Compress PDF
Updated Files never leave your device
Reduce PDF size by re-rendering pages as optimized images — very effective for scans and photo PDFs. Text becomes part of the image, so keep the original if you need to search or select text.
Choose a PDF
or drop files here · 🔒 processed on your device, never uploaded
How to compress pdf
- Choose a PDF.
- Pick Smallest file, Balanced or Best quality.
- Process and compare the new size.
Private by design
PDF Fox runs entirely in your browser using open-source PDF libraries. Your documents are never uploaded, stored or seen by anyone — close the tab and they're gone.
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Frequently asked questions
Are my files uploaded?
No. PDF Fox processes files with JavaScript inside your browser. Nothing is sent to a server, so your documents stay private.
Why did my PDF get bigger?
Text-only PDFs are already tiny; re-rendering them as images can increase size. Compression works best on scanned or image-heavy PDFs.
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