Step 1: Download the Installer
Go to the official ABBYY download page: abbyy.com/finereader-pdf-mac-downloads/
Download the installer and open the .dmg file
Drag ABBYY FineReader PDF into your Applications folder
Launch the program
Step 2: Enter Your Serial Number
When the program launches, an Activation Wizard will appear automatically
If it does not appear, click on the menu: ABBYY FineReader PDF → Activate
Enter your serial number (format: XXXX-YYYY-YYYY-YYYY-YYYY-YYYY) and click Activate
Step 3: Activate Over the Internet
Select the activation method "Via the Internet" and click Next
Optionally fill in the registration form (recommended — allows you to recover your serial number if lost)
Click Next to complete the activation process