Compress PDF Online

Make your PDF smaller with just a few clicks. It's easy and free*

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Choose Compression Quality

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Choose a file to compress

Select the file you wish to compress from your computer or a cloud storage service like Google Drive, OneDrive or Dropbox.

Automatic Size Reduction

Once the file is uploaded to our system, it will reduce the file size automatically by keeping a relevant compression quality adapted for the internet. You can even shrink your file to email/web quality.

View and Download

When the file is ready, access your compressed PDF file by downloading it to your computer and viewing it in your browser.


Reducing the size of a file is referred to as compression.

Reducing the size of a data file is generally referred to as data compression. While in terms of data transmission, it is called source coding; meaning encoding performed at the source of the data before it is stored or sent. The connection between machine learning and compression is very close; they are both systems that can predict the probabilities of a sequence in a preceding position and consider the entire history to produce optimal data resizing. For prediction, a more advanced compressor can be used.


Reducing bits

File compression involves encoding information using fewer bits than the original representation.

No information loss

Compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in compression.

Compression options

If you are looking for more advanced compressor options, you may use our desktop solution or our online application to make your PDF file small.

*Size and daily usage limitations may apply