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Was wondering is there a javascript widget or library that turns any BTC address on a website into a popup QR code on hover?

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You can create a QR code for any bitcoin address using Google's QR code maker:

https://chart.googleapis.com/chart?chs=250x250&cht=qr&chl=bitcoin:[your-bitcoin-address-here]

Just point to that as the img src and you'll get something that looks like this:

Note this address is used by a lot of tests as the private key is literally "1".

  • how do you also add in an amount into the QR code? – Patoshi パトシ Nov 7 '15 at 5:58
  • Yes, add ?amount=[amount here] to the url – Jimmy Song Nov 7 '15 at 18:25
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Btcwidget.com allows you to create custom widgets like this with your address.

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Here is a great browser extention that finds a bitcoin address anywhere on the page including in the head. It can track your browsing time on each website with a btc address and then you can designate tip amounts to be paid to that site every certain period of time by your history. http://protip.is/

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