Below Code convert the image file to base64 which can be used to compare image etc .
var imgvar = new Image();
imgvar.src = SourceOfFile;
imgvar.onload = function () {
var canvas = document.createElement(“canvas”);
canvas.width = this.width;
canvas.height = this.height;
var ctx = canvas.getContext(“2d”);
ctx.drawImage(this, 0, 0);
var dataURL = canvas.toDataURL(“image/png”);
var base64Image = dataURL.replace(/^data:image/(png|jpg);base64,/, “”);
Thanks
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