Compress PDF

Reduce PDF file size without losing quality

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Drop your files here or

Accepted: .pdf · Files stay in your browser

Free · No signup · No watermarks · Files never leave your browser

How to use Compress PDF

Upload your file using the drop zone above.
Adjust any options for the compress pdf task.
Click Process and download your result instantly.

Why use PDFzelo Compress PDF?

Reduce PDF file size without losing quality. PDFzelo processes everything locally in your browser — no uploads, no waiting rooms, no accounts. It works on Windows, Mac, Linux, Chromebook, Android and iPhone.

Frequently asked questions

How much smaller?

Typically 40-80% smaller depending on images. Choose from 3 compression levels.

Will quality suffer?

Text stays perfectly sharp. Only images are recompressed, with quality options.

Is it free?

Yes, completely free with no file size limits.