Online PDF Compression Tool

compress-pdf.co.uk provides a free online PDF compression service. For peace of mind, any files uploaded will be automatically deleted within an hour, check out our privacy policy for more information.

Do keep in mind that uploading and compressing PDFs can take some time, after hitting "upload & shrink" hang around until the page re-loads.

Compress PDF Privacy Policy

The functionality of this site is used at your own risk. It is still in a experimental and testing phase, so things could break. If they do, please report the problem so we can work on fixing it in the future. All files uploaded are removed after a maximum of 2 hour of being uploaded. All compressed files are also removed after a maximum of 2 hours. That is unless something breaks! Your files are your own and we will not access them at any time unless you've told us we can, or you've reported a problem with a particular file – in which case we might need it for testing.

Compress PDF Cookie Policy

This site doesn't use cookies directly, but the adverts may. If you don't want cookies stored on your computer we recommend adjusting your browser settings accordingly. If you're not sure how to do that, use your favourite search engine to find out.

How PDF Compression Works

When you upload a file to us, we run through all of the content and try to recude the sizes of images, optimise the PDF for screens and reduce the colour pallet slightly.

People who use our service see up to 40% reduction in file size!

Files will be removed after 1 hour.
Version: 1.1
Maximum File Size is 500M

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