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Editorial Team
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Asked: 2026-05-21T10:44:18+00:00

I’m calling this url from Google Charts to place a custom icon on my

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I’m calling this url from Google Charts to place a custom icon on my Google map.
http://chart.apis.google.com/chart?chst=d_bubble_icon_text_small&chld=home|bbT|HC|52B552|000000

In order to make my map more readable on a mobile browser, I’d like to set the transparency of the returned image, but I can’t seem to find a way to do so. This Google Chart api page, http://code.google.com/apis/chart/docs/chart_params.html states that I can specify a value in the 00 – FF range, but when I try adding a value to my original url, http://chart.apis.google.com/chart?chst=d_bubble_icon_text_small&chld=home|bbT|HC|52B552AA|000000, it returns a 404 error.

Is this possible?

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1 Answer

  1. Editorial Team

    Yes it is possible.
    You need to add chf=bg,s,FF000033 (Or some other color and alpha) that you want for the background
    http://chart.googleapis.com/chart?chst=d_bubble_icon_text_small&chf=bg,s,FF000033&chld=home|bbT|HC|52B552|000000

    (Edit: I missed the last 0 in the URL. Now it is fixed)

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