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data:image/png;base64 - decoding the HTML

Posted on 2014-07-28
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Last Modified: 2014-07-29
Hi
I have seen some code which really puzzles me, it is:

<image id="OpenLayers_Geometry_Point_6367" cx="312.4132960588904" cy="218.4827694234491" r="1" preserveAspectRatio="none" x="312" y="206" width="125" height="50" xlink:href="data:image/png;base64,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" style="opacity: 1" fill="#000000" fill-opacity="1" stroke="#000000" stroke-opacity="1" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></image>

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I'm looking at doing something similar myself
However, I would like to know how its done on this site first
Is there a way to decode the Data Image link?

Its shows this popup bubble image:
testtest3333Depending on the length of the driver name, the bubble changes in size
the text is not text in the HTML, its all part of the image, so its obviously created server side, but i just wanted to try and figure out a bit more on how to do it and was hoping decoding html might help
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Question by:websss
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käµfm³d   👽 earned 500 total points
ID: 40226008
Is there a way to decode the Data Image link?
Yes. These are known as data URIs. They are most-often encoded, as is the case with this one, in base 64 encoding. So all you need to do is decode the base 64 string. However, the result you end up with will be binary data, so you would want to write it out to disk in order to actually view it. In this example, your image data is:

Decoded Image
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