How To Reduce PDF File Size

How to reduce PDF size

How To Reduce pdf File Size: Good Day! If working with PDF files is a feature of your daily ordeals, you’ll be quite aware that PDF files can be pretty large. Large

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PDF files aren’t great for electronic transfer. Just like many other digital files, it is very possible for you to compress a PDF file to the barest minimum file size.

Working with Adobe PDF, the sizes of PDF files may vary, this depends on the preset settings. If a PDF file is created using “High-Quality Print Preset” the result will be a pretty large PDF file.

If the PDF file was created with “Standard” or “Smallest” file size preset, the PDF file will come out reduced. No matter the preset used in creating the PDF File, it is very possible for you to reduce the PDF file effectively.

How To Reduce PDF File Size

The process of reducing digital file size is referred to as “Data Compression”. In data transmission terms, it is referred to as “Source Coding” which means;

Encoding carried out at the data source before sent or stored. Let me cut the technical gibberish and head to business.

On this HowTo9ja “How To” I’ll be showing you how to reduce pdf file size across multiple devices and in many ways so that if method one doesn’t work for you, method two should.

  1. How To Decrease PDF Files With Your Mac and/or Windows
  2. How To Reduce PDF Files With Your iPhone and/or Android.
  3. How To Lessen PDF Documents With Online Tools

The goal here is to learn how to reduce pdf file size without losing quality.

How To Reduce PDF File Size With Your PC

With your Mac PC and Windows PC, it is very possible for you to compress or reduce your PDF file. You can use the online method which is extensively explained down there or you can use any apps listed below.

Mac users are blessed with a system app called “Preview” which aids in compressing PDF File. Windows 10 users aren’t left out either.

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The steps you’ll use in reducing your PDF File Size, using Adobe Acrobat is the same with your Windows PC and Mac Os.

How To Reduce pdf File Size Mac

I’ll show you two major ways to decrease PDF File Size on mac, with the Preview

Decrease PDF File With Mac Using Preview Tool

Step 1: Navigate to the folder containing your PDF File.

Step 2: Open the PDF file with your Preview app. By default the Preview tool is Mac’s default app for opening PDF files,

so if double click on the PDF it should open. If that doesn’t work, Right Click and select “Open With” then select Preview.

If the above doesn’t work. Launch your Preview app, click on “File” in the top menu bar then select “Open“, a window now pops up prompting you to select the PDF file you wish to edit, then click on “Open“.

Step 3: After the PDF opens in Preview, click on “File” in your top menu.

Step 4: Select “Export As….” at the middle of the drop-down menu, a dialog box pops up.


how to reduce pdf file size mac

Step 5: Click on the “Format” drop-down menu in the Export pop up box.

Step 6: Select the PDF.

Step 7: Now go to the “Quartz Filter” drop-down menu, which is below the “Format” option.

how to reduce pdf file size mac

Step 8: Choose “Reduce File Size“.

Step 9: In the “Export As” box, rename the PDF to a name you want, don’t erase the “.pdf” extension.

Step 10: In the “Where” drop-down menu, choose a folder you’ll love to save the file.

Step 11: Click on “Save“. The PDF file has now been reduced and stored in your destination.

Reduce PDF file size using third-party apps

They are a handful of applications you could use in reducing PDF files on your MAC Os, an honorable mention is Adobe Acrobat, instructions to carry out this task with Adobe is in the “Windows PC” section below and the steps are similar to Adobe for Mac PC.

Another application that could carry out this task is PDF Squeezer. This app can be gotten from your iTunes app store and should cost you $6, Adobe Acrobat isn’t free either.

How To Reduce PDF Document Size On Windows

They are many ways to reduce PDF File sizes with your Windows PC, I’ll show you a handful of them.

Decrease PDF Files Using Adobe Acrobat

I believe you have the Adobe Acrobat app on your PC if you can’t get one now, check for other methods in the window section or jump down to the “Online” method.

The Adobe Acrobat Pro app steps below apply to Adobe For Mac OS.

Step 1: Launch your Acrobat Pro App.

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Step 2: Navigate too and open your PDF file. Click on the “File” option in your top menu bar -> Select “Open“, locate the PDF document you wish to reduce and click on “Open“.

Step 3: When the PDF document opens, click on “File” at the top menu bar.

Step 4: Select “Save As Other….

Step 5: Choose “Reduced Size PDF” a dialogue box pops open

Step 6: Click on the “Make Compatible With” drop-down menu.

Step 7: Now, choose the most recent Acrobat version. The newer the version you choose, the more efficient the reduction will be.

Step 8: Choose a location to save the PDF file

Step 9: Click on “Save“. The PDF file has been reduced and saved successfully.

How To Decrease PDF File Size On Windows(& Mac) with MS Word

The setup of Ms.Word on Mac and Windows are the same, so just like the above steps, these steps could be applied with Ms.Word for Mac Os.

Today, almost all Windows users have Ms. Word application on their PC, but a few are aware that you can reduce your PDF document with Ms. Word. The downside is that, if the document you wish to work on is already a PDF file

You’ll need to convert it to a word document, this is very possible with online tools if you are in a hurry. You might see a means to open your PDF file

in a word document when you right-click, I don’t advise you do this cause you’ll need to edit a lot of things when Word opens your PDF file.

I presume you have converted the PDF document to Word document, we will be using the “Save As Minimum Size” to convert our Word document BACK to a reduced size PDF. Steps below. Use a very recent Ms Word App

Step 1: Open your document(Former PDF now Word) in the Ms Word app. You can do this by, launching the Ms. Word app -> then click on “File” at the top menu -> Select “Open” then navigate to the folder you saved the new document and select it.

Step 2: The document now opens in the Ms. Word App, click on “File” at the top menu.

Step 3: Select “Save As

Step 4: A dialogue box pops up, look down you’ll see “Save As” drop-down menu, click it and choose “PDF“.

Step 5: Right below the above box, you’ll see “Optimize For” choose “Minimum Size (Publishing Online)“.

Step 6: To the right of the above box, you’ll see an “Option” box, click this. A dialogue box pops up.

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Step 7: Check to make sure that “ISO 19005-1 compliant (PDF/A)” and “Bitmap text when fonts may not be embedded” is not checked. If they are checked, uncheck the boxes.

Reduce PDF File Size With Other Apps( Technical Way)

I wouldn’t dive deep into this topic because it is quite technical but easy. All you need here is the basic then do the remaining work.

I will suggest two third party apps, for you. These applications need a script called GhostScript.

Step 1: Download GhostScript here.

Step 2: Install any of these applications.

1. IrfanView

This is a lightweight image viewer app for your windows. It gives you a lot of plugins. It also has a PDF printing quality.

2. FreePDF

This also works, but you must install GhostScript.

How To Decrease PDF Files With Mobile Devices

Reduce PDF Files With Android Phones

The whole thing here is to use a third-party application, below are some FREE third party applications I recommend

1. PDF Compressor
2. Compress PDF
3. Adobe Acrobat(premium)

Go to your Google app store, download any of these applications, install it, upload the pdf document by navigating to where the PDF file is. Allow it to compress.


Go to the “Online Method” below, which works for both Mobile and PC users.

Reduce PDF Files iPhone

Just like the android device, you need a third-party application to go about this ordeal. Download any of the applications below.

1. iLovePDF
2. Compress PDF

Download any of the above applications from your Apple Play store.

Launch it, upload the file or first select the “Compress” option(iLovePDF) then allow it to do its work.

How To Reduce PDF File Size With Online Tools

This is the grandmaster, this method could be used on all your devices like your Mac, Windows, Android, Linux, e.t.c all you need here is a good data connection and your browser.

Step 1: Open any of this URLs in a new tab
1. SodaPDF
2. SmallPDF

Step 2: Drag and drop or upload the PDF file.

Step 3: Follow the onscreen options to modify your PDF file if shown any or allow the tool to reduce the PDF file.

Step 4: Download into your device and you are done.

I hope I was able to help out? Drop your comments below or any suggestion

You’ve learned how to reduce pdf file size, learn how to convert PDF to JPG and the reverse.

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