Nitro PDF is a software application designed for creating, editing, and managing PDF documents. It offers a user-friendly interface that allows users to convert files from various formats into PDF and vice versa. The software also includes features for annotating, reviewing, and collaborating on documents, making it suitable for both individual and business use. In addition to basic editing tools, Nitro PDF provides advanced functionalities such as form creation, digital signatures, and security options to protect sensitive information. Its integration with cloud services enables easy access and sharing of PDF files across different devices, enhancing productivity and collaboration.