How to compress PDF for free?
Compress PDF from MiOffice lets you compress pdf instantly in your browser. It works on any device — Windows, Mac, Chromebook, iPhone, or Android. No account needed, no watermarks added.
Step-by-Step Guide
- 1Go to the Compress PDF page on MiOffice
- 2Select your pdf from your device
- 3Choose your preferred output settings
- 4Click process — everything runs locally in your browser
- 5Save the result to your device
Ready to get started?
Compress PDF — Free OnlineNo signup required. Browser-first processing; see /privacy for retention details.
Good to Know
MiOffice processes everything client-side using WebAssembly. This means your pdf is processed in your browser, not uploaded to a server. The tool works offline once loaded, supports batch processing, and produces results comparable to desktop software — all for free.
Key Features
- Browser-first processing; see /privacy
- No signup or account required
- Works on any device and browser
- No watermarks on output
- Unlimited usage — completely free
- Supports batch processing