Merge PDF Documents Online for Free

Our online tool allows you to merge multiple PDFs into a single document for free. No downloads required.
Drag & Drop PDF Files Here
Choose Files

How it works

How to Merge PDFs

There is no need to go through a maze of clicks to combine PDF documents. Just drag and drop your PDFs into the box above. You can add more docs if needed.

Manage Documents

Once your upload is complete, you can rearrange or delete your documents before you proceed.

Absolutely Free

Price is another advantage that makes Altomerge the right choice. There is no need to buy expensive software in order to combine your files. Altomerge is completely free.

Encrypted files transfer

We’ve set up an encrypted connection for securely uploading and transferring files. For additional protection, all files are deleted from our server after they're processed.

Compatibility with major platforms

Altomerge runs in a browser and works with all major operating systems like MacOS, Windows and Linux. You can merge PDF documents at any time from any internet-connected device.

Merging files in the cloud

Our app doesn’t consume storage space on your computer or device. All the tools exist in cloud storage and you can use them any time you need to combine PDFs.

How Do Users Rate AltoMerge?

Our service faciliates the work of over two million people merging PDF documents online every year.


People all over the world prefer PDF as their documentation format of choice. Only PDFs can deliver compact and easily downloadable docs for any device that can be password protected and run on any operating system. That's why we've created Altomerge – an online service that allows users to combine PDF documents for free.

How It Works

  • First, simply drag and drop your PDFs into the box or press the orange Choose Files button. Both methods allow you to upload and organize the documents you’ll be merging.
  • Second, preview and arrange your PDF documents in the order of your choosing. Whether you have to merge docs at the last minute or you need to rearrange and further combine them, Altomerge allows you to do it easily online.

Altomerge has become the go-to PDF merging solution for over two million people combining PDFs online every year. In fact, users merge over 20,000 PDF forms online with our solution every day. Speed, convenience, quality, and consistency of combined documents are why more and more people put their trust in this streamlined free online service. Take advantage of our solution, it’s easier than ever.