Here is how I usually get this proble:
- I downloaded this this book
- Indexed it
- it works and everything is fine
- a few hours/days later it stops recognizing the words and instead recognizes words as different characters.
For example when I select the word “most” and copy/paste it, it pastes as “PRVW” and not “most”
I had this issue with only 2 medical pdfs I’ve downloaded online. Other medical pdfs work completely fine.
I have this issue with this specific book 3 times now.
Any help is appreciated
Welcome to the DRM world. I have same issues and normally the only way to resolve it is re-OCR them (with DT or with another program).
It happens with PDFs with DRM when:
- Annotate something
- Add/Remove pages
- Edit (change things).
Not always happens due bugs in macOS PDF framework, and it depends on what kind of DRM/Password protection file has and Moon phase.
Some similar issues discussed in this thread: PDF highlighting and file size
Unfortunately that discussion led only to workarounds, not solutions.
I did not know about this at all. Thank you very much