Is my data uploaded to a server?

No. All processing happens locally in your browser. Your files and text remain on your device, ensuring total privacy.

Does this tool work offline?

Yes! Because it relies on browser-native APIs and WebAssembly/Web Workers, it functions perfectly even without an active internet connection once loaded.

Track 2 Parser

Developer Tools

Decode magnetic stripe Track 2 data for payment card testing.

Loading tool module...

KaruviLab Client Engine

How it Works: Magnetic Stripe Data

Learn how the black strip on the back of your credit card stores your data.Read more

📚 Learn More

Quick guide, tips, FAQ, deep dive, and documentation.Read more

Loading tool module...

KaruviLab Client Engine

Track 2 Parser

Developer Tools

Decode magnetic stripe Track 2 data for payment card testing.

Loading tool module...

KaruviLab Client Engine

How it Works: Magnetic Stripe Data

Learn how the black strip on the back of your credit card stores your data.Read more

📚 Learn More

Quick guide, tips, FAQ, deep dive, and documentation.Read more