Compress scanned PDF
Reduce the size of scanned and photo-heavy PDFs by re-compressing every page as an image.
🔒 Everything runs in your browser. Nothing you choose or type is uploaded. How to verify
How to use it
- Choose your PDF.
- Pick the strength and resolution.
- Select Run, compare the sizes, and download compressed.pdf.
Handy for
Emailing scanned contracts and IDs, and uploading documents that have a size limit.
Good to know
Scans store each page as a picture, so lowering image quality and resolution cuts the size. Light keeps text sharp, and Strong suits documents that only need to be readable on screen.
Privacy: where the work happens
Your file is read by your browser and processed by JavaScript on this page. The result is created on your device and offered as a download. Only the page code, and any library this tool needs, is downloaded from cdnjs or jsDelivr.
Questions
Why did it refuse my file?
If re-compressing would make the PDF larger, which is common for text PDFs, the tool stops and tells you to keep your original.
Can I still select the text afterwards?
No. Pages become images, so text cannot be selected or searched.