How to use Compress PDF
- Choose your files, or drag & drop them anywhere on the page.
- Reorder or adjust the settings, then hit the big button.
- When it's ready, click "Save." Your files never leave your device.
FAQ
Why can I no longer select the text?
To make the file small, each page is redrawn as an image. Keep the original if you need to copy text.
What if the file gets bigger?
If the result is not smaller, you get the original back unchanged.
Is it safe to use Compress PDF with my files?
Yes. Your files are never uploaded — they're processed only inside your browser. Every page is served with a policy that blocks outgoing connections (Content-Security-Policy connect-src 'none'), and the counter in the bottom-left shows the data sent: 0 bytes.
Is it free? Do I need an account?
It's completely free, no account needed, and there are no usage limits.
Does it work on my phone?
Yes. It works in mobile browsers on iPhone and Android. For very large files, a computer will be faster.