I used to have an app (iOS) that stripped out any formatting and images and left only the text characters remaining. Is there still such an app? I must’ve deleted the old app.
I’ve searched a bit but keep getting texting apps, for text message communications. Not what I want.
I am certain there is an app, but you did not mention what was the format of the original file. For example, for PDF files there is pdftotext (& variations on this name). Or try one of the dragging or selecting gestures mentioned here: How to Get Text from PDF on iPhone and iPad with iOS 15
Microsoft Word has (or once had?) a menu option for that. When you copy text to one of Word’s internal clipboards, all formatting is preserved with it. But when you paste the same text somewhere else (within Word), there are two paste options – one that includes the formatting and one that removes all that.
It’s still in there. When you right-click where you want to paste, you’re given several options (depending on the clipboard content) and one of them is ‘keep text only’ which will paste the text in to match your current in-document formatting.
The suggestion upthread to paste into Notepad is pretty effective too and is something I do frequently. Not an operation I’ve tried performing on my phone so I’ve never researched methods for doing so. That being said, there is an MS Word smartphone app, and it also has the same pasting options.
Who even knows what “plain text” means any more? I’m an old school computer user, from the days when plain text was all there was. I have always had a lot of occasions to deal with plain text. (Which I now often refer to as “plain old plain text”.) And there are soooo many computer users these days who have no idea what that means.