Rewrite and slim your PDF for easier sharing. Free, and it runs in your browser. Results vary by how the PDF was built (image-heavy scans shrink less than simple text PDFs).
Use Compress PDF (interactive) — JavaScript required for uploads.
We rewrite the PDF to drop unused objects and use object streams. This is not a full image-downsampling RIP — we do not claim “90% smaller every time.”
Yes, completely free and with no account.
Often for simple PDFs. Already-optimized or heavy image PDFs may shrink little.
This path prioritizes rewrite/slim rather than aggressive image re-encoding.
This tool works entirely on this page. Your file is opened by JavaScript here, changed in memory, and handed straight back to you — it is never uploaded. Open your browser's Network tab while you use it and you will see nothing leave your device.
Because there is no server doing the work, there is no signup, no watermark, no file size limit, and no daily cap. Nothing is stored, because nothing is received.
Browse all free PDF tools, or read how we handle privacy and security.