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Display a chart image in Excel

When you perform a GET operation to retrieve a chart image, the Excel API in Microsoft Graph returns the image as a base-64 string. You can display the base-64 string inside an HTML image tag:

 <img src="data:image/png;base64,{base-64 chart image string}/>

For default behavior, use Image(width=0,height=0,fittingMode='fit').

Following is an example of a chart image returned with the default parameters.

Excel chart image with default height and width.

If you want to customize the display of the image, specify a height, width, and a fitting mode. Here is what the same chart image looks like if you retrieve it with these parameters: Image(width=500,height=500,fittingMode='Fill').