User interface is not so good and like a random button collection.

You can add PDF files individually or add all files of a particular folder to merge.

You can reorder pages before combining.You can merge or combine two or more PDF files in a single PDF file.

PDFill Free PDF Tools is a piece of free software to merge PDF files easily. Since PDFsam is a Java application, it will run on any operating system that supports Java.PDFsam basic version is a free open source and platform independent software that can mix, merge, extract, split and rotate pages by specifying the page numbers.

Enable you to set viewer preferences and document properties, including title, author, subject and keywords.JPDF Tweak is one of the freeware that get the maximum number of features: Merge, split, record, rotate, watermark and format. Support processing your PDF operations in batch.Merging of multiple PDF files into one is one of them. PDF Shaper is a free PDF merger application that lets you do various operations with PDF files. Following are 8 free PDF merger tools, the first 4 are freeware and the others are free online service. Have multiple PDF files and need to merge into one? There are lots of solid freeware and online websites that can merge or combine two or more PDF files.

Totally free pdf merger