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Compress a PDF Online
Shrink your PDF's file size — pick Smart or Maximum compression.
Click to upload or drag and drop a PDF here
How to compress a PDF
- Upload your PDF.
- Choose Smart or Maximum compression.
- 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.