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Compress PDF

Shrink large PDFs with image down-sampling and metadata stripping.

In-browserNo upload
Local-only session
Files processed inthis browser tab
Bytes sent to server0 / 0
Tab close discardseverything
Enginepdf-lib · client-side
Verify in dev-tools · Network tab
What the tool does

Built for documents you can't afford to lose.

Runs in your browser
No server round-trip. Your file is processed by WebAssembly right in this tab.
Preserves quality
No re-encoding by default. Structure, links, and metadata survive intact.
Nothing to leak
Files never leave your device. Close the tab and everything is gone.
Compress PDF · FAQ

About this tool, specifically.