I generated a barcode with a taifun extension. But for it's just shown in a webviewer. It's not possible to store the barcode in a file.
As I noticed that google "chart api" is deprecated, has someone an idea how to save a barcode?
I also tried to make a screenshot and then crop the image but this doesn't work because of all the different screen sizes of smartphone devices.
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use the Google Charts API instead https://google-developers.appspot.com/chart/
see also https://www.google.com/search?q=charts api barcode
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What can you do with a bar code image in a file?
Why not just save the text?
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...send, print, share it to others, use it in advertisement...
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Sorry, but I don't understand your answer respectively links. Could you please give me another hint?
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For saving, get the barcode result, create a new barcode image and set it as background of a canvas and finally save it, irrespective of any screen size
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Also, if you would be OK with qr codes see here (courtesy of Hossein):
and some blocks, which give an idea of how to save the canvas
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