UnityPDF

Unless you pay for Adobe's Acrobat reader, you can't manipulate PDFs in any way. Fortunately, there are many alternatives out there. A good example is UnityPDF. It allows you to merge or split PDFs, extract pages or insert them wherever you want. The application's simple design and straightforward functionality make this operation as easy as possible.

UnityPDF is available for all popular Windows versions and it is offered free of charge. Installing the application doesn't involve any complex settings and it takes only a few seconds to complete the operation. It can be launched right away, without installing any prerequisite tools.

The application comes with a clean and efficient user interface. All you have to do is load one or more PDFs and click one of the buttons, located on a toolbar, depending on what operation you wish to perform. The imported files can be merged into a single document, but it is also possible to split them and save their pages as separate files. Additionally, you can divide your documents in two or more parts.

Besides merging or splitting entire documents, it is also possible to extract specific pages. You only need to specify a page range, on a small window and click a button to extract them. The operation can be performed in reverse as well. Once you import a PDF, you can insert the pages of another document, before the first page, after the last page or insert them before or after a page of your choice.

Securing documents is another possibility. The application allows you to password-protect your documents and restrict certain features, like printing or copying their contents and others. Furthermore, UnityPDF can retrieve and display a loaded document's metadata, which can be erased instantly, with a single click.