Free online tool

Compress PDF online

Optimizes images, fonts and internal PDF data to reduce file size while preserving readable content. Process PDF online and download the result without changing the original.

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Drop your files here or click to select them from your device Select files Accepted formats: PDF Up to 1 file, 20 MB per file

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How to configure the result

Each option controls a specific part of processing. Keep defaults when you do not need to control that aspect.

Controls the balance between fidelity and size. Higher values usually produce larger files.
Private, temporary processingFiles are deleted automatically after 60 minutes.

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PDF

What Compress PDF does

Optimizes images, fonts and internal PDF data to reduce file size while preserving readable content. The tool validates the selected files and applies only the requested operation and settings. Optimization reduces size or normalizes content while keeping the file useful.

Compatibility and limits

Input formats
PDF
Results
PDF
Number of files
Minimum 1, maximum 1
Maximum total size
24 MB
FAQ

Frequently asked questions

It can when lossy compression is used. Defaults aim to balance size and fidelity.

Input supports PDF and can produce PDF. The selector rejects incompatible extensions before processing.

No. A new result is created and the uploaded file remains unchanged during temporary processing.
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