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Compress a PDF Online

Shrink your PDF's file size — pick Smart or Maximum compression.

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Click to upload or drag and drop a PDF here

How to compress a PDF

  1. Upload your PDF.
  2. Choose Smart or Maximum compression.
  3. Download the smaller file — the result message shows exactly how much space you saved.

Frequently asked questions

Will compression hurt quality?

Smart compression aims for barely-noticeable quality loss. Maximum compression prioritizes the smallest possible file, which can visibly soften images.

Why does compression strength vary?

The best available method is used automatically — the result tells you whether strong (Ghostscript/CloudConvert) or basic compression ran.