Question 1

How does PDF compression work?

Accepted Answer

PDF compression reduces file size by optimizing internal structure, removing redundant data, and applying compression algorithms to text and images while maintaining document quality and readability.

Question 2

Is my PDF file secure during compression?

Accepted Answer

Yes, absolutely! All PDF compression happens entirely in your browser. Your files never leave your computer or get uploaded to any server, ensuring complete privacy and security.

Question 3

What compression ratio can I expect?

Accepted Answer

Compression results vary depending on your PDF content. Text-heavy documents typically compress 10-30%, while PDFs with images may see 5-15% reduction. Already optimized PDFs may not compress significantly.

Question 4

Are there any file size limits?

Accepted Answer

For optimal performance, we recommend PDFs under 50MB. Larger files may take longer to process or may not work in browsers with limited memory.

Question 5

Will compression affect PDF quality?

Accepted Answer

Our compression uses lossless optimization techniques that reduce file size without degrading text quality. Image quality is preserved while reducing unnecessary data.

Question 6

Can I compress password-protected PDFs?

Accepted Answer

No, encrypted or password-protected PDFs cannot be processed. Please remove password protection before compression, or use the unprotected version of your document.

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Frequently Asked Questions

How does PDF compression work?

Is my PDF file secure during compression?

What compression ratio can I expect?

Are there any file size limits?

Will compression affect PDF quality?

Can I compress password-protected PDFs?

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