All in one pdf tool which is available online, free and easy to use with multiple conversions available

I have to say I use 2PDF frequently to combine various documents into a single document in order to bundle several of my articles and reports together into a single PDF for peer review. The drag-and-drop interface makes the process extremely user-friendly and saves me literally hours of time from doing this manually. In addition to combining documents, I also write many of my own articles, save them as PDFs and have them ready to read on my Kindle at a later date. Also, being able to easily edit titles and keywords is very helpful when trying to stay organized when managing large quantities of documents.

This is super helpful for splitting or merging PDF documents in daily life.