Converting a JavaScript-Rendered Web Page to PDF

Converting a JavaScript-rendered web page to PDF requires a real browser engine that runs JavaScript and waits for the page to settle. Puppeteer is a suitable solution, which drives a headless Chromium browser to execute the page like a normal Chrome tab. This approach is necessary to capture the rendered content, rather than the empty state of the page. To use Puppeteer, launch a browser, navigate to the page, and then capture the PDF. The key options are 'waitUntil' to wait for network idle and 'printBackground' to include background colors and images.