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Compress PDF Online

Reduce the file size of your PDFs. The tool removes redundant data and, at stronger levels, re-renders pages at a lower resolution — great for email attachments and upload limits. All processing stays on your device.

🔒 100% private — files never leave your browser

Drag & drop a PDF file here

or click to browse

Compression level

How to use the Compress PDF

  1. 1 Drop a PDF file into the box, or click to browse.
  2. 2 Pick a compression level: Light keeps quality high, Strong maximizes size savings.
  3. 3 Click "Compress PDF" and download the smaller file.

Frequently asked questions

How much smaller will my PDF get?

It depends on the file. PDFs with large scanned images often shrink by 60–90%; text-only documents may shrink only slightly, since they are already efficient.

Will compression hurt the quality?

Light compression is usually visually lossless. Strong compression re-renders pages at ~110 DPI — fine for reading and email, but not for high-quality printing.

Does my PDF get uploaded anywhere?

No. Compression runs entirely in your browser using WebAssembly-grade libraries locally. Your files never leave your device — all processing happens locally in your browser.

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