Some desktop PDF editors allow you to capture screen scrolls. You can scroll through the document and use a scrolling screenshot tool to capture the entire page, then convert it back to PDF using an OCR (Optical Character Recognition) tool.
on Greasy Fork allows users to "Load all pages" and then save the resulting images as a single PDF. Bookmarklets: doc88 downloader verified
Before you download any software, you must understand what "verified" implies. In the context of Doc88 tools, "verified" typically means three things: Some desktop PDF editors allow you to capture screen scrolls