Which chains are built in?

Bitcoin, Litecoin, Bitcoin Cash, Dogecoin, and Dash, each with real address validation. Anything else works through the custom scheme field.

The URI convention wallets understand: scheme:address?amount=…&label=…&message=… Most chains adopted it, which is why one builder covers so many.

Why does the custom mode validate less?

Because we won't pretend to know every chain's address rules. Custom mode checks the scheme and the basic address shape, then encodes exactly what you typed — test the code with your wallet before printing it.

Free Crypto Payment QR Code Generator

Pick a chain — or type your own scheme — and get a BIP-21 payment code. Free forever — no signup, no watermark, generated entirely in your browser.

Frequently asked questions

Which chains are built in?: Bitcoin, Litecoin, Bitcoin Cash, Dogecoin, and Dash, each with real address validation. Anything else works through the custom scheme field.
What is BIP-21?: The URI convention wallets understand: scheme:address?amount=…&label=…&message=… Most chains adopted it, which is why one builder covers so many.
Why does the custom mode validate less?: Because we won't pretend to know every chain's address rules. Custom mode checks the scheme and the basic address shape, then encodes exactly what you typed — test the code with your wallet before printing it.