diff --git a/website/web/sri.txt b/website/web/sri.txt
index d53e079..fd456ed 100644
--- a/website/web/sri.txt
+++ b/website/web/sri.txt
@@ -36,7 +36,7 @@
     "stats.css": "/kY943FwWBTne4IIyf7iBROSfbGd82TeBicEXqKkRwawMVRIvM/Pk5MRa7okUyGIxaDjFQGmV/U1vy+PhN6Jbw==",
     "stats_graph.js": "S/sMNQK1UMMLD0xQeEa7sq3ce8o6oPxwxGlyKVtaHOODjair86dbBDm7cu6pa/elMRDJT1j09jEFjWp+5GbhTw==",
     "tree.css": "xffZ5VGbH0dvaD3pJRj48PttTd29xtU45QozhHi/oJCKy8HU/NkHcGutpx9sOGMuY5tsKn8Pub6Ncsjj9f4TSg==",
-    "tree.js": "26qV04hLcKiZB2Td5Oe/OZ2shdvGZv+xcO7VB1hcrvV3j7Urdvq/mMZ+OT5B8/iP0Ao7KvZKH3EzszXw55mkSA==",
+    "tree.js": "Z7Z83GKVauGBr/+v2OOkkWBWJ5qECr7B0JT9rRmVx37bGwSASWJDRT3B4pk57qk4XLGTAJ4ozq96P1nYLOZDFQ==",
     "up.jpg": "d1ljZJ9f5JekyM6RLFFH2Ua44j6neiQBdUIXOenRTjGppQr3JaeglpQIH6BjPCJL177+TH52U3UIRNS5YAyKIg==",
     "up_right.jpg": "OMmz+n+MxR34P8/fn5t4DkqKqdJRzQbXQ7fAi2lhkZIJGhVs2vIyY1f2hpYoBxDAX1OcYsSE2lqIR2vXNDGZsA==",
     "video.png": "gJtmkfr8I1Kw43pYEKjg6CAjgmhl1vIBKBQ3ZkxCu3wvxQm+6kf93iLrrFiY2WuiXzxEn2Leu52GJzmVN5id0g==",
diff --git a/website/web/static/tree.js b/website/web/static/tree.js
index dffd204..2b99a2f 100644
--- a/website/web/static/tree.js
+++ b/website/web/static/tree.js
@@ -839,8 +839,8 @@ function update(root, computed_node_width=0) {
 
 //download the tree as png file
 const downloadSvg = () => {
-    const svgElement = document.querySelector('svg');
-    const svgCopy = svgElement.cloneNode(true);
+    const svg = document.querySelector('svg');
+    const svgCopy = svg.cloneNode(true);
     const images = svgCopy.querySelectorAll('image');
     const promises = [];
     images.forEach((imageElement) => {
@@ -866,21 +866,21 @@ const downloadSvg = () => {
     });
 
     Promise.all(promises).then(() => {
-        var svgData = new XMLSerializer().serializeToString(svgCopy);
-        var svgBlob = new Blob([svgData], { type: "image/svg+xml;charset=utf-8" });
-        var url = URL.createObjectURL(svgBlob);
-        var img = new Image();
+        let svgData = new XMLSerializer().serializeToString(svgCopy);
+        let svgBlob = new Blob([svgData], { type: "image/svg+xml;charset=utf-8" });
+        let url = URL.createObjectURL(svgBlob);
+        let img = new Image();
         img.onload = function() {
-            var canvas = document.createElement('canvas');
-            canvas.width = svgCopy.width.baseVal.value * 2;
-            canvas.height = svgCopy.height.baseVal.value * 2;
-            var ctx = canvas.getContext('2d');
+            let canvas = document.createElement('canvas');
+            canvas.width = svgCopy.width.baseVal.value;
+            canvas.height = svgCopy.height.baseVal.value;
+            let ctx = canvas.getContext('2d');
             ctx.fillStyle='white';
             ctx.fillRect(0,0,canvas.width,canvas.height)
             ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
 
-            var png = canvas.toDataURL('image/png');
-            var a = document.createElement('a');
+            let png = canvas.toDataURL('image/png');
+            let a = document.createElement('a');
             a.download = 'tree.png';
             a.href = png;
             a.click();