二维码 - SERP Analysis

https://cli.im/

https://zh.wikipedia.org/zh-hans/%E4%BA%8C%E7%B6%AD%E7%A2%BC

https://zh.qr-code-generator.com/

https://www.wwei.cn/

https://tool.oschina.net/qr

https://baike.baidu.com/item/%E4%BA%8C%E7%BB%B4%E7%A0%81/2385673

https://www.adobe.com/express/feature/image/qr-code-generator

https://www.microsoft.com/zh-cn/edge/features/qr-code-generator

https://play.google.com/store/apps/details?id=qrcodegenerator.qrcreator.qrmaker.createqrcode&hl=zh