PDFpen 4.5 makes use of edition 15.5 of the OmniPage OCR, restoring the Tesseract open-source OCR engine in PDFpen on Intel supported Macs. SmileOnMyMac lauded the OmniPage OCR engine for its accurateness.

Next to the innovative OCR engine, PDFpen 4.5 enables Snow Leopard customers scan openly into the software from Image Capture or else TWAIN scanners. There's also a fresh text highlighting tool that chooses as well as highlights text in a sole action.

The 4.5 update is free of charge for registered customer of PDFpen 4.x. The PDF editing software costs $50, with a Pro edition offered for $100. Both PDFpen as well as PDFpenPro run on Mac OS X 10.4 and later on.