A while back, my boss asked me to put our company's 200-plus-page product manual on the official website: it had to support page-turning, work on mobile, and keep the spec tables crystal clear when zoomed in. I tried several flipbook e-book tools, but the exported text came out blurry, or the free version only allowed the first 10 pages with other people's ads plastered on them. Then I tried FLBOOK once — upload, convert, publish — and not a single "please upgrade to membership" prompt appeared the whole time. That's when I realized this never had to cost a cent. Before uploading, first identify: what kind of PDF do you have? PDFs fall into two categories: scanned documents (which are essentially