If you just need a readable copy and don’t care about perfect image quality, you can "print" each page to PDF.
Browser extensions can often force the viewer to display the original PDF file. download yumpu pdf free
First, Yumpu itself does not offer a free PDF download for most publications unless the uploader enables it. So any tool or website claiming to bypass that is sketchy at best. I tried one of those "free Yumpu downloader" sites. It worked for a short, low-resolution document, but for a longer magazine-style PDF, the output was poorly formatted – missing images and broken text. If you just need a readable copy and