How to Batch Compress Multiple PDFs at Once
Shrink many PDFs in one go and download a ZIP.
Got a folder of heavy PDFs? Batch compression processes them together and hands you a ZIP of smaller files.
ChangeMyPDF runs entirely in your browser — your files never leave your device, there's nothing to install, and you can start without an account. Here's exactly how to do it.
Step-by-step
- Open the Bulk Compress PDFs tool.
- Drop all the PDFs you want to shrink.
- Let them process in parallel.
- Download the ZIP with size stats.
Tips for the best result
- Great for archiving scanned folders.
- Check the per-file savings in the stats.
Is it safe and free?
Yes. Most ChangeMyPDF tools process files locally in your browser, so documents are never uploaded to a server. Free accounts can run a few operations per hour; a Week Pass or Premium plan removes the limit and ads if you need to do more.
Frequently asked questions
Do my files get uploaded to a server?
For most tools, no — the work happens in your browser, so your documents stay on your device.
Is it really free?
Yes. Free users get a few runs per hour. For unlimited use and no ads, grab a $5 Week Pass or a Premium plan.
Which browsers are supported?
Any modern browser — Chrome, Edge, Firefox, and Safari on desktop and mobile.