Compress PDF to 400KB
400KB handles the long submission: fifteen-ish scanned pages, or reports where images matter, at quality that holds through review. We compress toward your target at the best quality that fits, never make the file larger than the original, and always show the real final size — very image-heavy files may land slightly above tight targets.
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Drag & drop your file here
or click to browse · Up to 15 MB
Select fileAccepted: PDF
Your files are processed temporarily and deleted automatically — there is no general cloud storage. File deletion.
How to compress pdf
Simple steps — no software to install.
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Upload the long document
Reports, bundles, agreements.
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Target 400KB
Quality held across many pages.
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Confirm the true size
Shown before you submit.
Why use our Compress PDF
Secure & private
Files are encrypted in transit and deleted automatically after processing.
Fast results
Optimized processing returns your file in seconds.
Free to start
Core tools are free with daily limits — no install required.
Works anywhere
Runs in your browser on any device, anywhere in the world.
Long-form territory
Complete tender responses, full agreements with annexures, semester project reports — documents that are long because they must be — compress into 400KB while every page stays presentable.
Image-rich without regret
At this budget, embedded photos and diagrams keep enough resolution to serve their purpose — the tier where "compressed" stops meaning "visibly compromised" even for mixed content.
- ~15 scanned pages held sharp
- Image-rich documents work
- True final size shown
- Never larger than input
- Free with fair daily limits