If you upload a PDF or JPEG that has text on it - you know that it is a picture and you can not edit it. However, there is a little trick that allows you to take that file and Google finds the text and creates it into an editable Google Doc.
Here is a quick way to do it.
Upload file > right click on file (or select three dots) > select Open with > select Google Docs
Embedded below is a GIF followed by a 58 second YouTube tutorial.