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Top 4 Ways to Reduce PDF Size on Mac Without Losing Quality

Jane Zhou updated on Apr 17, 2024 | Home > PDF Editor Tutorials | min read

The majority of PDF files contain many graphics and photos, making the file size reasonably heavy. This tends to be a problem, especially when you want to send this file via email! Heavy PDFs frequently cause issues since they can surpass the size limit imposed by online email services. In this instance, it is necessary to reduce PDF size on Mac without losing quality. But how?

If you have no idea, don't fret. You can get help on this page. Here, we will introduce some best free PDF compressor software, and also show you how to make PDF size smaller on Mac in detail. Now, let's dig into it!

How to Reduce PDF Size on Mac Without Losing Quality in Preview (Free)

For Mac users, there is a default program that can assist you in minimizing PDF files on Mac, and that is Preview.

With this program, you can reduce PDF size in four simple steps. In addition, this freeware allows you to browse, markup, edit, and merge PDF files with ease, or display various file formats like TIFF, PNG, JPEG, GIF, BMP, and PDF.

How to downsize PDF files on Mac with good quality:

Step 1. Open the PDF file. If you have Preview as your default PDF Viewer, it will open automatically. However, if you have another default PDF viewer, right-click on the PDF file, select "Open With, " and click on "Preview."

Step 2. After the file is opened, go to the top toolbar and click on "File" then "Export."

Step 3. A new pop-up window will appear on the PDF. Click on the drop-down menu next to "Quartz Filter". Select "Reduce File Size." Once done, click "Save" to export the decreased PDF. 

Reduce PDF size on Mac with Preview

How to Make PDF Smaller on Mac with Good Quality using Adobe Acrobat

Adobe is the original inventor of the PDF format, and ever since, it has also produced a popular and comprehensive tool that allows you to manage such documents effectively. When it comes to reducing the PDF size on a Mac, you can count on this software. Moreover, it allows you to read, modify, browse, and enter information into PDF files.

Here's how to shrink PDF file size on Mac without quality loss:

Step 1. Launch Adobe Acrobat on your Mac. Then click "Tool" > "Optimize PDF" to import your target PDF file.

Optimize PDF

Step 2. In the top menu, click on "Reduce File Size," then select the proper compatibility settings and click on "OK."

Reduce PDF size on Mac using Adobe

Step 3. Once done, select a folder to save the compressed PDF file on your Mac.

How to Compress PDF File on Mac with Foxit Reader

Another tool we'd like to talk about is Foxit Reader, which is a good alternative to Preview on Mac. By installing this program, you can do all sorts of editing features to your PDF files, including compressing PDF files. If you don't know how to deal with it, you can check the following steps:

Here's how to make PDF smaller on Mac using Foxit Reader:

Step 1. Open Foxit Reader on your Mac.

Step 2. Click on "Files", then you will see a drop-down menu. Click on the option "Reduce File Size."

Reduce PDF size mac Foxit

Step 3. Then, you will be required to find the PDF that you want to compress. Once you open the file, click on "Audit Storage Space". This will show you the size of the PDF. Then, you have to choose how much do you want to reduce the file's size. 

Step 4. After you select the desired file size, click on "OK" to finish the process.

How to Decrease PDF Size on Mac Online for Free

If you are a one-time user, you may prefer the online tools to downsize your PDF files. Given that, we will show you an excellent online PDF compressor to help you shrink PDF size on Mac without downloading any other third-party programs. And that's Smallpdf.

Here's how to use Smallpdf to downsize PDF on Mac online:

Step 1. Go to its official website, and click "CHOOSE FILES" to upload your PDF file.

Reduce PDF file size on Mac online

Step 2. Once imported, click "Compress" to start the process.

Step 3. At last, you can hit "Download' to get the compressed PDF on your Mac.

Bonus: How to Compress PDF into Small Size on Windows

If you sometimes need to reduce PDF size on Windows, you can rely on EaseUS PDF Editor - one of the best PDF compressor software. This program lets you compress your PDF with a few steps. 

Before compressing, you also can modify your files based on your needs, like adding text, inserting shapes, or adding and removing watermarks to your PDF files. Last but not least, you can password protect PDF files to protect them from unauthorized viewing and copying. Now click the below button to try this software.

Step 1. Launch EaseUS PDF Editor and click on the "Compress" button to import your PDF document.

Choose Compress on Interface

Step 2. In "Compression mode", choose "Prefer quality" or "Prefer compression". The first one will give priority to the document quality; while the second will try to compress the file as much as possible. Then, choose a folder for the compressed PDF and click "Compress" to start.

Choose Compression Mode

Step 3. After compression, you will be lead to the exported PDF file on your computer.

The Bottom Line

After reading this post, you will find that it is extremely easy to reduce PDF files' size on a Mac computer. Now choose any solution we mentioned above to compress your PDF document!

Reduce PDF Size on Mac FAQs

1. How do you reduce the size of a PDF on a Mac without losing quality?

Preview can help you reduce PDF size on Mac without losing quality:

  • Open PDF with Preview.
  • Click File > Export
  • Choose Quartz Filter > Reduce File Size > Save.

2. How do I reduce the MB size of a PDF?

To reduce the MB size of a PDF, all you need is a PDF compressor. Here are some popular ones:

  • EaseUS PDF Editor
  • Adobe Acrobat
  • PDF Filler
  • Smallpdf

3. How do I reduce a PDF size by 50 %?

With some online tools' help, you can easily reduce a PDF size by 50%. Just enter the online PDF compressor on Google, and then choose one to start your task.

About the Author

author Jane Zhou

Jane Zhou

Jane is an experienced editor for EaseUS focused on tech blog writing. Familiar with all kinds of video/PDF editing and screen recording software on the market, she specializes in composing posts about recording and editing videos. All the topics she chooses are aimed at providing more instructive information to users.

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