How it works
This tool rebuilds your PDF's internal structure directly in your browser, stripping unused data and optimizing how the file is stored. Nothing is uploaded to a server — the whole process happens on your own device, so your documents stay private.
What kind of savings can I expect?
Results depend on how the original PDF was created. Files exported from design tools or scanned documents with inefficient encoding often shrink noticeably. PDFs that are already optimized, or whose size mostly comes from large embedded photos, may see smaller reductions. Either way, you'll always see the before-and-after size before downloading.
Why compress a PDF?
- Get under email attachment size limits
- Upload documents faster to forms or portals
- Save storage space on your device or cloud drive
- Share files more easily over slow connections
Frequently asked questions
Is this really free?
Yes, with no limit on how many PDFs you can compress and no account required.
Do you store my PDF?
No. Your file is processed locally in your browser and is never sent to our servers.
Will this affect the text or formatting?
No. This tool optimizes the file's internal structure without altering your document's text, layout or images.
Is there a file size limit?
Since everything runs on your own device, the practical limit depends on your browser and device memory rather than a fixed cap.