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::: Okular - your THE document viewer from KDE 📝

PDF documents, comics & EPub books... Browse images, visualize markdown documents... Even edit right there...

Annotate PDFs - easily add inline / popup notes, highlight, underline text, or add your own!

Okular is right there to click 'n' install on the software center of any established Linux OS - such as Ubuntu & Linux Mint.

Flatpak in any case => flathub.org/apps/details/org.k

flathub.orgFlathub—An app store and build service for LinuxFind and install hundreds of apps and games for Linux. Enjoy GIMP, GNU Octave, Spotify, Steam and many more!
#PDF#Okular#KDE

Yes! I've just managed to change the PDF viewer in #Firefox to have light grey text on a dark grey background, rather than the white background that hurts my poor eyes. (The UI is already dark mode, thanks to ShadowFox.)

In ~/.mozilla/firefox/[profile name]/chrome/userContent.css:

@-moz-document regexp(".*\\.(p|P)(d|D)(f|F).*") {
#viewer.pdfViewer > .page {
filter: invert() hue-rotate(180deg) contrast(0.8);
}
}