Max Nikulin writes: > P.S. Concerning free PDF annotation tool, I have not tested if it is > convenient and available on Android, but Firefox-106 release notes > have the following entry: > >> It is now possible to edit PDFs: including writing text, drawing, > and adding signatures. > > Almost certainly "edit" in their parlance in namely annotations, not > real changes of PDF structure.
Interesting, I'll take a look at it. I haven't used firefox as my default browser in a while. On desktop and laptop I use a combination of Eww and Qutebrowser, which is more keyboard oriented. I have Firefox almost relegated to negotiations with the Spanish government, such as taxes and little else. On mobile I use Brave browser. And lately I've noticed that it's not as hard as I thought to navigate with Eww-mode in Termux/Emacs by touch! :-) BTW, I have found another free app to annotate PDF on Android, KOReader: https://f-droid.org/en/packages/org.koreader.launcher.fdroid/ It is mainly intended for e-ink screen e-readers. It's under active development as well (https://github.com/koreader), and even offers builds and tutorials for installing it on specific non-Android devices (Kobo, reMarkable, etc.). I have tried to make some annotations on a PDF to open it later on the desktop pc. Annotations are correctly read by pdf-tools, Atril, Evince, Okular, etc. And they are also exported correctly to Org via the org-noter function org-noter-create-skeleton, which I didn't know about and is tremendously useful. Best regards, Juan Manuel