Based on our record, Okular seems to be a lot more popular than PDF to Text. While we know about 44 links to Okular, we've tracked only 1 mention of PDF to Text. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
If you still want to proceed, I suggest you first manually convert each pdf to a .txt file with https://pdftotext.com/. I tried working with the actual monster manual pdf and it's a big mess. Although it looks pretty in a pdf viewer, the textual representation is highly irregular. The .txt version I got from that website is nice. Source: over 2 years ago
If you mean signing as in "signing with your handwritten signature", you could use Okular () which easily allows you to do that. Filling out forms also works nicely. Source: 6 months ago
I was in a similar position lately until I found Okular. Have you tried it? https://okular.kde.org/. - Source: Hacker News / 9 months ago
I would try Okular first, though, which is free and open source: https://okular.kde.org/. Source: 12 months ago
KDE's okular might be a good choice. I haven't personally used it for epub but I know it supports it. https://okular.kde.org/. - Source: Hacker News / about 1 year ago
I use okular, don't think it has web export though. Source: about 1 year ago
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