PDF corruption
My pdf files are going corrupted one by one.. they open when I download them, but after using the marking tools they go corrupted. I tried to repair them online, and open them using pdf readr, and I opened them using the book app, nothing worked.
my iPad is iPad Air 5 and I updated it to iOS 17 after my pdfs started corruption, but the problem wasn’t solved.
what do I do? Could it be a virus?
iPad Air