Telegram: usar el visor de PDF predeterminado en KDE Plasma. - Milanga Electrónica
Why Okular show highlight text colourless? • KDE Community Forums
Linux Mint - Community
11.10 - How to make annotations on .PDF files like on Okular, but without using Okular? What .PDF viewer should I use? - Ask Ubuntu
Request for preview of highlights/notes in annotations tab of okular that is a bit more expressive then just generic text "highlight", a bit like zotero guyz are doing it : r/kde