An executable program to build your own PDFs: merge PDF files or select only the pages you need to compose your file.
Do you need to combine multiple PDF files? Do not use sketchy websites! Use PDFriend: an executable program to edit work with your files locally. PDFriend has an easy GUI to make you combine your PDFs as desired. Select your files, even only a part of them, adjust your order and build your own PDF.
No installation is required: just open the executable file in the release section. Do not give your data to the first website you find! Build your own PDF locally, even offline!