Compress PDF file
Reduce file size while optimizing for maximal PDF quality.
or drop PDFs here
Your files are processed in your browser and never uploaded to any server.
How to use Compress PDF
- 1Select the PDF files you want to make smaller.
- 2Choose a compression level.
- 3Click “Compress PDF” and download the optimized file.
About Compress PDF
Our compressor re-encodes oversized images, removes redundant data and restructures the file. Text stays sharp and selectable with the recommended level; extreme compression turns pages into optimized images for the smallest size.
- No upload – 100% private processing on your device
- Free with no watermark and no sign-up
- Works on Windows, Mac, Linux, Android and iOS
Frequently asked questions
How much smaller will my PDF get?
It depends on the content. PDFs with many photos or scans usually shrink by 50–90%. Text-only PDFs are already small and may shrink less.
Is Compress PDF free to use?
Yes, completely free. No registration, no watermarks and no daily limits.
Are my files safe?
Your files never leave your device. All processing happens locally in your web browser, so nothing is uploaded to any server.
Does it work on mobile phones?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux – no app installation needed.