CraftQR Command Block will help you to insert QR code into your Minecraft world  quickly without hassle. Just follow the instruction below, and then you will have as much QR code on your map as you want. These QR codes can be scanned by visitors in your world with a phone. You can now create a link to your homepage or social media or anything you want to.

CraftQR Command Block Thumbnail

Screenshots:

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CraftQR Command Block Download Links

For all Minecraft versions

Please follow this page to generate the command you want and for detailed instructions.