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How to Merge PDF Files with Adobe Reader

by Hung Nguyen

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Find out how to combine multiple PDF files into one within a few clicks, online or offline, with Adobe and its best alternatives.

Combining multiple PDF documents into one is simple—if you know the right tools. In this guide, we’ll show you how to combine files using Adobe Reader or Smallpdf.

How to merge PDF files with Adobe Reader

Follow the instructions below to combine PDFs with Adobe Acrobat DC quickly.

adobe merge tool

Where to locate Adobe’s Merge Documents tool

  1. First, have Adobe Reader open.

  2. Click Tools > Combine Files > Add Files > Combine Files again to commence the merging process.

Adobe DC can quickly combine your documents into a single PDF file within a few clicks. However, this is a paid feature, so not everybody has access to it. Of course, if you can spare $24.99/month, go for it. Otherwise, read on to find out how to merge PDF files for free with Smallpdf.

How To Merge PDF Files Without Adobe Reader, for Free

  1. Upload the files you want to merge.

  2. Rearrange the files or individual pages.

  3. Done! Download your merged files.

How To Merge PDF Files With Adobe Reader

Merging PDF documents made easy

What Else Is There?


Our web pages also offer quite a few other tools for you to work with for free. On top of merging files into a single PDF document, why not:

  • Convert – to Word, Excel, PPT, or JPG.
  • Split – the opposite of merging.
  • Rotate – turn single or all pages.
  • Reader – for your viewing needs.

Is Your Online Service Secure?


You know it! So much so that millions of people use Smallpdf every month to convert their documents. Merging PDF documents is one of our most popular tools. We adopt secure TLS connections for file transfers and delete them after 60 minutes of processing—just enough time for you to edit and download your documents.

Is Smallpdf Really Free?


Oh yes, a few times a day. The platform was created to solve common document-related problems. If you have many documents that need to be processed, you can “go Pro” for the price of a latte each month ($3/month).

If you reach the daily usage limit on our site but still have files to merge, try out Pro for free. We offer a 7-day free trial of Smallpdf Pro, which removes any limitations and gives you full access to all our tools, including the Smallpdf Desktop App (read on for more info).

How To Merge PDF Files With Adobe Reader Offline, for Free


While Adobe offers a great offline PDF reader, it requires a paid subscription for you to merge, annotate, convert, and edit your documents. However, we, too, have an app to help you get your document work offline. While it’s not free like the online version, it’s included in the aforementioned 7-day free trial. Here’s how to merge PDF files offline with the Smallpdf Desktop App:

  1. Open the Smallpdf Desktop App.
  2. Click “Merge” on the left-hand side.
  3. Arrange file positions as you please.
  4. Click on “Merge files,” and you’re done.
2023-07-24 – How To Merge PDF Files With Adobe Reader - Offline

Merge PDF files offline

And that’s all there is to it. Regardless of the solution you opt for, we hope to make your work with PDF documents as painless as possible. Here’s to many more features to come!

Hung Nguyen
Hung Nguyen
Senior Growth Marketing Manager @Smallpdf