Google Charts API service allows you to generate high-grade QR Codes. You can manage your code substituting the parameters of GET-request

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Comparison of the utilities to generate QR Codes
ciryllic | change size | change color | speed of generation | caching | |
jquery.qrcode.js | more data - generates the slower | ||||
qrcode.js | |||||
Google Charts API | always fast, regardless of the amount of data | cached in the browser as a normal image |
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