Based on our record, Okular seems to be a lot more popular than IrfanView. While we know about 44 links to Okular, we've tracked only 3 mentions of IrfanView. 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 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: 5 months ago
I was in a similar position lately until I found Okular. Have you tried it? https://okular.kde.org/. - Source: Hacker News / 8 months ago
I would try Okular first, though, which is free and open source: https://okular.kde.org/. Source: 11 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 / 11 months ago
I use okular, don't think it has web export though. Source: about 1 year ago
It doesn't sound like you need animations or other effects here, just still images. If that's so, you could: Export the slides to high resolution images (at least high enough to match the highest resolution your projectors are capable of). Use a PC to drive each projector; the cheapest, oldest PC in the place will be more than adequate. Run a program that can fill the screen with an image (and if needed, switch... Source: 11 months ago
Scantailor (https://scantailor.org) is the tool for self-scanned books that exist in images (png, jpg, etc). However, I usually use Irfanview with PDF plugin (https://irfanview.com - download both Irfanview and the Plugins from this home page) I have elsewhere in r/PDF shown how you can do batch splitting of two-page scans, clean up muddy pages (yellowed or browned) . In the Reddit search box, search for... Source: about 1 year ago
From there, open your favorite image editor (I use & recommend irfanView BTW 😁) & paste it there. Then save it (I HIGHLY recommend saving it as a JPEG file). Source: over 2 years ago
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