Compress PDF
Reduce PDF file size by recompressing images and optimizing structure, with a before-and-after size report.
Runs in your browserFree · no sign-up
How to use Compress PDF
- 1
Choose or drop your file
- 2
Adjust the options
- 3
Process and download the result
Good to know
- Results depend on the document. Text-only or already-optimized PDFs may not get smaller; in that case the original is kept.
- Image recompression applies to JPEG images. The 'Maximum' level rasterizes pages, which removes selectable text.
Frequently asked questions
How much smaller will my PDF get?
It depends on the content. Image-heavy PDFs usually shrink the most; text-only PDFs may barely change. We show the exact reduction and keep your original if compression does not help.
Is Compress PDF private?
Yes. This tool runs entirely in your web browser. Your files are processed on your device and are never uploaded to our servers.
Is there a file size limit?
Without an account you can process files up to 50 MB. Paid plans raise the limits.
Do I need to install anything?
No. It works in any modern browser on Windows, macOS, Linux, Android and iOS.