Puppeteer PDF generation missing images and CSS styling - how to fix?

I encountered a similar issue recently while generating dynamic invoices. The PDF rendering process in Puppeteer often behaves differently from screenshots due to its reliance on the print rendering engine. Even with the use of waitForLoadState, images that load dynamically or via lazy loading scripts may not be fully rendered before the PDF generation begins. A solution I found effective is to introduce an explicit wait after the page has loaded to ensure that all images are fully loaded. You can use this code snippet: await newPage.waitForFunction(() => Array.from(document.images).every(img => img.complete)) before calling your pdf method. Additionally, make sure to check your CSS for any @media print rules that could potentially hide elements during the rendering process, as the print context behaves differently from screen rendering.