How to Merge PDF Files for Free


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Yes, you likely have PDFs scattered across your hard drive. What do you do when you want to merge one PDF with another? Unless you buy expensive software, it’s impossible – unless you use MergePDF. This service enables you to combine multiple PDF documents into a single one, free of charge.

You can easily merge up to ten separate PDF documents into one new one. Select the files you want to merge, using the “Pick Files” button, and then click the “Merge PDF!” button. The service does the work for you. The only caveat is that individual file size has to be less than 5MB. Additionally, the site creators are very security conscious:

Although this service is free, we take security of data very seriously. The uploaded files and the resulting files (the merged ones) are removed after they have been downloaded. The only thing that is not safe in itself is the data transfer as we are not transferring through SSL.

So if you need to combine several PDF documents into one new one, be sure to check out the free MergePDF service. This is another service that you’ll soon wonder how you ever managed without it! And remember that good software needs great hardware to run on!

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35 thoughts on “How to Merge PDF Files for Free”

  1. I recently had to merge some pdfs and found pdftk (http://www.pdfhacks.com/pdftk/), which is not an online service, but a small download with versions for windows, linux and mac, also free and with no limtations, unlike mergePDF. It runs in text mode (ie, in an msdos window, if using windows), but still, it’s easy to use.

  2. I tried to use that website mentioned here, but it kept giving me an error (I think it could be because the pdf document I was trying to join contained non-English characters. So I found another open source program (www.pdfsam.org) which does the job wonderfully.

  3. Thank you so much for posting this! MergePDF is such a great program and is exactly what I was looking for!

  4. PDF Sam, http://www.pdfsam.org/ works wonders. Is free, JAVA based (so it should work on most platforms, there is a windows executive). Merges files fast and reliably.

    just take the Basic version, should cover most needs. It has other functions too.

  5. I trieed the pdg merge tool mentioned and it didi not merge the file. showed the size files to be 0;00 and caused the green line at bottom of page to blink over and over what do i do>

  6. I am trying to merge 3 one page PDFs using mergepdf.net but it isn’t working.
    The green status bar at the bottom of the page keeps blinking but the website isn’t doing anything or giving me a merged PDF.

    Please help before I pull out all my hair! :-/

  7. Thank you so much for your post! I tried MergePDF and it worked quickly and accurately. By the way, the pages that were merged had both English letters and Chinese characters.

  8. Awesome Chris, exactly what I needed today.

    Used to read lockergnome religiously but have not in years, don’t know if it’s still going

  9. Doesn’t work for files when one file is positioned like landscape and the other one is positioned like portrait.

  10. Is there any software that doesn’t cost an arm and a leg that combines up to 200 pdf files into one

  11. Re: David.

    David, If you’re on the Mac, you can try Batch PDF Merger which will whip though hundreds of PDF files in no time. The interface is very simple: drop your files into the window, rearrange them to your liking, and hit merge.

    Can’t get any simpler! And, it costs $9.95

  12. I trieed the pdg merge tool mentioned and it didi not merge the file. Then I tried again with another file it did work! It seems that it will merge randomly or is it not in a stable status?
    I need batch merge my files as a part of my workflow, so I found a good suff which is a desktop one, and I am able to merge pdf files in more flexible ways.
    http://www.convertpdf.org/pdf-merger
    It does decent jobs!

  13. PDF Studio isn’t free, but for less than $100 it not only merges PDF files, it allows you full annotation, splitting, digital signing, convert to/from images…

      1. Having spent decades at Sun, I understand that those totally immersed in technology are readily able to build their own tools from the free parts that exist. For the rest of the working world, looking for reasonably priced tools that will reliably perform certain functions to enable their business activities, a tool like PDF Studio can be perfect. Our global customer base tells us all the time how much they appreciate being able to download our software, run it on all platforms, and gain the ability to do what they need to with PDF documents, including merge files of various types, split giant PDFs, and more.

      2. Having spent decades at Sun, I understand that those totally immersed in technology are readily able to build their own tools from the free parts that exist. For the rest of the working world, looking for reasonably priced tools that will reliably perform certain functions to enable their business activities, a tool like PDF Studio can be perfect. Our global customer base tells us all the time how much they appreciate being able to download our software, run it on all platforms, and gain the ability to do what they need to with PDF documents, including merge files of various types, split giant PDFs, and more.

  14. I tried it, but this is not for free, you have to buy a license to eliminate the watermark!

    1. Funny, that some people try to pretend they offer free software, while hiding the limitations in the fine print!  We believe in offering excellent value and clear pricing.

  15. Hate to say it but that is ULTRA slow. For something MergePDF can do in less than 1 minute, PDFMerge couldn’t even complete it after 5 minutes!

    No exaggeration, I promise. And don’t ask me how long it took, because once I found MergePDF I closed PDFMerge.

  16. If all you want to do is combine two or more PDF files into one single file, and you do not have Adobe Acrobat, but do have a Macintosh computer, use Automator. The three items you need are Get Specified Finder Items, Combine PDF Pages, and Move Finder Items. Stack them on top of each other inside automator in that order, save as an application, then to use it drag multiple PDFs from Finder onto it. Free. If you’re using Windows, sorry. I don’t have a free solution. But you can always get a used Mac on ebay or other places.

    1. I’ve never used Auomator, but just tried what you described above. Brilliant! Now I have a free PDF combiner. Thank you!

      1. I’m glad it helped. There are several PDF tools in Automator. The one I use most often of late is setting of PDF Metadata (Title, Author, Subject, etc.) Just stack Get Specified Finder Items on top of Set PDF Metadata. In Acrobat Reader you need to click File – Properties to see this info, so most users will not need it or even know about it. BUT, search engines can see it as can indexing programs that make searching PDFs easier. (e.g. dtSearch) So it is helpful.

        1. You are awesome. I seriously spent hours looking for how I could combine PDF’s that are in different orientation, and this way you described worked perfectly. Thank you so much!

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