Untitled

chart.php
<script>
        //<![CDATA[
        (function() {
            window.onload = function(){
                html2canvas(document.getElementById('chart'), {
                    "onrendered": function(canvas) {
                        var img = new Image();
                        img.onload = function() {
                            img.onload = null;
                            console.log(canvas.toDataURL("image/png"));
                            window.localStorage.setItem("imgURL", canvas.toDataURL("image/png"));
                           };
                        img.onerror = function() {
                            img.onerror = null;
                            if(window.console.log) {
                                window.console.log("Not loaded image from canvas.toDataURL");
                            } else {
                                //alert("Not loaded image from canvas.toDataURL");
                            }
                        };
                        img.src = canvas.toDataURL("image/png");
                    }
                });
            };
        })();
        //]]>
</script>
<body>
    <a href="outputforcustomer.php" class="button">Report</a>
    <a href="pdfGen.php" disabled class="button">Download</a>
    ..more code to generate the chart
</body>

<?php
    $pdf = new FPDF();
    $pdf->AddPage();
    //over here I want to add the image from the chart.php page whose data url is now in the localstorage.
    ..more code to generate report
    $pdf->output();
 ?>