100% Free — No sign up needed

Make Your PDF Smaller
Online Free — In Seconds

Compress PDF files and reduce PDF file size without losing quality. Fast, free and secure — no sign up needed, your files are deleted from our servers instantly after compression.

Drop your PDF here
or choose a file from your device
PDF files only · Max 100MB
PDF
document.pdf
—
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 deleted instantly after compression
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 sent securely to our servers for compression and deleted immediately afterwards. We never store or view your documents.
What's the maximum file size?
Up to 100MB per file.
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.
✅
Your PDF is ready!
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