Question 1

How much will the file size be reduced?

Accepted Answer

Results vary by document. PDFs with many unoptimized streams see the most reduction. Documents that are already compressed may shrink only slightly.

Question 2

Will compression affect the visual quality?

Accepted Answer

Text and vector graphics are not affected. Image quality may be slightly reduced at higher compression levels.

Question 3

Is there a file size limit?

Accepted Answer

No server-side limit - processing runs entirely in your browser. Very large PDFs may take a few seconds depending on your device.

Question 4

Which level should I choose?

Accepted Answer

"Balanced" is the best starting point for most documents. Use "Small file" for sharing via email or messaging apps, and "High quality" when the document will be printed.

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