PDF Compressor

An easy-to-use PDF file compressor that works on any browser online. No credit card or account creation needed.

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 us isn't rocket science. All you have to do is upload your file; the PDF compressor will get to work reducing the PDF file size right away. Your file will be ready in seconds, even when compressing large PDFs.

High-Level Encryption for Secure Processing

We use TLS encryption for securely processing your files. Only you can access your data and files. One hour after compression, we delete your file.

Basic & Strong Compression

If our PDF Compressor hasn't reduced your file's size enough, there's the option “Strong compression,” available to Smallpdf Pro users. You can try it with our 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.