01
Pick your game
Choose the game you're scanning codes for.
Scan · Explore · Your browser
Point at the code
Sleeve reads the code printed on a trading card with your phone's camera and opens the matching result on Cardmarket in your own browser. That's it.
Get on iPhone
Get on Android
Android coming soon
Scan to install on iPhoneAndroid is still in testing
No account. Everything local. Just the code → your browser.
For collectors,
by collectors.
Real cards. Real results.
How it works
Three simple steps
02
Hold the code in the frame
Sleeve reads the code on your device and waits for confirmation.
03
Open the page in your browser
The matching result opens on the market in your own browser.
What Sleeve doesn't do
A focused tool, by design
No prices, listings or stock
It never fetches or shows anything from Cardmarket.
Card images stay on your phone
Your phone does the reading itself — no photo of your card is ever uploaded.
No account or sign-in
Nothing to register, nothing to profile.
No card database to download
Sleeve stays small and quick, and new sets are added without you doing anything.
Supported games
Works with the games you collect
Sleeve opens Cardmarket, the marketplace Europe buys and sells on, and the only one it opens. If you trade somewhere else, it has nothing to point you at.
The honest part
It's not always perfect — and that's okay.
It has read card after card at a real event — through single sleeves, double sleeves and toploaders, in whatever light the hall had — and it holds up well. Not perfectly, though. So Sleeve shows you the code it read and waits for your go-ahead before opening anything.