Quote: ....I assume it must be incorporated into the main program by now.
Dangerous assumption for a not-too-popular format (apart from scientific / academic circles)
Very easy to compile for linux, Windows I do not not know. Pulled a pre-compiled Windows version that works from my archive.
Just too large to attach here, so from my storage
https://u.pcloud.link/publink/show?code=...gptLEkcquX
Unzip and put the djvu folder, containing the two files djvu.exe libdjvulibre-21.dll in your Gimp 2.10 plugins folder
C:\Users\"yourname"\AppData\Roaming\GIMP\2.10\plug-ins
Not very convenient for multi-page files, you have to open each page individually
40 second example Win10 / Gimp 2.10.30. https://i.imgur.com/cgXTcSE.mp4
A better bet might be XnViewMP which opens djvu files.