Compress PDF

Shrink your PDF.
Zero upload.

Reduce PDF file size right inside your browser. Tune quality vs. size with a slider, then download the smaller file — no server ever involved.

Adjustable quality vs. size slider

Preview size reduction before downloading

Works on confidential documents

Works with Wi-Fi disabled

No account required

5 free uses per day

No uploadQuality sliderFree tierWorks offlineConfidential files safe

Proof of Privacy

Don't trust us.
Verify it yourself.

Open DevTools → Network while converting. You'll see zero outbound requests. Every byte stays inside your browser tab.

HIPAA-compatible — no PHI leaves the device

Attorney–client privilege preserved by design

Air-gap friendly — works with Wi-Fi disabled

ZERO OUTBOUND CALLS

ElementsConsoleNetworkSources

FilterAll · XHR · JS · Wasm

NameStatusTypeSize

converter.worker.js200script48 kB

pdf.worker.wasm200wasm312 kB

✓ No requests to external servers

FAQ

Is the compressed file uploaded to any server?

No. Compression runs entirely in your browser. Your PDF never leaves your device.

How much can I reduce the file size?

Results vary by content. Image-heavy PDFs often shrink 40–80%. Text-only PDFs have less room to compress.

Can I control the compression level?

Yes. A quality slider lets you trade off file size against visual quality before you download.

Will the compressed PDF look different?

At moderate settings, the difference is usually unnoticeable. At high compression, embedded images may soften slightly.