Compress PDF
Shrink large, scanned, or image-heavy PDFs by re-encoding each page as a compressed image.
🔒 100% on-device — your files never leave your browser.
This rebuilds the PDF from compressed page images — best for scanned or image-heavy files. Selectable text and crisp vector graphics are flattened in the process.
Use Compress PDF as an app
Install it and Compress PDF gets its own icon, opens in its own window without browser chrome, and keeps working with no connection — because it never needed a server in the first place.
Installing copies the tool itself to your device. It adds no accounts, no tracking, and no way for your files to leave your machine.
Frequently Asked Questions
Is compressing my PDF private?
Yes. Compression runs entirely in your browser — your file is never uploaded to a server.
How does the compression work?
Each page is re-encoded as a compressed image, which dramatically shrinks scanned or image-heavy PDFs. You control the quality and detail level.
Will I lose quality?
Compression is lossy and flattens selectable text, so it’s best for scans and image-based PDFs. Use a higher quality setting to keep more detail.