Also, as Hints reader sudo points out, in Mail you can also save selected messages as Raw Message Source (instead of Rich Text), producing Unix-friendly mbox text files.

Foxit Reader not only allows you to view your PDF files, but can also read them aloud using its text to speech feature. In order to configure this feature, follow the steps below.

Need to edit a PDF document but don’t want to pay for the more expensive Adobe editors? You can add text to and sign a PDF with just the free Reader program.

GoodReader is a PDF and text file reader. I’ve been using it for awhile now to enjoy reading books during my commute, and I’ve found it almost perfectly adequate. The biggest selling point for ...

ElevenLabs is a startup that launched an AI text-to-speech e-reading app globally. It supports 32 different languages from all over the world. The main selling point is that it can read PDF files ...

Also, as Hints reader sudo points out, in Mail you can also save selected messages as Raw Message Source (instead of Rich Text), producing Unix-friendly mbox text files.

Uploading a PDF file with visuals and graphics from my iOS Files app to the ElevenLabs iOS Reader app took a few seconds in my testing, and the app stripped out all the visuals, displaying only text.

GoodReader A PDF and text file reader app, GoodReader, features a unique Reflow feature which has become its exclusive selling point.

If you want to extract highlighted text from PDF file as a plain text file, then this post covers some good free PDF Highlight Extractor software to do that.