Shrink your PDF,
keep it sharp.

SlimIO makes your PDF smaller in seconds β€” without the blurry text. Free, fast, no install.

⚑ Instant πŸ”’ Private πŸ†“ Free πŸ“¦ No install
Drop your PDF here
or click to browse
Your file runs locally in your browser β€” nothing is uploaded.
Original sizeβ€”
After compressionβ€”
Savedβ€”
↓ Download compressed PDF

How it works

Three steps. No account, no install.

STEP 1

Drop your PDF

Drag a file in, or click to browse. You can pick how strong the compression should be.

STEP 2

We shrink it

SlimIO re-encodes the document to remove dead weight β€” in your browser or on a fast server.

STEP 3

Download

Get your smaller PDF instantly. See exactly how much you saved before you click.

Private by design

Your files stay yours.

Browser modeFiles never leave your device
Auto-deleteServer files removed after each job
No signupNo account, ever

Simple, free pricing

Start free. Upgrade only if you need more.

Most popular

Free

$0 / forever
  • 20 compressions per day
  • Both browser & server mode
  • No account needed

Pro

$5 / month
  • Unlimited compressions
  • Priority speed
  • No ads