Approx. 300 MB of available space for installation Display: 1024x768 screen resolution Conclusion
Because this is a legacy "Final" release, it is no longer distributed via Nitro’s official website (they now push version 13/14 with subscriptions). If you possess a valid license key or a digital installer archive, follow these steps:
| Task | x86 (32-bit) | x64 (64-bit) | | :--- | :--- | :--- | | | 2.4 seconds | 2.6 seconds | | OCR (300dpi, 200 pages) | 4 minutes 22 seconds | 1 minute 55 seconds | | Export to Word (full doc) | 1 min 12 sec | 38 seconds | | RAM usage during OCR | 3.2 GB | 5.1 GB | | Scrolling smoothness | Good | Excellent (no stutter) | nitro pro 9.5.1.5 final -x86-x64-
: Protect sensitive information with 256-bit AES encryption , password protection, and permanent redaction tools.
Restrict unauthorized users from opening, printing, copying, or altering documents using secure AES encryption keys. Approx
As of 2026, Nitro Pro 9.5.1.5 is considered a under Nitro's Sunset Policy . Unable to install Nitro 9 on Windows 11
You can download Nitro Pro 9.5.1.5 Final x86/x64 from the official website or from other reliable sources. Make sure to choose the correct version (x86 or x64) that matches your system architecture. Make sure to choose the correct version (x86
Windows XP, Vista, 7, 8, 8.1, 10, and Windows Server environments x86 vs. x64 Performance Benefits
The demand for reliable, secure, and lightning-fast PDF editing software is higher than ever. While Adobe Acrobat has long been the default industry standard, many professionals and businesses actively seek alternatives that offer identical powerhouse features without the steep subscription costs or heavy system resource consumption.
October 2014 (Release Era) Category: Document Management / PDF Productivity Platform: Windows (32-bit & 64-bit)
You cannot install the x86 and x64 versions side-by-side. You must choose the correct architecture for your OS during installation.