PDF Compressor
Free online PDF compressor. Reduce PDF file size by re-encoding embedded images — choose quality level, keep text sharp. Browser-based.
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支持 PDF 格式
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FAQ
How does PDF compression work?
Embedded images are re-encoded at your chosen quality level; text and vector content stay untouched and sharp.
Why is my PDF barely smaller after compressing?
If a PDF is mostly text or already-optimized images, there is little to compress. Scanned documents shrink the most.
Is my PDF uploaded?
No — compression runs entirely in your browser.