Answers.Body: <p>For serious work with PDF, you can't stay away from Adobe Acrobat… still…</p>
  
  <p>You might also look at Nitro.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-26T21:59:11.770Z
Answers.Text: 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.
Answers.UserDisplayName: Nathan Osman
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-14T16:13:43.823Z
Answers.LastActivityDate: 2015-03-14T16:13:43.823Z
Answers.UserDisplayName: Max Wyss
Answers.Body: <p>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.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-20T05:40:26.517Z
Answers.LastActivityDate: 2015-03-21T05:10:11.407Z
Answers.LastEditDate: 2015-03-21T05:10:11.407Z
Answers.UserDisplayName: Vibhu
Answers.Body: <p>Use <code>pdftk</code>:</p>
  
  <pre><code>pdftk file1.pdf file2.pdf cat output combined.pdf
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-14T14:56:09.013Z
Answers.Text: 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.
Answers.UserDisplayName: Vibhu
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-14T15:09:16.390Z
Answers.Text: @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).
Answers.UserDisplayName: Anthon
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-14T13:02:48.440Z
Answers.LastActivityDate: 2015-03-14T13:02:48.440Z
Answers.UserDisplayName: Anthon
Answers.Body: <p>You can use </p>
  
  <ul>
  <li><a href="http://www.pdfsam.org/" rel="nofollow">PDFsam</a>, free and open source desktop application. </li>
  <li><a href="https://sejda.com/" rel="nofollow">sejda.com</a>, free web application application</li>
  </ul>
  
  <p>Sejda also offers a command line version, free and open source.</p>
  
  <p>Disclaimer: I'm one of the authors of all of them.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-16T07:21:21.730Z
Answers.Text: Will it show the same thing - source is unknown , when I run it?
Answers.UserDisplayName: Vibhu
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-16T16:16:07.083Z
Answers.Text: I don't think I understand the question, can you clarify?
Answers.UserDisplayName: Andrea Vacondio
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-16T19:58:10.537Z
Answers.Text: 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?
Answers.UserDisplayName: Vibhu
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-17T20:45:15.097Z
Answers.Text: The [MSI installer](http://sourceforge.net/projects/pdfsam/files/pdfsam/2.2.4/pdfsam-v2_2_4.msi/download) is signed
Answers.UserDisplayName: Andrea Vacondio
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-15T19:09:28.340Z
Answers.LastActivityDate: 2015-03-15T19:09:28.340Z
Answers.UserDisplayName: Andrea Vacondio
Answers.Body: <p>I highly recommend you to use <a href="http://www.pdfsam.org/" rel="nofollow">PDFsam</a>, which also happens to be <em>OpenSource</em> (in its Basic installment). <a href="http://www.ryadel.com/en/scan-both-sides-of-a-front-back-document-in-a-single-pdf-with-pdfsam/" rel="nofollow">Here's a guide</a> explaining what it can do, with a strong focus on the <em>Alternate Mix</em> feature which is one of its major strenghts.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-10-24T22:55:00.390Z
Answers.LastActivityDate: 2016-10-24T22:55:00.390Z
Answers.UserDisplayName: Darkseal
Answers.Body: <p>If you use OS X then the included Preview.app allows merging.</p>
  
  <p>Open up one pdf file and then choose via the menus Edit->Insert->Page From File...</p>
  
  <p>This prompts for a file - choose the second pdf and it adds all the pages from it to the original.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-17T06:16:48.333Z
Answers.Text: I use Window 7 (professinal).
Answers.UserDisplayName: Vibhu
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-17T01:07:22.773Z
Answers.LastActivityDate: 2015-03-17T01:07:22.773Z
Answers.UserDisplayName: mmmmmm
Answers.Body: <p>Kvisoft PDF Merger , available only for 30 day trial. Pdf combine also works.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-03-22T14:59:41.937Z
Answers.LastActivityDate: 2015-03-22T14:59:41.937Z
Answers.UserDisplayName: Prabhav
Answers.Body: <p>A shameless plug for other who may have this problem in the future:</p>
  <p>I built a <a href="https://typst.app/tools/merge-pdf/" rel="nofollow noreferrer">web tool to merge PDFs</a> 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.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-09-17T09:25:43.397Z
Answers.LastActivityDate: 2023-09-17T09:25:43.397Z
Answers.UserDisplayName: Martin
Body: <p>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.</p>
  
Tags: <pdf>
Title: Merge PDF files
UserDisplayName: Vibhu
ThreadText: # Merge PDF files
  
  (Asked by: username_0 on 2015-03-14)
  
  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.
  
  **Tags:** pdf
  
  
  ---
  
  ## 8 answers
  
  ### Answer by username_1 on 2015-03-14. Score: 2 | Accepted answer
  
  For serious work with PDF, you can't stay away from Adobe Acrobat… still…
  
  You might also look at Nitro.
  
  > **Comments:**
  > **username_2**: 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.  
  
  ---
  
  ### Answer by username_0 on 2015-03-20. Score: 4
  
  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.
  
  
  ---
  
  ### Answer by username_3 on 2015-03-14. Score: 2
  
  Use `pdftk`:
  
  ```
  pdftk file1.pdf file2.pdf cat output combined.pdf
  
  ```
  
  > **Comments:**
  > **username_0**: 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.  
  > **username_3**: @username_0 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).  
  
  ---
  
  ### Answer by username_4 on 2015-03-15. Score: 2
  
  You can use
  
  * [PDFsam](http://www.pdfsam.org/), free and open source desktop application.
  * [sejda.com](https://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.
  
  > **Comments:**
  > **username_0**: Will it show the same thing - source is unknown , when I run it?  
  > **username_4**: I don't think I understand the question, can you clarify?  
  > **username_0**: 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?  
  > **username_4**: The [MSI installer](http://sourceforge.net/projects/pdfsam/files/pdfsam/2.2.4/pdfsam-v2_2_4.msi/download) is signed  
  
  ---
  
  ### Answer by username_5 on 2016-10-24. Score: 1
  
  I highly recommend you to use [PDFsam](http://www.pdfsam.org/), which also happens to be *OpenSource* (in its Basic installment). [Here's a guide](http://www.ryadel.com/en/scan-both-sides-of-a-front-back-document-in-a-single-pdf-with-pdfsam/) explaining what it can do, with a strong focus on the *Alternate Mix* feature which is one of its major strenghts.
  
  
  ---
  
  ### Answer by username_6 on 2015-03-17. Score: 1
  
  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.
  
  > **Comments:**
  > **username_0**: I use Window 7 (professinal).  
  
  ---
  
  ### Answer by username_7 on 2015-03-22. Score: 1
  
  Kvisoft PDF Merger , available only for 30 day trial. Pdf combine also works.
  
  
  ---
  
  ### Answer by username_8 on 2023-09-17. Score: 0
  
  A shameless plug for other who may have this problem in the future:
  
  I built a [web tool to merge PDFs](https://typst.app/tools/merge-pdf/) 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.
  
  
  ---
  
  