📇 QR Code

Generate QR codes in Deno, as base64-encoded images, completely dependency-free and requires no binary.

This is a port of zenozeng/node-yaqrcode, which itself is a port of the QR code generator in the d-project.

import { qrcode } from "https://raw.githubusercontent.com/denorg/qrcode/master/mod.ts";
const base64Image = qrcode("bitcoin:ADDRESS?amount=0.5&label=ORDER"); // data:image/gif;base64,...

You can also add a custom size by specifying size in the second parameter:

const fixedSizeImage = qrcode("bitcoin:ADDRESS?amount=0.5&label=ORDER", { size: 500 });

Alternatively, you can use it directly from the CLI:

deno run https://raw.githubusercontent.com/denorg/qrcode/master/cli.ts <text>

You can also install it globally using the following:

deno install qrcode https://raw.githubusercontent.com/denorg/qrcode/master/cli.ts

Then, the package is available to run:

qrcode <text>

👩‍💻 Development

Run tests:

deno test

Notes

• To support typeNumber 40, use the RS_BLOCK_TABLE from davidshimjs/qrcodejs
• To support UTF-8, use the code from davidshimjs/qrcodejs
• Returns a base64-encoded image URL

📄 License

• MIT © Denorg
• Original repo: MIT © Zeno Zeng
• “QR Code” is registered trademark of Denso Wave