Convert an image file to Base64 or other string value

Hi,

I need toread the contentof an image file(JPEG, PNG,TIFF) andconvert that file toBase64string.

Does anyone know ifyou cando these thingson Javascript, in InDesign?

Thanks forany help

EDIT: I forgot toadd thatI knowmy imagepath onthe filesystem,itresidesinsideof my filesystem. I obtain that path thanks to InDesign...