IronPDF for Python can convert online webpages into PDFs.

This code example uses the RenderUrlAsPdf method in Java. The method will return PdfDocument object which can then be exported using saveAs method.

PdfDocument.renderUrlAsPdf accepts a String containing an absolute (fully formed) URL to a web page. IronPDF will retrieve the HTML content returned from an HTTP request for the URL and faithfully transform it into its PDF version. Developers can supply login credentials (username and password) that renderUrlAsPdf can use for this HTTP request by including an ChromeHttpLoginCredentials object as an optional, second parameter. This is useful for accessing web pages locked within a password-protected website directory. Refer to the API Reference for more information about the ChromeHttpLoginCredentials class.

It is really a brilliant way to download PDF from URL in Java.

Watch this video for additional information.

Also, see the ChromePdfRenderOptions API Reference page for details on how to customize the look and feel of PDF documents midway through their conversion from HTML web pages.