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How to Merge PDF Files with Adobe Reader

by Hung Nguyen

You can also read this article in German, Spanish, French, Indonesian, Italian and Portuguese.

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

Do you have many PDF files that you need to put together into one collective document? Check out how to combine files using Adobe Reader or Smallpdf. We make PDF easy!

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 docs into a single PDF file within the few clicks. However, this is a paid feature, which not everybody has access to. Of course, if you can allocate $24.99/month, go for it. Otherwise, go to the next step to check out how you can merge PDF files for free with Smallpdf.

How to merge PDF files without Adobe Reader, for free

Smallpdf boasts the most popular online PDF merger, for you to carry this task out easily. It's free to use, twice an hour, for your PDF needs.

merge pdfs

Merging PDF documents made easy

  1. Go to the Smallpdf Merge Tool.

  2. Upload a single document or multiple PDF files into the toolbox (you can drag and drop) > rearrange files or pages positions > Hit 'Merge PDF!'.

  3. Voila. Download your merged files.

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 that over 18 million people use Smallpdf on a monthly basis to convert their documents. Merging PDF documents is one of our most popular tools.

We adopt secure SSL 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! Twice an hour. The platform was created to solve common document related problems (for our moms). If you have many documents that need to be processed, you can 'go Pro', for the price of a latte each month ($3/month).

How to merge PDF files with Adobe Reader offline, for free


Unfortunately, Adobe requires a paid subscription for you to merge, annotate, convert and edit your documents. However, we too have an offline app that will allow doing just this. While it's not as free as the online version, we do offer five days of free usage for you to test our product out. Download Smallpdf Desktop today!

merge desktop

Merge PDF files offline

  1. To do so, open Smallpdf Desktop.

  2. Click 'Merge' on the left-hand side > arrange file positions as you please > Merge files.

And that's all there is. Regardless of whichever 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 in the new year!

Hung Nguyen
Hung Nguyen
Senior Growth Marketing Manager @Smallpdf