Product documentation

Nitro PDF account

Access your Nitro PDF account to submit Expert Support queries, register Nitro PDF products, manage your personal information and more.

+support

Nitro PDF +support offers you prompt, one-on-one technical support for the times when you need answers fast.

Special offers and updates

Sign up to receive occasional email notifications of product updates and special offers.


Your email :

User Guide

The Nitro PDF Professional 5x user guide covers in depth every feature and function of Nitro PDF Professional. Nitro PDF Professional comes installed with the same help — to view it in Nitro Pro, go to Help > User Guide. To view it online, follow the links below:

Download Printable User Guide

A downloadable print version of the Nitro PDF Professoinal 5x user guide is also available. Right-click on the link below and choose the Save Target As or Save Link As option.

Knowledgebase

The Nitro PDF Professional knowledgebase collects how-to articles, answers to commonly-asked questions, bug workarounds and more.