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Compress your PDF

Drop your PDF here or click to upload
up to 256 MB

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Mediumℹ️ Very High: Maximum compression, lower quality (great for web use). Might look bad, please double check!

High: Balanced compression & quality. Use this if medium does not do anything.

Medium: Less compression, higher quality. Usually the best results.

Low: Almost no compression, best quality (great for printing).


Any questions? See here.

Frequently Asked Questions (FAQ)

What is this?

A tool to compress your PDFs fast and securely – 100% free and easy to use

❓ How does this PDF optimizer work?

Our tool uses open-source libraries, to reduce the size of your PDFs by optimizing images, removing unnecessary metadata, and compressing embedded fonts.

❓ Is this PDF compression tool free?

Yes! Our tool is completely free to use. However, we may introduce premium features in the future for advanced compression and additional functionalities.

❓ What compression levels are available?

You can choose between:
  • Low – Almost no compression, best quality (great for printing).
  • Medium – Less compression, higher quality. Usually the best results.
  • High – Balanced compression & quality. Use this if medium does not do anything.
  • Very High – Maximum compression, lower quality (great for web use). Might look bad, please double check!

❓ Will my PDF lose quality after compression?

It depends on the compression level you select. Lower settings may reduce image resolution slightly, but text remains crystal clear.

❓ What file types are supported?

Currently, we support only .PDF files. Other file formats like Word (.docx), Excel (.xlsx), or images must be converted to PDF before using our tool.

❓ What happens to my files after compression?

For privacy and security, we automatically delete both the original and optimized PDFs from our server after you download them.

❓ Is my data safe? Do you store my files?

No, we do not store or keep any files. Your PDFs are automatically deleted from our server once you download them.

❓ What is the maximum file size I can upload?

Currently, the free version allows PDF uploads up to **10MB**. For larger files, consider breaking them into smaller PDFs.

❓ Can I compress multiple PDFs at once?

At the moment, our tool supports **one file at a time**. We are working on adding batch processing in the future.

❓ Why is my PDF still large after compression?

Some PDFs (e.g., scanned documents) contain unoptimized images that may not compress well. Try selecting a lower quality level or using an OCR tool to convert images to text.

❓ Can I unlock password-protected PDFs?

Yes! If you provide the correct password, our tool can unlock and compress your secured PDF.

❓ Can I use this tool on my phone?

Absolutely! Our website is fully mobile-friendly, allowing you to compress PDFs on the go.

❓ Do you offer an API for developers?

Not yet, but we plan to introduce an API for developers who want to integrate PDF compression into their own applications.

We do not store files. Security is a priority🔒

pdfsqzr.com is a free tool to make your PDFs smaller.

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