8 Aug 2022 — It will ask for your PDFPen Pro registration info and you should be good to go. You supply you r email address and ask that Nitro/ TidBITS Talk
This version is associated with the transition period from PDFpenPro to Nitro and is no longer the current version (latest is v14+ in 2025/2026). Nitro PDF Pro Essentials 13.3.0
It is designed for Optical Character Recognition (making scans searchable) and general PDF editing on macOS. 8 Aug 2022 — It will ask for
If you are using 13.3.0 as a legacy license, it remains a capable tool for basic editing, form filling, and OCR on older macOS versions. However, for 2026, it is highly recommended to upgrade to Nitro PDF Pro 14 or higher for better security, performance, and compatibility. Nitro PDF Pro Essentials 13.3.0