How To Resize A PDF On Mac

Resizing Your PDFs with Ease: A Step-by-Step Guide for Mac Users

As digital files continue to play an integral role in our daily lives, the need to manipulate their sizes has become increasingly important. In this article, we’ll delve into the world of resizing PDFs on a Mac. With the right tools and techniques, you’ll learn how to make those pesky PDF files fit your needs.

What You Need: The Essential Tools

To get started with resizing your PDFs, you’ll require two fundamental components:

  1. Preview App: This is a built-in app that comes pre-installed on Macs. It allows for basic file manipulation and editing.
  2. Adobe Acrobat Reader DC (Optional): While not necessary, Adobe’s software can enhance the resizing process by providing more advanced features.

Section 1: Using Preview to Resize Your PDF

In this section, we’ll explore how to resize a PDF using Apple’s native Preview app. Follow these steps:

  1. Open Preview and navigate to your desired PDF file.
  2. Click on the File menu and select Open With…, then choose Adobe Acrobat Reader DC (if you have it installed) or click “More Apps” to open other compatible apps, such as Preview itself.

If using Adobe Acrobat Reader DC:

  • Under the ‘View’ tab, locate ‘Actual Size’ under the zoom slider.
  • Adjust the slider until your desired PDF size appears on-screen.
  1. In either case (Preview or Adobe Acrobat Reader DC), go back to Preview’s File menu and select Export….

  2. A window will appear asking where you’d like to save the file; choose a location, enter a filename if desired, and set the ‘Save as type’ dropdown to ‘PDF’. Click on the Export button.

  3. Your resized PDF is now saved in your chosen directory!

Section 2: Advanced Resize Options with Adobe Acrobat Reader DC

When you want more control over your resize process or need advanced features, Adobe Acrobat Reader DC steps into play.

  1. Open Adobe Acrobat Reader DC and navigate to the same PDF file mentioned earlier.
  2. Select ‘View’ > ‘Actual Size’.
  3. Use the Zoom Tool () located in the top-right corner of Adobe Acrobat Reader’s window or hold down the Spacebar while using your mouse scroll wheel.
  4. Adjust the zoom level (in this case, it’ll be 50-150%) to fit your desired PDF size on-screen.
  5. When you’ve achieved the right scale, select ‘File’ > ‘Export…’.
  6. Follow steps 3-5 as described in Section 1 for Preview.

Section 3: Best Practices and Troubleshooting

Before we conclude our journey of resizing PDFs, here are some helpful tips and tricks to keep in mind:

  • When working with Adobe Acrobat Reader DC, you can resize your file while still retaining the original document by selecting ‘File’ > ‘Save As…’ under the same folder. This will create a current copy.
  • For more precise control over resizing, consider using image editing software like Adobe Photoshop or Skylum Luminar to trim excess margins from your PDF.


With this comprehensive guide on how to resize a PDF on Mac, you now possess the knowledge and skills necessary to make those pesky files fit seamlessly into any digital landscape. Remember: Preview’s built-in capabiliteis provide an accessible entry point for simple resizing tasks, while Adobe Acrobat Reader DC offers more advanced features when needed.

As always, it’s essential to save multiple copies of your important documents across various devices or platforms for ultimate file safety and accessibility.

Your Turn!

What are some common PDF-related challenges you’ve faced in the past? Do you have any favorite third-party apps that aid in resizing tasks?

Share your experiences with us by commenting below, and let’s keep exploring the world of digital document management together!

(Please note: This article has been carefully crafted to provide a detailed, user-friendly guide. The provided instructions are applicable only to Mac operating systems.)