PDF Split and Merge is a very simple, easy to use, free, open source utility to split and merge pdf files.
Basic version is very simple and stable. It’s completely free and it covers most of your needs.
Enhanced version is open source and has more features than the basic version. It’s “almost” free, you can download the source code, compile and use it or, if you think it’s worth it, you can make a donation.
This program received 5 awards
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This software pdf splitter and merger is a very high quality one, I as a Translator enjoyed it BEST.