Combining several PDF files into one can be a very daunting task if users do not have the right tool. Since this file type is very popular amongst many companies, thanks to its professional appearance and support to images, the Free PDF Combine can be considered for all such requirements. It is a tool that is very easy to use and even those who are not familiar with similar software can comprehend it without any issues. The functionality of the tool is quite simple. It merges any number of PDF files to one in very less time and does not hamper the quality in any way. This light weight app can be downloaded and installed onto any device that runs on Windows OS, notwithstanding the version. It is free from any malware and is absolutely safe to be used. The fact that the user interface of the Free PDF Combine is very straight forward is yet another feather in the cap. Once the software is initiated, users can start adding the files that need to be combined. They can select several files from a single folder using the drag and drop feature. The other thing which is impressive in the software is that users can navigate very easily. Adding bookmarks, removing files from the list, adding new ones can all be done with just a few clicks. Details such as names of files, sizes and number of pages are all displayed on the interface for the convenience of the users. When this is done, they need to choose the output folder and press on the 'Combine to PDF' button. The Free PDF Combiner even has a preview window which allows users to check the quality of the files. Things such as zooming in and zooming out the pages, fit them to width are also enabled.