How to Merge PDF Files Using Photoshop

Sometimes there are many PDF files you want to merge. It may seem like a complicated mess but you can do this using photoshop. So how do you merge your PDF files when you have the Photoshop program?

Merging your files is much easier than you may initially think. It is straightforward and should only take a few minutes to complete the process. Here is everything you need to know about merging your files using Photoshop.

How to Merge PDF Files Using Photoshop

Some programs may be difficult to merge PDF files but with Adobe’s Photoshop, you can do this quite easily.

All you have to do is follow these several steps:

  1. Open the files you want to merge.
  2. Ensure you “Constrain Proportions.”
  3. Merge the files within the program.
  4. Reduce the file size.
  5. Save when done.

Once you have completed all these steps, you will have your files merged just to your liking. Nothing too complicated.

Open the Files You Want to Merge

You will need to have your photoshop program open. Here you can click on the “Open File” button and choose the files you want to merge. You will have to open each one individually.

You can also drag the files collectively you want to merge. This is quicker than looking up each file. It is easiest if you have all the PDF files saved in the same folder and you don’t have to send as many attachments.

Ensure You “Constrain Proportions”

Your PDF file will open each image at the same size as the first image. This can cause some of your images to come out different, blurry, or just different than the original image. To ensure that this does not happen, check “Constrain Proportions” before you open all the files.

You can also set the width and height of your PDF file so that it is the size you need it to be. This will keep your document from becoming disfigured and ensure there is a fluidity within your documents.

Merge The Files

Once you have opened the files and adjusted them to the width and height you want, follow these next steps:

  1. Go to the File tab.
  2. Scroll down to Automate and click on it.
  3. Another window will open, choose “PDF Presentation.”
  4. Ensure the box that says “Add Open Files” is marked.
  5. Put the list of images in the order you want them saved.
  6. Select “Sort by Name” if you want the list to be automated by the program.
  7. Check the “Compatibility” box for the right version of Adobe you are using.
  8. Click on “Save as Multi-page document” instead of “Presentation.”
  9. When done, save the document.

Once you have saved the document, ensure you name it so that it is easy for you to find. The documents will be all in one place so you don’t have to open each individual file.

Reduce File Size

Sometimes when you merge your files, the final product can be quite large. If your file is too large, you can always reduce the size. This is an optional step you can take but it isn’t always necessary.

When you are saving the file, a “Save Adobe PDF” window will pop up. Here is where you normally change the compatibility of the file or you can change the “Compression” of your file. Change the quality of your image to a lower status to reduce the file size.

Just remember that if you do reduce the quality of the image, this can make some aspects of your file blurry, especially if they weren’t the best quality to begin with.

Check the File

Once you have saved the file, it is always good to go back and check the file. Open up the file and scroll through it to ensure everything was saved properly. You may realize that some parts of the file may have been saved improperly.

You will have to go back and adjust the file settings again to ensure the best solution to your file. This won’t take long but it can be a little taxing. As you continue to use this method, you will become better at figuring out which settings are best for you.


Merging your PDF files don’t have to be difficult. Follow these simple steps to have the best results for a merged file. It will only take a few minutes of your time and you won’t have to open each individual file moving forward. It’s also great for merging scanned documents!