PDF (Portable Document Format) compression means a reduction in the size of a PDF image. It is the most common and safest option to share a file without worrying about the adjustment in the document. In order to make PDF documents compatible with processes such as printing, web uploads, and attaching to emails, it should be compressed in actual quality. Sometimes it becomes hard to share large size files via email or online platforms, so what to do?

Compress PDF online is possible for everyone to reduce the large file as per their convenience. We can use PDF compressor software or can compress PDF files online but, which PDF compressor online? There are many online PDF compressors tool can be found on websites however, it’s hard to choose, Which one?

Compressing PDF Files

Since we are talking about Compress PDF online, there are a lot of online websites that compress PDF file size online for free. Some PDF compressor tools can be download as software or app, while some can be used online. The important factor of this tool is to compress the large size of PDF files without hampering the quality of the document so that users can check by the printing or uploading the clear document. We have mentioned few online PDF compressors websites and they are absolutely free to compress PDF online and they will not require any app purchase or subscriptions as well.

1.   Hipdf


Hipdf is a free PDF compressor web-based tool that will help to Compress PDF File Online. This software is a very clean and user-friendly interface with a variety of features, all clubbed in.

This tool can quickly compress PDF files without compromising image quality in documents as it doesn’t change the DPI (Dots per Inch) in image files.

How to Use it?

  • Users have to simply visit the website hiPDF.com and they have the option to Signup/Login to the tool.
  • Click on “Compress PDF
  • On the next page, upload the PDF file by either clicking on “Choose File” or simply drag the PDF file into the window.
  • Once the file is chosen, users will see three compression quality: High, Medium and Low.
  • Choose the desired compression quality and press “Compress”.
  • Once users have chosen the file, the server will process and upload the document. This might take some time, depending on the size of the document.
  • System will start processing the request and compress the best quality file.
  • Once the PDF file is compressed, Download compresses PDF files in your system. If a user is not satisfied with the compressed quality, they can “Start Over” the process.

You can even use the multipurpose in-built tool which allows you to edit, merge and convert the files. Users have the option to Signup/login to this tool if they want to access and explore more tools from this compress PDF online website.

2.   ilovePDF


ilovePDF is another key planner counted in PDF Compressor Software family. This tool is very easy to use which allows users to compress, split, merge images along with other conversions options, add/remove watermark and lots more.

How to Use it?

  • Click on “Compress PDF
  • Choose the file to compress.
  • In the new page, you will get an option of compression level.
  • Once you have chosen the level, click on Compress PDF. Tap on Download.

3.   SmallPDF

Another tool to compress PDF online. If you are a frequent user of PDF formats, then this is the best PDF compressor for you as it offers Chrome extension as well. This smart software is being used by millions of users as a smart Best PDF Compressor Online tool.

How to Use it?

  • Choose PDF file to compress.
  • Here you will get an option to compress PDF file in two versions: Basic and Pro.
  • Click on Basic Compression, you will get an estimated compression with the file.

Here you go and download the new Compress PDF file.

4.   Docupub


It’s a popular online PDF compressor that allows users to convert and inter-convert among various documents like Excel, Word, PowerPoint, image formats and many other PDFs files. This tool is linked up from an online server and works online.

How to Use it?

  • You can adjust the compression settings according to your preferences. The settings include Presets, compassion compatibility, and image settings.
  • Choose the PDF file to compress.
  • A new pop will appear on your screen.
  • Click on the Compressed Pdf File And hit like on the downloading icon.

Everything goes perfect with this software except the uploading size must be under 20 MB.

As we have stated above, you will find more online PDF compressor tools website, however, we have listed the best online PDF compressor which helps users to compress PDF files online quickly and without downloading other software. We hope that you will surely like the above mentioned best PDF compression software to reduce PDF file size and if we missed out to any online PDF compressor tool or if you have any recommendations, feel free to mention in the comments section.


Lucy Taylor is an avid reader and writer who is into this profession for over a decade now. This writer has written a lot of article on How to compress PDF file. She loves to explore topics related to tech & cybersecurity. When not typing away to glory on her desk, she loves to play guitar.

Write A Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.