If you registered the software with an email, your serial is stored online.
Steps:
✅ Best for: Direct purchases from Nitro
Nitro sends the serial number in the purchase confirmation email.
Search terms in your email:
Check:
📧 Email subject example:
“Thank you for your Nitro Pro purchase” or “Nitro Pro license information”
If the above fails, use a trusted license recovery tool (but be careful with downloads): how to find my nitro pro serial number
These tools scan installed software and can sometimes retrieve Nitro Pro serials.
⚠️ Run antivirus scan after downloading such tools.
If Nitro Pro is installed but you can’t open it, try the Registry.
⚠️ Caution: Only view – do not edit unless you know what you’re doing.
Steps:
Double-click to view the serial number.
🪟 For 32-bit Nitro on 64-bit Windows:
CheckHKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Nitro\Pro\...If you registered the software with an email,
If Nitro Pro is currently installed and activated on your computer, you can find the number directly within the application interface. Note that this works best for versions prior to Nitro Pro 13.
For Nitro Pro 12 and older:
For Nitro Pro 13: Nitro Pro 13 and newer versions utilize a "Sign In" model. If you have version 13 or later, you typically do not use a serial number; instead, you simply sign in with the email and password you used to purchase the license.
Did you buy a physical boxed copy of Nitro Pro from a store like Staples or Best Buy? Your serial number is not on the CD—it is on a card or sticker inside the box.
For physical purchases:
If you can’t find it, contact Nitro Support with your purchase details so they can help recover your serial.
Finding your Nitro Pro serial number depends on whether you have a subscription-based or a perpetual (one-time purchase) license. For security reasons, the full serial number is often hidden within the software itself 1. Check Your Email (Most Reliable) ✅ Best for: Direct purchases from Nitro
The most common way to find your serial number is to search the email account you used for the purchase. Search Terms
: Look for "Nitro Pro," "Nitro PDF," "Cleverbridge" (their payment processor), or "Invoice". : Emails usually come from cs@cleverbridge.com or previously from Subject Line
: Typically starts with "Reference #xxxxxxx: Your Nitro Pro order". 2. Check the Nitro Portal or Account
If you have a newer version or a subscription, your activation might be account-based rather than serial-based. Subscription Users : Sign in to the Nitro Licensing Portal using your email to view your active licenses. In-App Login
: Open Nitro Pro and look at the top right corner. If you can log in, your license is likely tied to your account and doesn't require a manual serial number. 3. Retrieve from Your Machine (Older Versions Only)
While newer versions (v12 build 13 and later) encrypt the serial number for security, older versions may still store it locally. Inside Nitro Pro : Go to the About Nitro Pro . If you see a number like 504945XXXXXXXXXXXX , the full key is hidden and you must use Method 1 or 2. Windows Registry (v6 or older) : You can sometimes find it at: HKEY_LOCAL_MACHINE\SOFTWARE\Nitro\Pro\Version Spiceworks Community 4. Other Locations Activating Nitro PDF Pro
Here’s a concise, helpful review-style guide on how to find your Nitro Pro serial number, written as if from a software user who’s figured it out.