Compress PDF

Reduce PDF file size up to 95%, and the quality of the same.

Choose Files+

or drop files here


Fast and easy

Just drop your files on the page, choose an output format and click "Convert" button. Wait a little for the process to complete. We aim to do all our conversions in under 1-2 minutes.

In the cloud

All conversions take place in the cloud and will not consume any capacity from your computer.

Security guaranteed

We delete uploaded files instantly and converted ones after 24 hours. No one has access to your files and privacy is 100% guaranteed.

All devices supported

OnlineConvertBox is browser-based and works for all platforms. There is no need to download and install any software.