Free PDF Merge and Split with PDF Mix Tool – How to install PDF Mix Tool on Ubuntu
PDF Mix Tool is a free and open source PDF editor for linux. Using this simple easy to use tool you can merge, split and rotate your pdf files. It is released under the GNU GPLv3 license. You can also do some other works in this tool like delete pages from the pdf file, generating booklets, adding white pages to pdf file and you can extract pages from a PDF file. It is a Qt and qpdf based application.