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1) Upload PDF
Drag and drop your PDF or select it from your device. Processing happens locally in your browser.
Your file is never sent to a server.
Compress PDF Online — Private & Free
Upload PDF files
Local in-browser processing
Quality72
How to Compress a PDF
Upload your file, choose settings, and get a smaller size without losing important quality.
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2) Adjust and compress
Select a strategy (QPDF or Raster), enable linearization if needed, and click “Compress”.
Higher compression may slightly reduce image quality. - 3
3) Download result
Get your optimized PDF and check how much space you saved.
Your original file remains untouched.
Privacy and control
Everything runs in your browser. You control the quality and the outcome.
Frequently asked questions
Reduce PDF file size with structural or raster compression. Results depend on the source document; processing stays in your browser.
We do not receive or store your PDFs. Only anonymous Google analytics may load on the page.
Limits depend on your RAM and browser. Modern desktops handle tens to hundreds of MB; close unused tabs or use a desktop for very large scans. The queue lets you compress multiple files one by one.
Yes - no account and no paywall. Funded by ads and optional donations. All processing stays on your device.