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copied!<p>When you visit the site, paste this in the console (overwriting the malfunctioning function).</p> <pre><code> function getImgData(chartContainer) { var chartArea = chartContainer.getElementsByTagName('svg')[0].parentNode; var svg = chartArea.innerHTML; var doc = chartContainer.ownerDocument; var canvas = doc.createElement('canvas'); canvas.setAttribute('width', chartArea.offsetWidth); canvas.setAttribute('height', chartArea.offsetHeight); canvas.setAttribute( 'style', 'position: absolute; ' + 'top: ' + (-chartArea.offsetHeight * 2) + 'px;' + 'left: ' + (-chartArea.offsetWidth * 2) + 'px;'); doc.body.appendChild(canvas); canvg(canvas, svg); var imgData = canvas.toDataURL("image/png"); canvas.parentNode.removeChild(canvas); return imgData; } </code></pre> <p>In JS it was searching for an iframe bla bla to get the svg.</p> <p><br/> To automatically save the image, you can just let the method being invoked programmatically.</p> <pre><code>document.body.addEventListener("load", function() { saveAsImg( document.getElementById("pie_div")); // or your ID }, false ); </code></pre> <p><br/> For saving images serverside, this post could be helpful <a href="https://stackoverflow.com/questions/11511511/how-to-save-a-png-image-server-side-from-a-base64-data-string#answer-11511552">save a PNG image server-side</a></p> <p><strong>Update</strong><br/> Posting images to PHP (index.js)</p> <pre><code>function saveToPHP( imgdata ) { var script = document.createElement("SCRIPT"); script.setAttribute( 'type', 'text/javascript' ); script.setAttribute( 'src', 'save.php?data=' + imgdata ); document.head.appendChild( script ); } function save() { var canvas = document.getElementById("canvas"), // Get your canvas imgdata = canvas.toDataURL(); saveToPHP( imgdata ); } function drawOnCanvas() { var canvas = document.getElementById("canvas"), // Get your canvas ctx = canvas.getContext("2d"); ctx.strokeStyle = "#000000"; ctx.fillStyle = "#FFFF00"; ctx.beginPath(); ctx.arc(100,99,50,0,Math.PI*2,true); ctx.closePath(); ctx.stroke(); ctx.fill(); } drawOnCanvas(); // Test save(); </code></pre> <p>save.php</p> <pre><code><?php // Get the request $data = $_GET['data']; // Save to your DB. ?> </code></pre>

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