| Nitro PDF Pro | |
|---|---|
 The Nitro PDF Pro logo | |
| Developers | Nitro Software, Inc. |
| Stable release | 14.39.0.18
/ 26 June 2025 (2025-06-26)1 |
| Operating system | Microsoft Windows iOS |
| Available in | English |
| Type | Desktop publishing software |
| License | Trialware |
| Website | www |
Nitro PDF Pro is a Portable Document Format (PDF) editing application2 and electronic signature software.3
History
Nitro Software was founded in Melbourne, Australia in 20054 to develop an alternative PDF software to Adobe Acrobat.5
In 2015, the company had sold 1 million licenses.5
In June 2021, the company acquired PDFPen, a PDF editing app for Mac, iPad, and iPhone.6
Controversy
In May 2025, the company sent a letter to all owners of perpetual licenses older than version 13, informing them that their previously lifetime license will be deactivated unless they upgraded to a subscription model.7
As of June 2025, Nitro Software was graded F by the Better Business Bureau for the company's failure to respond to customer complaints.8 As a result, Nitro Software is no longer rated by Better Business Bureau.9
References
References
- "Nitro Pro Release Notes | Details on New Features, Bug Fixes". gonitro.com. Retrieved 2025-07-02.
- "Nitro Pro 12 review: A better document workflow". PC Magazine. Retrieved 31 October 2018.
- "Nitro PDF Pro". The University of Melbourne. Retrieved August 15, 2024.
- "Nitro - Potentia". potentiacap.com.
- "The Nitro Story". gonitro.com.
- Lovejoy, Ben (2021-06-28). "PDFpen app sold to Nitro, while developer Smile retains TextExpander". 9to5Mac. Retrieved 2022-06-08.
- "Nitro intends to deactivate older licences - not acceptable!". Nitro Community Forums. 2025-05-08. Retrieved 2025-06-01.
- "Nitro Software Inc. | BBB Business Profile | Better Business Bureau". www.bbb.org. Archived from the original on 2025-04-25. Retrieved 2025-08-02.
- "Nitro Software Inc. | BBB Business Profile | Better Business Bureau". www.bbb.org. Retrieved 2025-08-02.