NOTE: PDF generation is only supported in Chrome headless mode.
To generate a PDF with the `screen` media type, call [\`page.emulateMediaType('screen')\`](./puppeteer.page.emulatemediatype.md) before calling `page.pdf()`.
By default, `page.pdf()` generates a pdf with modified colors for printing. Use the [\`-webkit-print-color-adjust\`](https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-print-color-adjust) property to force rendering of exact colors.