Compress PDF
Reduce file size — either losslessly, or by re-rendering pages at a lower image quality.
or drop files here
Files stay on your device — nothing is uploaded.
Your files never leave your browserEverything happens on your device: no upload, no server-side processing, no storage. You can verify it in your browser's network tab.
How it works
- Add a PDF file.
- Choose Lossless or Strong compression.
- Compress and download the smaller file.
Frequently asked questions
- What is the difference between the modes?
- Lossless rewrites the file and keeps text selectable, typically saving 5–20 %. Strong re-renders every page as an image: much smaller for scans, but the text is no longer searchable.
- Why did my file barely shrink?
- Lossless savings depend on how the file was made; already optimised PDFs shrink little. Try Strong if you don't need searchable text.