Is there a way to bulk change hidden text font of PDF?

[jaepilc36669029]

PDF file is not displaying on iOS properly and I suspect unsupported font is causing the problem.

Is there a way to bulk change the font of hidden text of a scanned document that's been OCRed?

Note that I'm NOT asking how to edit the visible, scanned text. I want to change hidden text's font so that it doesn't contain weird font anymore.

[Bernd Alheit]

What happens when you use Acrobat Reader on iOS?

[jaepilc36669029]

It opens. iOS's default PDF viewer seems to have trouble opening up the PDF file properly but Adobe Acrobat on iOS and some other apps like Polaris Office can still open it.

But the problem is that the majority of iOS pdf notetaking apps just use the default Apple PDF renderer so this problem is prevalent on iOS apps.

[Bernd Alheit]

Then contact the support of Apple.

[jaepilc36669029]

That's not helpful at all. I asked how I can bulk change hidden texts in PDF which is not about Apple but about Adobe Acrobat functionality.

I would love it if Apple patches it but they don't and that's why I'm looking for a solution.