7 Best Online pdf compressor tools comparison

Are you confused with many online pdf compressor tools? In this article, I am going to compare the top 5 Online pdf compressor tools. Usually, the PDF file size would be very high compared to the Word document size. You will have to reduce the pdf file size when you want to send it by email. When you want to upload it to the internet, it is a must to reduce the pdf file size. So that you can save a lot of time and bandwidth.

You can always compress files by creating zip files. You can use free software like 7-ZIP or paid software like WinRAR to create a zip file.

Hint: Free PDF compression tools will compress your PDF file up to a certain level. If you need the best compression and complete PDF editing features, you need to use premium software. I recommend you to use Adobe Acrobat DC. It is expensive software. If you want a cheaper alternative, you can go with Wondershare PDFelement.

There are many Online pdf compressor tools available in the market. Almost every tool is free because they earn money with ads. Besides, if you want to compare documents first and export these comparison formats, Draftable comes in extremely handy.

Top 7 Online PDF compressor tools

1. Adobe Acrobat

Adobe Acrobat DC is the premium tool that works on PDFs effectively. It also offers a free online tool to convert PDFs to other formats and vice versa. You can also compress the files based on the compression levels. It reduces 925.29kb to 492.14Kb.


  • Convert PDF to excel, word, JPG, PPT, and vice versa.
  • Split, Extract, Sign and protect the files
  • You can easily share the PDF from the software
  • Protects your document from copying


The plans and prices of Adobe Acrobat are provided in the below screenshot.


2. Wondershare PDFelement


Wondershare PDFelement is a premium application that helps you to view, edit, organize, compress, and much more with PDF documents. This has a very clean and user-friendly interface which makes the user feel comfortable while working. This application is available in both free and premium versions.


  • Easy-To-Use
  • Clean and Intuitive user interface
  • All Premium tools at the best price
  • Multi-Platform PDF Editor


Wondershare PDFelement is available in three different plans, Such as Individual, Team, and Education. This is available for both Windows and macOS Operating systems. The prices of all the plans according to their operating system are listed below.

  • Windows
    • Individual
      • PDFelement Professional – $9.99
      • PDFelement Standard – $6.99
    • Team
      • PDFelement Professional – $109
      • PDFelement Business – Contact Sales
    • Education – You need to contact the sales
  • macOS
    • Individual
      • PDFelement Professional – $9.99
      • PDFelement Standard – 6.99
    • Team
      • PDFelement Professional – $109
      • PDFelement Business – Contact Sales
    • Education – You need to contact the sales

3. Smallpdf – Best Online PDF Compressor

small pdf

Smallpdf is a really very good tool. It has a very simple interface. There are no other settings. Just upload a file, compress, and download. It gives good quality pdf even after compressing. It compressed 475kb files to 98kb, which means it reduced file size by 80%.


  • Very simple interface. Drag and drop facility.
  • Very fast
  • High compression level
  • Digital Signature made easy


Smallpdf provides its services in free and paid versions. The paid version is available in three different plans, such as Pro, Team, and Business. Payment can be made on a Monthly and Yearly Basis. The prices of all the plans are listed below.

  • Yearly
    • Free
    • Pro – $9/Month
    • Team – $7/Month
    • Business – Contact Sales
  • Monthly
    • Free
    • Pro – $12/Month
    • Team – $10/Month
    • Business – Contact Sales

4. SodaPDF online compressor

SOda PDf compressor online

SodaPDFOnline is also a simple and good pdf compressor. It will compress 475kb files to 91 kb with good quality. That means its reduced file size by 81% without losing quality.


  • 200MB is the greatest file size. I think no other online service supports this much upload file size
  • Very Fast
  • Simple interface
  • High compression level


SodaPDF provides its services in two different plans, such as Standard and Pro. Payment can be made on monthly and yearly billings. The prices are as listed below.

  • Monthly
    • Standard – $5/Month
    • Pro – $9/Month
  • Yearly
    • Standard – $4.15/Month
    • Pro – $7.50/Month

5. PDFCompressor

pdf compressor

PDFCompressor compressed my 4820kb file to 4069kb. The compression level always depends on the size of the file. It gives a zip file to download. So you need zip programs like 7-ZIP or WinRAR to unzip your pdf file.


  • It supports multiple file uploads. You can upload 20 files at a time.
  • Online Platform
  • Doesn’t change DPI
  • Keeps your documents zoomable and printable

6. Docupub


DOCUPUB has more settings. I have tried with a maximum compression setting. Even with that, it compressed 475Kb files to 459Kb, which means it reduced file size by 3%.


  • Easy interface.
  • More settings.
  • Fast compression. But less speed compares to a small pdf.
  • No download is required

7. PDFaid


Pdfaid gives very high-compression levels. It also has many settings. It reduced 475kb to 73 kb with default settings, which means it reduced file size by 85%.


  • More settings regarding any format to pdf like HTML to pdf, image to pdf, XPS to pdf, SVG to pdf, etc.
  • High compression level.
  • Compress without losing the quality.

Final Word

I like Smallpdf because of its speed and its simple interface. Smallpdf is my first choice for large files. If you need better compression levels and complete PDF editing features, you need to use Premium software like Adobe Acrobat DC or Wondershare PDFelement.

I hope this tutorial helped you to know about the 7 Best Online PDF Compressor Tools Comparision. If you want to say anything, let us know through the comment sections. If you like this article, please share it and follow WhatVwant on Facebook, Twitter, and YouTube for more Technical tips.

7 Best Online PDF Compressor Tools Comparision – FAQs

Is Adobe Online PDF compressor safe?

Most online PDF compressors provided by legitimate websites are safe to use. They won’t store your PDF files or send them to other platforms.

Is there a free PDF compressor?

PDF Compressor is a free and easy-to-use online PDF Compressor. There is no software to download, so you can use the platform directly from your web browser.

How to reduce file size?

Remove unnecessary images, formatting, and macros. Save the file as a recent Word version. Reduce the file size of the images before they are added to the document

Why is my PDF file so large?

First, PDFs can be oversized because one or more fonts have been embedded and subset inside that specific PDF file.

Is SodaPDF the same as Adobe?

SodaPDF makes editing any PDF text a breeze. With our Edit tool, you can modify the content of any PDF for good. Simpler to use than Adobe Acrobat because our software works just like a Microsoft Word Processor, Soda PDF has all the tools you need to modify the content of any document to your requirements.

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