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Compress PDF Files Online

Shrink PDF file size while keeping readability — processed locally in your browser. Free forever, no upload, no account.

🚀 Open Compress PDF Files Online

100% free · no upload · no account · works offline

Smart compression re-encodes images inside your PDF. Works best on scanned/image PDFs. Your file is processed on your device — nothing is uploaded.

🔒 Privacy first: this tool runs entirely in your browser (open-source PDF.js engine). Your file is read locally, processed in memory, and never transmitted. Disconnect Wi-Fi and try it — it still works.