Compress a PDF online, free
Compress a PDF two ways: 'Smaller file' re-encodes pages as images (real reduction for scans and image-heavy PDFs, but text becomes non-selectable), or 'Keep text' does a lossless re-save. There is no guaranteed reduction — already-optimized PDFs may not shrink.
Files are processed locally in your browser and are not uploaded to a server. No account, no watermark, no tracking.
How to use it
- Open the Compress tool and choose a PDF (up to 250 MB).
- Pick 'Smaller file' (with a quality level) or 'Keep text (lossless)'.
- Click Compress, then download the result.
Good to know
- No guaranteed reduction — already-optimized PDFs may not shrink.
- 'Smaller file' re-encodes pages as images, so text is no longer selectable.
- 'Keep text' preserves text but may barely shrink image-heavy PDFs.
Privacy & honesty
Your documents stay on your device — LocalSign has no servers that receive your files. Signatures, stamps, highlights, shapes, and other annotations are visual changes created by you. LocalSign does not verify, certify, notarize, or legally validate documents.