I have several pdf file that is corrupted/damaged.
The app "GoodReader" on my iPad have the capability to repair corrupted pdf. (Do it automatically if pdf can't open)
I have been trying to open the corrupted/damaged in Okular, E-book viewer, PDF Viewer on my Raspberry pi 4 with no luck.
My question is,
what software can automatically repair corrupted/damaged pdf on Raspberry pi 4?