensions regularly and adjusting the viewport with page.setViewport accordingly. Although it’s not as instantaneous as an event-based approach, this method provides a reliable balance between simplicity and real-time responsiveness, making it suitable for many automated test scenarios.