The available OCR plug-in can recognize text which you can edit, copy and search from scanned PDF. With PDF Editor Pro for Mac, you can edit scanned PDF documents directly such as add annotation, mark up with drawing, add text and images, etc.

Video Demo:

Code:

youtube.com/watch?v=FxwV-AIPjYw

This video tutorial covers:
1. Perform OCR on scanned PDF
2. Modify/Add Text in scanned PDF
3. Annotate scanned PDF
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PDF Editor Pro for Mac

* Create industry-standard PDF files from web pages, images, and text files
* Edit PDF text, images, watermark, and pages with full editing features
* Comment with a collection of annotation and mark up tools
* Convert PDF files to multiple types of documents for reuse
* Leading-edge OCR digitizes text in image-based PDF files
* Quick sign PDF documents with handwritten signatures
* Fill out PDF forms and Customize PDF forms from templates

More Info:

Code:

pdf-converter-mac.net/pdf-editor/

Introduction of PDF Editor Pro for Mac:

Code:

youtube.com/watch?v=FZhLFjsUEXk