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Clear Ways to Resize PDF on Mac

If the current size of the PDF document you have doesn’t correspond to the specifications of the project, you may find that you need to resize the document. Resizing a PDF on Mac can be easily done if you have the right tool for the job. Here, we will look at some of the options you have and how you can use them to ensure your document is just the right size.

Part 1: How to Resize PDF Page Size on Mac

If your main goal is to reduce the size of the pages on the PDF, the PDF resizer you need is UPDF for Mac. This is a PDF management tool that allows you to compress PDF file size and alter any aspect of the PDF including the pages in a few simple steps. This is thanks to the numerous page management features that UPDF has in addition to a variety of other PDF management features including;

  • UPDF is one of the simplest ways to manage the pages on a PDF document. You can use it to resize PDF pages, split them, add new pages, rotate them, reorder them and even delete pages from the document.
  • You can optimize PDF with different document qualities.
  • It also has PDF editing features that will allow you to edit both the text and images on the document.
  • It is also one of the best PDF converters, allowing you to convert the PDF document to the most popular formats including Word, Excel, CSV, PowerPoint, RTF, Text, Image (PNG, JPEG, BMP, TIFF, GIF), HTML, XML, and PDF/A.

Are you interested in the above functions? If you are interested, you can click the download button below to download it.

Method 1. Resize PDF by Compressing PDF File Size

Step 1. Open PDF with UPDF

First, you need to open your PDF file with UPDF for Mac.

Step 2. Access to Save as Other

Now, you can tap on the "Save as Other" icon on the right toolbar and then select the "Reduce File Size" option.

resize PDF mac

Step 3. Resize PDF File Size

Then you can select any of the options about document quality. When you tap on it, the compressed file size will appear, and you can choose the one you needed. Once done, click the "Save As" button.

resize pdf on mac updf

Method 2. Resize PDF by Cropping PDF Page Size

Here’s how you can use UPDF to resize the page size of a PDF document.

Step 1: Open the PDF and click the “Crop” icon

Open UPDF on your Mac and open the PDF whose pages you want to resize. You can simply drag and drop the file into the main interface to open it.

Click on the “Crop Pages” icon on the left to access the features that you need.

enter into crop pages mode

Step 2: Adjust the Page Size

Click on the “Option” icon to set the page margins that you want the cropped pages to have.

crop the pdf size

Step 3: Apply Changes to All Pages

To crop all the pages on the document, enable the “Apply Changes” option and choose “All Pages in Range.”

Above are the steps to resize the PDF page size. It only takes three steps. It is so simple and so can you. Let's download UPDF and do this!

apply to change all pages

Part 2: How to Resize PDF Images on Mac

UPDF has a built-in image editor that allows you to resize the images on the PDF document. This is a good solution if you find that some of the images on the document are too large and are affecting the document’s text-to-image balance.

Here’s how to use this image editor in UPDF to resize the images on a PDF;

Step 1: Go to the Edit Mode

Start by opening the PDF with the images that you would like to edit.

You will then need to enter edit mode to resize the images. To do that, simply click on the “Edit Text & Images” icon.

enter into edit mode

Step 2: Select the Image and Choose the “Crop” option

Now click on the image that you want to resize to select it.

Once selected, you should see various image editing tools appear. Since we want to change the size of the image, click on “crop” to select the cropping tool.

select the image and enter the crop mode

Step 3: Resize the image in PDF

With the crop tool selected, use the mouse to drag the image to achieve the required size.

reszie the image

Part 3: How to Resize PDF in Preview

If your goal is to reduce the size of the file, you can use Mac Preview. Preview can be able to help you reduce the size of the document is by compressing a file. This can be very useful when you have a very large file and you want to reduce the file size to make it easier to share.

Here’s how you can use Preview to compress a PDF file;

Step 1: Open the PDF document you want to resize in Preview

Step 2: Click on “File > Export” but don’t choose “Export as PDF.”

Step 3: Click on the “Quartz Filter” popup menu and select “Reduce File Size.” Preview will immediately compress the PDF file.

Part 4: FAQs on How to Resize PDF on Mac

Can I Resize a PDF on Mac?

Yes, it is quite possible to change the size of a PDF document. But you will need to use a specialized PDF editor if you want to change the size of the pages or the images on the document. Preview will only allow you to compress the file, reducing its overall size.

How Do I Resize a PDF on Mac without Losing Quality?

If you use Preview to compress the PDF, you will be able to retain the original quality of the document. UPDF can resize the pages and images on the document without affecting the overall quality of the document.

How Can I Change PDF Size?

If you want to change the actual dimensions of the pages, then UPDF is a safe and very effective option. If your goal is to reduce the size of the file, compressing the document in Preview should do the trick.


Sometimes it is necessary to reduce the size of a PDF document to make it easier to share or to make sure it complies with the project guidelines. UPDF is a solution that can help you achieve both goals.