Reduce PDF Size

Reduce the size of your PDF files online in a few simple clicks—100% free. Get your files email-size ready in seconds with no signup or account creation needed.

Works on any device online
Simple and fast PDF size reduction
Reduce PDF size to a fraction

Reduce PDF Size for Free

We believe working with PDFs should be easy and free. You can use any of our PDF tools at no cost, whether that’s to reduce the file size of large PDFs, convert, edit, or more. No need to sign up or create an account to use our online services.

PDF Sizes Perfect for Emailing

All email providers have some form of size restriction for attachments. This tool is your answer. Just drag & drop your file and our PDF compressor will reduce the PDF file size to a fraction of the original without an impact on quality.

Reduce the Size of a PDF the Easy Way

You don't need complicated settings or software; reducing the size of large PDF files happens in the cloud, with just one drag & drop on your part. Just access Smallpdf's online tools using your favorite browser.

Your Privacy First—Always

One hour after processing, we delete your documents for your privacy. This gives you ample time to download or continue working on your file with our other tools. TLS encryption ensures the safety of your data at all times.

Share, Edit, Sign, & More

After you've reduced the size of your PDF, you're free to check out our other tools. They allow you to merge, split, edit, convert, sign, or delete pages in PDFs. You can also share your file directly from the tool's results page.

The Perfect File Size Every Time

If at first you don't succeed… Try our strong compression option to reduce the size of your PDF even more. It can compress PDF files by up to 99%! This is a Pro feature, but you can try it out with a 7-day free trial.

How To Reduce PDF Size Online:

Import your file—it can be a PDF, Office document, or image.
Wait a little, while we reduce the size of your PDF.
Continue with “Strong compression”—if needed.
Done! You can download your smaller file or keep working.