Compress PDF
Optimize PDF structure without lowering image quality.
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Compress PDF — workspace
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How to use: Compress PDF
Choose local files or try the sample PDF. Your documents stay on your device.
Choose one PDF and create an optimized copy. Compare the original and resulting sizes after processing.
Create the result, check its preview, then download individual files or the ZIP archive.
What you can do
- Optimize PDF structure without lowering image quality.
What you get
- A new PDF download; your original file remains unchanged.
What you need
- Local files
- One PDF document.
- Settings
- Choose one PDF and create an optimized copy. Compare the original and resulting sizes after processing.
Try an example
- Example workflow
Optimize the sample PDF and inspect its size comparison; already optimized files may not get smaller.
Good to know
- Up to 50 MB per file, 100 MB per job and 200 total pages. Multi-file tools accept at most 30 files.
- This is structural compression without lowering image quality. It does not promise a target size or large savings for scanned documents.
- Keep the original document. Editing an existing digitally signed PDF can invalidate its certificate signature.
Your work stays on your device
Your files and entered values are processed in your browser and are not uploaded for processing. The website and any required processing engines still download from the site.
Questions & answers
Is Compress PDF free?
Yes. Compress PDF is free to use and does not require an account.
Are my files or entered values uploaded?
Your files and entered values are processed in your browser and are not uploaded for processing. The website and any required processing engines still download from the site.
What result can I save?
A new PDF download; your original file remains unchanged.
What should I check before using the result?
Up to 50 MB per file, 100 MB per job and 200 total pages. Multi-file tools accept at most 30 files. This is structural compression without lowering image quality. It does not promise a target size or large savings for scanned documents. Keep the original document. Editing an existing digitally signed PDF can invalidate its certificate signature.