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.

If you need to edit PDF on iPhone in a hurry, you can do so without having to install any new app. Just use the native Files app. Let's show you how.

You can convert PUB files to PDF using the Microsoft Publisher software itself or use the free online Publisher to PDF converter tool.

Instead, you will first need to either convert it to a Word or Google document, or copy the entire text into a separate .txt file. Once that's done, follow these steps: ...

Convert PDF files to other document types and retain their formatting with this relatively inexpensive utility.