How to Reduce PDF File Size on Your Devices

How to Reduce PDF File Size on Your Devices

Last updated on January 30, 2018 by

PDF files are considered as the most secured and commonly used format to send documents or compiled pictures. However, some systems or emails may have requirements to the size of uploading files, so people want to reduce the size of PDF. What’s more, it is a great idea that we keep our files reduced to free up some memory on our storage yet maintaining the authenticity of the document without compromising the confidentiality. Here are four PDF editors which can help you reduce PDF file size no matter what device you are using.

Free Ways to Reduce the Size of a PDF File


SmallPDF is an application that you can use to reduce, convert, split, merge and edit PDF files online as well as with desktop program. This app is easy to use and at the same time you can make sure that your files will remain confidential since they are deleted after an hour to protect their customer’s information. Here is how to use its website to reduce a PDF file size online.

Step 1: Go to Smallpdf’s page for compressing PDF.

Step 2: Click to choose a PDF file or drag and drop the file to the “Red Box” where it says “Drop PDF here”.

SmallPDF Online

Step 3: Wait until your file is compressed. Once done, click “Download File Now” on the bottom left side of the box. Also you can save the file to your Dropbox or Google Drive.


  1. For the desktop application, just download the app then choose “Compress” then you are good to go.
  2. To fully enjoy the function of this app, you must register and get a premium subscription.

Mac Built-in Solution

For Mac users, Apple has a simpler solution for you to reduce PDF file size for free – take the advantage of the Mac built-in feature. Follow the steps below to learn how.

Step 1: Open the PDF file, choose “File” then look for “Export”.

Click Export

Step 2: Click “Quartz-Filter”, then choose “Reduce File Size” from the drop down menu.

Step 3: Lastly, click “Save” to save the PDF file.

Reduce File Size


When the file is compressed, the PDF may have lower quality than the original.

PDF Tool Ultimate

PDF Tool Ultimate is an application that you can download on your Android device. You can compress, merge, flatten, rotate, and lock your PDF file, etc. Just like Smallpdf, files will be deleted after an hour on their server. All process is done on their system. Now let’s use this app to reduce the size of a PDF file.

Step 1: Download the app from Google Play Store and launch it.

Step 2: Choose “COMPRESS”, tap “+” button at the bottom right.

PDF Tool Ultimate

Step 3: Select a PDF file and wait for it to load. Once completed, it will be automatically saved to your Android phone.


To check where your file is stored, you can tap the information icon beside the file to learn more.


iLovePDF is a free tool that can merge, split, compress, convert and edit PDF files. This app can work on devices running iOS 9.0 or later. Below is how you can reduce a PDF file size using this tool.

Step 1: Get the app on your iDevice, open the app and tap “COMPRESS PDF”.

Step 2: Select a PDF file from your mobile device, Google Drive or Dropbox.

Step 3: Hit “Next” to start compressing. It will be saved on your drive after compressing.

iLovePDF Compress


All mentioned above apps will help you easily reduce the size of a PDF file. By doing this, you can lessen the memory consumption and make it easier for you to send it via email since it is compressed.

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Posted by: on January 29, 2018 to Tips and Resources, Follow me on Twitter. Last updated on January 30, 2018

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