10 easy steps to compress pdf files on Mac

By | November 16, 2018

Uploading pdf files can become a problem if the file size is large. Mac users try to use Preview app to reduce the file size. Using Preview, you can compress the file but you will have to compromise with the quality.

The result pdf file may be distorted and blurry. Of course, you will not want to send a file that is barely readable. In this blog, I show 10 easy steps to compress pdf files on Mac without loosing the quality.

Note: The approach shown in this blog can also be used to compress image files.

Important: Please do not perform compression on the original files. Try to create a copy of the file first. On this copy perform compression. Your original data has to be safe.

When will you require to compress/reduce file size ?

There can be many cases when you will need to compress the file. Two most common are:

  • Sending pdf files via e-mail (like gmail allows 25MB max file size)
  • Uploading passport scan pdfs for visa

Solution

Mac users can solve this problem easily by following the steps below:

1 – Go to Mac Applications -> Utilities

Mac applications
Mac Applications


2 – Open ColorSync Utility

ColorSync Utility
ColorSync Utility


3 – Select Filters

Filters ColorSync Utility app
Filters ColorSync Utility app


4 – Click “+” sign to add new filter

Add filter ColorSync Utility
Add filter ColorSync Utility


5 – Rename the filter and click on list down arrow button on right

Creating filter
Creating filter


6 – Select Add Image Effects Component -> Image Compression

Image Compression
Image Compression


7 – Select JPEG in Mode and Drag Quality button to little left

JPEG Compression
JPEG Compression


8 – Open pdf file with ColorSync Utility app

Create a copy of your original file first. Then perform compression on that file.

Right click on the copy of pdf file - data-recalc-dims= Open With -> ColorSync Utility” class=”wp-image-1366″/>
Right click on the copy of pdf file -> Open With -> ColorSync Utility


9 – Choose the filter you created

If your pdf has more than one number of pages then you will have to compress each of them by selecting individually.

Apply filter
Apply filter


10 – Press apply button

Compressed pdf file
Compressed pdf file
pdf file after compression
pdf file after compression

You can observe in above image that we have successfully reduced/compressed our pdf file from 777KB to 322KB without loosing the quality.

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