Shrink PDF

Shrink the size of any PDF online for free in seconds. Quick, easy to use PDF compressor that doesn’t compromise the quality of your PDF file.

Free compression without registration
Works in your browser—no software needed
Shrink your PDF in a matter of seconds

Shrink PDFs on-the-Go

Smallpdf is a cloud-based service. You can shrink a PDF from anywhere with an internet connection—whether you’re using a computer, a tablet, or your mobile phone.

Smaller Files, Greater Possibilities

The smaller a file, the easier it is to work with them. After you shrink the size of a PDF, you can use our other online tools to share, edit, convert, or sign your file.

Shrink Your PDF on Any System

Need to shrink a PDF's file size on a Mac? No problem at all! Our online services mean our PDF tools can work their magic on all operating systems, including Mac, Windows, and Linux.

Shrink Other File Types

Shrink PDF has a lot more to offer than meets the eye. You can compress PDFs, but our compression tool also works with other file formats, including Excel, Word, and JPG images.

Safety & Privacy Ensured

When you shrink a PDF document file size with our tool, your data and compressed PDF files are secured through high-level TLS encryption. We’re also GDPR compliant and ISO/IEC 27001 certified.

Shrink Multiple PDFs at Once

With a Smallpdf Pro subscription, you can shrink multiple large PDF files at the same time. Batch PDF compression saves you time and energy. Give it a try with a 7-day free trial.

How To Shrink the Size of a PDF:

Drop your large PDF into the toolbox above.
Hit the compress button.
We'll shrink your file in a matter of seconds.
Select “Strong compression” for more power.
Download your shrunken PDF file—done!