I love this pdf converter!

I really like being able to convert information from various sources into one standard format — pdf — and then save it in the Documents app, where I can organize articles/info as I like, and even modify it if necessary.

It allows me to have my own private library where I can easily find information I need.

A very good investment. I recommend looking for a Readdle package that suits your needs.

TippiDee about PDF Converter by Readdle, v2.3.4