100% Free — No sign up needed

Slim your PDF
in seconds

Compress PDF files without losing quality. Fast, free, and private — your files never leave your device.

Drop your PDF here
or choose a file from your device
PDF files only · Max 100MB
PDF
document.pdf
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Slimming your PDF... 0%
Compression level
Gentle
Low
Best quality, moderate size reduction
Recommended
Medium
Great balance of quality and size
Aggressive
Maximum
Smallest file, some quality loss
Done
Your PDF has been slimmed
Before
—
After
—
Saved
—
Files never leave your device
100% free
No sign up needed

How it works

1
Upload your PDF
Drag and drop or browse to select your PDF file from your device.
→
2
Choose compression
Pick your compression level — low, medium, or maximum reduction.
→
3
Download your file
Your slimmed PDF is ready instantly. Download and you're done.

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Frequently asked questions

Is SlimMyPDF really free?
Yes, completely free. No sign up, no credit card, no hidden fees. Compress as many PDFs as you need.
Are my files safe and private?
100%. Your files are processed directly in your browser and never uploaded to any server. We never see your documents.
What's the maximum file size?
Up to 100MB on the free plan. Premium users get unlimited file sizes.
Will compression reduce the quality of my PDF?
It depends on the compression level you choose. Low compression keeps quality nearly identical. Maximum compression reduces quality more but achieves the smallest file size.