Shrinking Files with Style: The Best Open Source PDF Compressors

April 7, 20232.6K views

We’re swiftly moving to an incredibly digitized world where we find ourselves dealing with larger files more on a daily basis. Sometimes it can be challenging to send or store these files, especially when they're PDFs. Luckily, there are several open source PDF compressors that can help you reduce file size without sacrificing quality.

Here, we'll explore some of the best open source PDF compressors available for Windows, Mac, and Linux as well as well as various mobile devices such as iPhone as well as Android.

1. NXPowerLite

NXPowerLite is a paid PDF compressor software that offers a free trial. This software can compress PDF files, as well as other file formats like JPEG, PNG, and Microsoft Office files. It uses advanced compression techniques to reduce file size while maintaining the quality of the file.


  • NxPowerLite can compress files in a variety of forms, including PDF, PowerPoint, Word, JPEG, and PNG.


  • The software may compress files by up to 95% without sacrificing content quality.


  • When compared to other file compression applications on the market, the complete version of the software is very pricey.


"Standalone and Outlook Plugin for file compression"

What do you like best about NXPowerLite?

We are evaluating this software to be used on all of our computers. I get very annoyed when I receive a PDF or Powerpoint attachment that is 10mb, only to find that it is bloated and could have been 500kb instead! NXPowerlite plugs into Outlook and immediately upon pressing send will compress the files attached to the emails. It works GREAT! There is also a standalone application, but it isn't as convenient.


WPS PDF is a free and open-source programme that compresses huge PDF files in three ways: lossless, balanced, and custom. It offers an easy-to-use interface, batch compression, and can be used offline.


  • WPS PDF Compressor supports batch compression, which allows you to compress several PDF files at once, saving you time and effort.

  • WPS PDF Compressor includes numerous compression presets that allow you to determine the level of compression you desire based on your needs.


  • WPS PDF Compressor is an easy-to-use interface that allows you to compress PDF files even if you don't have much technical knowledge.

  • WPS PDF Compressor is a reasonably priced alternative when compared to other PDF compressing tools.


  • WPS PDF Compressor does not have as many functions as some of the other PDF compressing tools on the market.

3. Sejda

Sejda is an online PDF utility with a PDF compressor. It employs powerful compression methods to reduce file size without sacrificing quality. It supports batch processing and lets you preview a compressed file before downloading it.


  • You can change the compression settings, such as image quality and resolution, with Sejda PDF Compressors to get the best results for your needs.


  • Sejda has a free version with limited functionality and a premium version with more advanced features.


  • Sejda PDF Compressors' free version has limitations on the number of files that can be compressed and the size of the files.


"great free pdf program"

What do you like best about Sejda PDF Editor for G Suite?

Sejda is easy to figure out and use. As a free add-on to G Suite it does a lot. Although it is not a program that I use daily, it is definitely used quite often and makes my job easier when handling pdf files. Occasionally I need to merge a few pdf pages together or convert a file to pdf and Sedja easily does that for me.

FAQs on Open Source PDF Compressor

Is there a free PDF compressor?

Yes, there are several free PDF compressor tools available online that can help you reduce the file size of your PDF documents without compromising their quality.

How can I compress a PDF file for free?

To compress a PDF file using WPS Office for free, follow these steps:

  • Launch either WPS Writer or WPS PDF Reader.

  • Choose the PDF file to compress by clicking the "Open" button.

  • While the PDF file is open, go to the top-left corner of the screen and click the "File" tab.

  • Choose "Export to PDF" from the drop-down menu.

  • Click the "Options" button in the "Export to PDF" window that displays.

  • On the "PDF Settings" window, select the "General" tab.

  • Choose the "Custom" option under the "Compression" column.

  • Adjust the quality of the PDF file with the slider. If the quality is lower, the file size will be reduced.

  • After you've tweaked the compression parameters, click the "OK" button.

  • Choose the destination folder for the compressed PDF file in the "Export to PDF" window.

  • To save the compressed PDF file, click the "Export" button.

Why WPS is the Top Open Source PDF Compressor

There are many open source PDF compressor options available, each with its unique features and benefits. Whether you're looking for a free and easy-to-use option or a more advanced compressor, there's something out there for you. And for those who want a software that's both efficient and user-friendly, WPS PDF is definitely worth checking out.

Download WPS PDF now to experience its robust compression features, as well as its other powerful tools for editing, annotation, and conversion to other file formats.

15 years of office industry experience, tech lover and copywriter. Follow me for product reviews, comparisons, and recommendations for new apps and software.