主要功能：
识别网页中的二维码，转化为网址，省去手机扫码再传到电脑的过程。纯本地实现，没有后端服务器，避免了隐私问题。
使用方法：
1. 右键单击二维码图像，选择本插件提供的选项“识别”。
2. 在图像查看器中，调整二维码图像的大小和位置。为了更好的识别，请将二维码的内容适当放大并调整至屏幕中央。
3. 点击识别按钮，会提示共享当前屏幕，点击当前屏幕的缩略图后点击确认，在获取截图后会将识别结果显示在弹窗中。
更新说明：
[1.1.0] 调整了控制逻辑，改为使用html按钮发起识别。
[1.0.1] 移除了无用的权限。删除了多余的代码。
github开源页面：
https://github.com/tobygh/qrcode_to_url
依赖于以下优秀的开源项目进行开发：
zxing: https://github.com/zxing-js/browser
browserify: https://github.com/browserify/browserify
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!
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