How To Reduce PDF File Sizes [Tutorial]

Since PDF files don’t allow further editing of the text or images they contain, they are a great format to share documents and forms online. Sending important documents via e-mail or uploading them to a website for further sharing is the norm by now.

However, if you embed a lot of different images like graphics, charts and photos, clipart and illustrations to a PDF, the file size is significantly high. Especially for PDF documents with many pages.

Luckily, large PDF files can be reduced in file size by a simple compression of the whole file.

[EDIT] We have improved our compression function! This tutorial was, of course, updated to the current and improved state!

Compress PDF Documents

PDF2Go provides an easy way to compress a PDF and thus decrease the file size, making it easier, faster and more convenient to share a PDF online.

This reduction is done by decreasing the quality of the images contained in the PDF. To make a PDF file smaller, you don’t have to play with different settings of the images, but can easily make use of our presets:

  1. Insane
  2. Minimum
  3. Screen
  4. eBook
  5. Printer
  6. Prepress

Depending on the preset you choose, the quality of your PDF and the images contained in it will be changed, thus having a distinct impact on the file size of the PDF.

Find all presets explained here.

How Effective Is The File Size Reduction?

To answer this question we have run a test. The subject is a PDF with 242 pages, containing images. The file size of the PDF is 1.35 MB.

Preset used: eBook
Result: 692 KB

We didn’t even have to use the preset with the lowest quality and already achieved a very high compression and thus file size reduction of the PDF. From 1,350 KB to 692 KB means we actually reduced the file size by 49%.

How To Reduce A PDF’s File Size

With this in mind, let’s have a look at how to compress your PDF file:

  1. Go to
  2. Upload your file. It doesn’t have to be a PDF file. Other documents (Word, TXT, RTF) and images (JPG, TIFF) work as well. However, the output will always be a PDF.
  3. Choose a preset for the compression.
  4. Click on “Save Changes”. When the compression is done, you can download the PDF.

And that’s all you have to do – 4 simple steps!