If you want to edit text content on a scanned PDF, have a try with PDFelement. The program performs OCR on scanned PDF file automatically to make the text editable. After that, you can edit the PDF text freely as you like.
Also you can do with PDFelement:
Change text & images and modify the pages of PDF;
Convert PDF files to Word, Excel, Image, Text and more;
Create PDF files with Word, Text, PowerPoint, Image, etc.