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Compress PDF

Reduce the size of your PDF online

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Your files are secure
Your files are secure
Smallpdf does not sell your file data to third parties. We make money from ads and premium subscriptions, never from your files. We use SSL encryption to prevent data theft.
We are ISO certified
We are ISO certified
We hold the International Standard Organization 27001 certification, assessed by the Swiss Safety Center: we are reliable and handle data responsibly.
Your files are not stored
Your files are not stored
After 1 hour, we delete your file from our servers unless you send someone a shared link or send a file for signature using eSign.
How to compress a PDF
How to compress a PDF
Just drag-and-drop your PDF file in the box above, wait for the compression to complete and download your file. It's that simple.
Security guaranteed
Security guaranteed
Your files will be permanently deleted from our server after one hour. No one has access to your files and privacy is 100% guaranteed.
All platforms supported
All platforms supported
Smallpdf.com is browser-based and works for all platforms. It doesn’t matter if you use Mac, Windows or Linux.
Perfect quality
Perfect quality
Reduce your scanned PDF files to 144 dpi which is perfect for uploading files to the web and through email.
Easy to use
Easy to use
The file size limit is 5GB. Even with large PDFs, it will take a few seconds for our compression tool to work its magic.
In the cloud
In the cloud
All the file compressing takes place in the cloud and will not consume any capacity from your own computer.
How to reduce a PDF size online

How to reduce a PDF size online:

  1. To start, upload your file to our PDF compressor.
  2. Our tool will automatically start to shrink the file.
  3. Continue to modify your PDF document if needed.
  4. Download the compressed PDF file to your computer.
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