PDF Compressor

Compress PDF files easily online, using any browser. No account or credit card required.

Free, fast, and secure PDF compression
Safe TLS encryption for all file transfers
Online PDF Compressor without sign-up

Easy-To-Use PDF File Compressor

Compressing PDF files with our tool is quick and easy. Simply upload your file and our PDF compressor will immediately begin reducing its size. Your compressed file will be ready in seconds, even if it's a large PDF.

High-Level Encryption for Secure Processing

Your files are processed securely using TLS encryption. Your data and files can only be accessed by you. Your file is deleted one hour after compression.

Basic & Strong Compression

Smallpdf Pro users can utilize the "Strong compression" option if the PDF Compressor does not sufficiently reduce the file size. This feature can be tested with a 7-day free trial.

PDF Compressor for Mac, Windows, and Linux

We're not partial when it comes to operating systems. Smallpdf works on all devices; all you need is an internet connection to use our online tools. We’ve even got mobile and desktop apps.

Get To Work Right Away

As a cloud service, our Compress PDF tool doesn't require you to install anything or figure out how to use it. Just a drag & drop your PDF documents, and you’re set—we'll do the grunt work!

A PDF Compressor That Maintains Quality

We reduce the file size of your PDF, but we don't touch your content. Your images, text, and anything else in the document will stay as crisp as they were—no quality loss! You can still send high-quality files without worrying about file size limits on different email clients.

How To Use Our Online PDF Compressor:

Upload your PDF, Word, or image file to the tool.
Wait while our file compressor does its work.
Download your compressed PDF if you’re happy with the size!
Go with “Strong compression” if you need a smaller file.