How to reduce PDF size on iPhone?

Today, we have more and more large files on our cell phones. It must be said that in everyday life, these are no longer just gadgets, but aids that are invaluable to say the least. Except that for many features, it requires downloading an application and it can still take up a lot of space.

Therefore, you surely want to save a little space in another way.

For this, what we advise you to do, it's simply to reduce the size of your files, especially PDF and for this, there are several possible techniques.

In this article, we will introduce you to four of them.

Subscribe to the Adobe Creative Cloud Plan

Often to open a PDF file, we will use software called Adobe Acrobat. This software is free and so you don't need to pay a penny to use it, at least when it comes to opening files.

As you can imagine, this paid software will also offer you several other possibilities which this time will be subject to payment on your part and in particular via what is called the Adobe Creative Cloud Plan. As for our Adobe Acrobat application, the so-called pro version will then cost you 20€ per month, but it has a 30-day free trial that could be very useful if you just want to free up space in one fell swoop.

Because yes, via this paid version of the application, you will notably have the possibility of reducing the size of your PDF files by compressing them.

To do this, here is the method you will have to follow:

  • Subscribe to Adobe Acrobat Pro or take advantage of the trial offer.
  • Download mobile app and log in.
  • Import a document if necessary via the “+" at the bottom right.
  • Open the document and click on the 3 small dots at the top right.
  • Then select “compress PDF".

This Pro version of the application, it is certainly useful and it also allows you to modify your PDFs or add a signature, but outside the free trial period, we do not necessarily recommend it. Unless you have a lot of use, for work for example.

Use a third-party app

Because yes, there are applications on your iPhone store that are able to simply do the same thing as the pro version of Adobe Acrobat, except that this time, it will be done for free!

So to be complete you will not have an application offering you as many possibilities as the Pro version or else you will have to download several different applications.

However, if your goal is simply to compress pdf file on iphone, well, you'll easily find what you're looking for on your phone's official app store.

There are quite a few applications that allow you to do this, but to make things easier for us, here we will present one in particular, Small PDF. It is for us the most efficient, complete and intuitive application of the lot.

We therefore suggest that you find below the procedure to follow to allow you to shrink pdf file on iphone in just a few minutes:

  • Download Small PDF.
  • Login or create an account.
  • Click on the “+” to import your PDF files.
  • Click on the three dots at the top right.
  • Select "Compress".

As you can see, this manipulation for compress your PDF file on iPhone, it is very simple. The only downside is that it is not possible to reduce the size of your files by only 40%.

To switch to 75%, you will need a paid version of this application.

Compress a file directly on your iPhone

So far, you have been given solutions for compress files on iPhone via apps whether they come directly from Adobe or from third-party applications. But there is also a solution directly on your iPhone via a ZIP archive.

Indeed, basic, there is the possibility to make a compression directly from your files. We will therefore give you the procedure to follow in this part. Be aware, however, that before you can compress a file, it will need to be on your phone.

You should also know that if what interests us here are the PDF files, it is also possible to compress several types of files directly from your iPhone.

Here is how to do it:

  • Open the app Files.

  • Then choose the location On my iPhone.

  • Press the 3 small dots at the top then press To select.

  • Then choose one or more files that you want to compress.
  • Tap the More button in the lower right corner, then tap Compress.

Next, you will of course be able to unzip this file if you ever want to be able to see what's inside of it. To do this, open the file in the usual way.

Compress a file on your computer

Finally, the last technique for compress a file on iphone, is to do it before on a computer.

Indeed, as we have just seen, iPhones are able to read ZIP files. From then on, you will be able to compress the file you want on your computer via applications like Winrar or 7-zip.

Then simply transfer the files directly to your iPhone afterwards.


That's it, you now know different techniques allowing you to compress files on your phone. Each of its methods has its advantages and disadvantages, whether in terms of price for example.

If you can do it directly via your phone, applications allow you to do it a little more intuitively, and above all allow you to do it in addition to other nice possibilities. like being able to modify these files.

But sometimes, downloading a new application, when you just want to make room, is counterproductive. So, we leave you in control of your destiny and that is why we have offered you these 4 different techniques in this article in the hope that they meet your needs.