How to create a QR code reader in a HTML5 website

Question

I was looking for possibility to create QR code reader in my HTML5 based web page  I ve done some googling and all the links point me to the mobile applications    Please help me with some pointers as to how I can use HTML5 and JavaScript to read a QR code containing a url and then redirect the browser to that URL

User · Answer

The algorithm that drives http   www webqr com is a JavaScript implementation of https   github com LazarSoft jsqrcode  I haven t tried how reliable it is yet  but that s certainly the easier plug-and-play solution  client- or server-side  out of the two

User · Answer

Reader they show at  http   www webqr com index html works like a charm  but literaly  you need the one on the webpage  the github version it s really hard to make it work  however  it is possible  The best way to go is reverse-engineer the example shown at the webpage   However  to edit and get the full potential out of it  it s not so easy  At some point I may post the stripped-down reverse-engineered QR reader  but in the meantime have some fun hacking the code   Happy coding

User · Answer

The jsqrcode library by Lazarsoft is now working perfectly using just HTML5  i e  getUserMedia  WebRTC   You can find it on GitHub   I also found a great fork which is much simplified  Just one file  plus jQuery  and one call of a method  see html5-qrcode on GitHub

User · Answer

There aren t many JavaScript decoders   There is one at http   www webqr com index html  The easiest way is to run ZXing or similar on your server  You can then POST the image and get the decoded result back in the response

[javascript] How to create a QR code reader in a HTML5 website?

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