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How to Compress Image in PDF

Sometimes the images that are on the PDF document you are working on can be very large. This can make it difficult to effectively share the PDF document via certain channels. One of the ways to mitigate this problem is to compress images in PDF.

The process of compressing PDF images can be very simple if you choose the right PDF editor and follow the right processes. In this guide, we look at this process in greater detail and the best ways to do it.

What is Image Compression?

Image compression is a process that is employed to compress pixel data and in so doing effectively reduce the size of the image. For example, if you were to store a 1020x768 image without compressing it, it would take up about 2.3 MB of data. Chances are, you don't have just one image, increasing the chances of having a very large document that will be almost impossible to share.

The method of compression that you choose, or even if you compress the image or not, will depend on the type of image that you have. For instance, JPEGs do not retain 100% of the information and work great for photos, but PNGs are lossless formats that work great for screenshots. JPEGs, therefore, tend to compress better than PNGs which carry a lot of information.

There are various ways to compress images and the one you choose will depend on the kind of image you have on your PDF document.  If the images are in PNG or GIF format, then you want to choose a compression method that will not affect the quality of the image. Choosing a lossless compression method is useful for documents with GIFs as they restore the data after the file is uncompressed. During compression, the long strings of code are changed into shorter codes but the file remains largely unchanged.

reduce pdf image size

Why You Need to Compress Image in PDF 

Compressing images in PDF is not just a useful solution when sending large PDF files via email, but can also be beneficial in several other ways, including;

1. Compatibility

Perhaps the biggest reason to compress images in a PDF is to make it easy to share the file. This is especially true if you choose to use email as your medium to share the files since email is often limited in terms of disk space. The PDF with compressed images will not just be compatible with email, allowing you to attach it easily, but it will also be easier to print and upload to websites.

2. Save Storage Space

Reducing the size of the image will save you storage space as the size of the PDF document will also be significantly reduced. This becomes more important when you have a lot of PDF documents with large images. More room on your computer will allow you more room for more data.

3. Faster Document Processing Speeds

A smaller PDF means faster document processing speeds.  You will send the PDF files much faster and download any documents sent to you more easily. Compression makes this possible because it reduces the amount of time it takes to download and send a file.

4. Reduced Cost

Spending less time on document processing can have a hugely positive effect on the overall cost to the company. Smaller files mean you spend less time on the company network and ensure the optimization of the disk space, allowing the company to store more documents at a fraction of the cost.

5. Easier Batch Processing

Compression makes it very easy to process multiple documents at the same time. Using compression tools like WinRAR can allow you to combine numerous documents at the same time and send them in one tiny convenient bundle, rather than send one huge file at a time.

6. Easier Backups

Creating a backup of the data on any of the devices you own is a common practice that can be instrumental in protecting the data from loss. And file compression is at the center of any backup process. File compression makes it easy for you to transfer the backup to another device and store numerous backups without worrying too much about storage space.

How to Reduce Image Size in PDF with Adobe Acrobat

One of the ways that you can easily compress a PDF document is to use Adobe's online tool. This highly effective solution allows you to compress the PDF in a few simple steps. Here are the steps that you can use:

reduce image size pdf

Step 1: Go to Adobe compress tool on any browser to access the tool you need to compress the PDF.

Step 2: On the main screen, click on "Select a File" to upload the PDF that you want to compress. Browse your computer for the file you need and double-click on it to open it in Adobe.

Step 3: Once the file has been uploaded, you should see it listed under "Compress PDF." Choose a compression level from the drop-down menu, depending on how small you want the document to be and the quality. Then click "Compress."

Adobe will compress the document to match your requirements and, in a few seconds, you can click on "Download" to save the compressed document to your computer.

The Best Free PDF Tool for You

If you work with PDF documents regularly, then you know that some of the best PDF tools in the market can be quite expensive. But now there is a revolutionary PDF tool that gives you all the features you would expect on some of these expensive alternatives but at no cost to you. This UPDF - free PDF editor can help you manage your PDF documents in various ways, including:

compress image in pdf
  • It offers the best PDF reading experience, allowing you to read and annotate any PDF document with ease.
  • It is also one of the best ways to edit a PDF document. You can very easily edit the text including the font and size. It also comes with an image editor, allowing you to replace, resize, reposition, crop, or delete any images within the document.
  • UPDF can also be a great way to manage the pages on a PDF document, allowing you to rotate, reorder, replace, extract, delete and even add new pages to any section of the document.

The developers of this very useful PDF tool are constantly improving its function to make it easier to use but also to introduce new features. Upcoming features include OCR, PDF forms, and document protection.