PDF Compressor
Reduce the size of large PDFs so they're easier to email and upload.
About PDF Compressor
PDF Compressor lets you reduce PDF file size while keeping quality — free, and without creating an account. Reduce the size of large PDFs so they're easier to email and upload.
Everything happens locally in your browser. Your PDF is processed on your own device using your browser's built-in capabilities, so it is never uploaded to a server and never leaves your computer. That makes PDF Compressor fast — there is no upload or download wait — and private by default.
Because it is web-based, PDF Compressor works on any operating system — Windows, macOS, Linux, Android, and iOS — straight from your browser, with nothing to install.
How it works
Open the tool
Load PDF Compressor in your browser — no signup or download needed.
Add your PDF
Drag and drop your PDF onto the drop zone, or click to choose a file from your device.
Adjust the options
Pick any settings the tool offers. Processing happens instantly in your browser.
Download the result
Save the finished PDF to your device. It was never uploaded anywhere.
Frequently asked questions
Is PDF Compressor free?
Yes. PDF Compressor is completely free to use, with no signup and no limits on how many times you can use it.
Are my files uploaded to a server?
No. PDF Compressor processes your PDF entirely in your browser. Files never leave your device, so your data stays private.
Do I need to install anything?
No installation is required. PDF Compressor runs in any modern web browser on desktop or mobile.
Is this private?
Yes. PDF Compressor runs entirely in your browser using your device's own processing power. Your files are never uploaded to a server, so nothing leaves your computer.