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I already read the thread how to merge epub files but Is there any way by which I can merge different pdf files into one. Earlier I have tried an app for this purpose but I lost all my pdf files after merging.

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8 Answers 8

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For serious work with PDF, you can't stay away from Adobe Acrobat… still…

You might also look at Nitro.

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  • If Acrobat's price is a bit steep, Foxit's PhantomPDF offers similar functionality for a more reasonable price. I used it extensively at a previous job and highly recommend it. Mar 26, 2015 at 21:59
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After a long search, I have downloaded PDFmate to merge pdf files. It works nice. It is free as well as from a verified publisher.

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Use pdftk:

pdftk file1.pdf file2.pdf cat output combined.pdf
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  • 1
    I downloaded pdftk but it shows that its source is unknown and it is no safe to run programs from unknown sources as it can harm your computer.
    – Vibhu
    Mar 14, 2015 at 14:56
  • @Vibhu I just installed it with apt-get install pdftk on my Linux machine. You should install a VM if you are running Windows (or abandon Windows completely if your security concerns are serious).
    – Anthon
    Mar 14, 2015 at 15:09
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You can use

  • PDFsam, free and open source desktop application.
  • sejda.com, free web application application

Sejda also offers a command line version, free and open source.

Disclaimer: I'm one of the authors of all of them.

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  • Will it show the same thing - source is unknown , when I run it?
    – Vibhu
    Mar 16, 2015 at 7:21
  • I don't think I understand the question, can you clarify? Mar 16, 2015 at 16:16
  • After downloading PDFsam, when I run it, will the computer show that its source is unknown and it is not safe to run programs from unknown source? Or will it have any verified digital signature?
    – Vibhu
    Mar 16, 2015 at 19:58
  • The MSI installer is signed Mar 17, 2015 at 20:45
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If you use OS X then the included Preview.app allows merging.

Open up one pdf file and then choose via the menus Edit->Insert->Page From File...

This prompts for a file - choose the second pdf and it adds all the pages from it to the original.

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  • I use Window 7 (professinal).
    – Vibhu
    Mar 17, 2015 at 6:16
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Kvisoft PDF Merger , available only for 30 day trial. Pdf combine also works.

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I highly recommend you to use PDFsam, which also happens to be OpenSource (in its Basic installment). Here's a guide explaining what it can do, with a strong focus on the Alternate Mix feature which is one of its major strenghts.

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A shameless plug for other who may have this problem in the future:

I built a web tool to merge PDFs for when I needed to bundle up some files. It's free to use and does not upload your documents to a server, so they stay private.

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