Which mode should I use?

Try Optimize first for text documents. Use Strong for scanned documents, photos or presentations with large images.

Why did the file not get smaller?

Some PDFs are already well optimized. If the result would be larger, we tell you and you can keep the original.

Are my files uploaded to your servers?

No. The conversion runs entirely inside your browser using your own device. Your files never leave your computer, so the tool is private and works even for confidential documents.

Free Compress PDF

Reduce PDF file size for email and uploads.

Settings

Optimize keeps text selectable and quality unchanged. Savings depend on how the PDF was created.

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What does the Compress PDF do?

Make PDFs smaller. “Optimize” rewrites the file structure and keeps text selectable. “Strong” re-renders every page as a compressed image, which dramatically shrinks scanned and image-heavy PDFs (text is then no longer selectable). You always see the before/after size.

How to use it

1Choose a PDF.
2Pick Optimize (keeps text) or Strong (maximum reduction) and a quality level.
3Compare the sizes and download.

Frequently asked questions

Which mode should I use?: Try Optimize first for text documents. Use Strong for scanned documents, photos or presentations with large images.
Why did the file not get smaller?: Some PDFs are already well optimized. If the result would be larger, we tell you and you can keep the original.
Are my files uploaded to your servers?: No. The conversion runs entirely inside your browser using your own device. Your files never leave your computer, so the tool is private and works even for confidential documents.

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