PDFSecure

PDFTron's PDFSecure is a reliable tool that can function both as a stand-alone program and a software component with which you add, remove, or modify security preference on PDF documents and even entire folders.

PDFSecure can also be used to modify document information metadata and to web-optimized PDF documents through a process known as linearization.

The app is presented as a command-line application (CMD), and as a library component that can be used as a building block for other client and server-based applications. It can come in handy for developers that build apps that work with PDF and want to add this tool as a main or extra feature.

To highlight a couple of commands, the app can Encrypt any PDF document or entire directories using the Advanced Encryption Standard (AES) and Crypt filters. Also, any PDF is encrypted by the standard PDF 40 and 128 RC4 encryption.

You can use PDFSecure to modify the security settings for any files. For example, you can change passwords, implement new ones and remove others.

In conclusion, PDFSecure is a neat app that can help with the management of PDF files and can also be integrated with a new app in order to boost its features and capabilities.