Files app - How to remove password from .pdf that I added?

It appears that you cannot remove the lock in iOS, iPadOS, nor on a Mac. Found some discussion stating this is a known bug.

danniamm Said:

"Files app - How to remove password from .pdf that I added?: I apologize for being unclear: the pdf was a pdf before I added the password; I know the password as I created it and added it to the pdf within iOS; I wanted to know how to edit or remove the password from the pdf within iOS.”

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Getting this to Have no Password:

One workaround, would be to print the document in hard copy > scan it all back in > print it as a PDF document(located towards the bottom-left corner of the print-window that pops up). Is a result, it will be saved as a digital file, and no hard copy will be printed afterwards.

Unfortunately I don’t think you can remove or change the password, unless it asks you for Face ID or Passcode.

danniamm Said:

"Files app - How to remove password from .pdf that I added?: [...]Within the Files app, I accidentally locked a .pdf and added a password thinking that it would make it read-only. It obviously does not, just requires a password be used to access the file.[...]"

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Editing a Password for a PDF Document:

PDF is Post Data Format, making it uneditable. So, no, this is not an option. So, find the password where you would have stored it. If you can't find it, then find it in a file that was saved prior to this password creation.