Compress PDF
Drop a PDF, pick a quality level, and shrink it locally. Files never leave your device.
How it works
- Drop a PDF into the upload area. The file stays on your device.
- Pick a compression level: Recommended for general use, Extreme for the smallest file, Less compression to keep maximum quality.
- Click Compress. Every image inside the PDF is recompressed locally — the original file is never modified.
- Compare 'Before' and 'After' sizes on screen.
- Download the smaller PDF.
Frequently asked questions
How much can I expect to save?
For image-heavy PDFs (scans, photo-laden reports), 50–90% reduction at Extreme quality is typical. Text-only PDFs are already small and gain little.
Does compression damage the text?
No. We only recompress image XObjects inside the PDF — text strings, vector graphics, fonts, and form fields are copied verbatim.
What's the difference between the three levels?
Extreme: 50% JPEG quality, 96 PPI target. Recommended: 70% / 150 PPI. Less compression: 85% / 220 PPI. Higher numbers = larger files but sharper images.
Why is my compressed file barely smaller?
Either the PDF has very few images (text dominates), the images are already JPEG-compressed at high quality, or the source images are already small. Compression can't go below what the images themselves allow.
Is anything uploaded?
Nothing. Compression runs entirely in your browser — we never see your file.