diff --git a/icon/icon.svg b/icon/icon.svg
new file mode 100644
index 0000000..f5debb6
--- /dev/null
+++ b/icon/icon.svg
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   id="svg8"
+   version="1.1"
+   viewBox="0 0 210 210"
+   height="210mm"
+   width="210mm">
+  <defs
+     id="defs2" />
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     transform="translate(0,-87)"
+     id="layer1">
+    <text
+       transform="scale(0.75636672,1.32211)"
+       id="text3723"
+       y="195.51381"
+       x="-80.762886"
+       style="font-style:normal;font-weight:normal;font-size:147.57217407px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.27600777"
+       xml:space="preserve"><tspan
+         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:147.57217407px;font-family:'Fira Code';-inkscape-font-specification:'Fira Code';stroke-width:0.27600777"
+         y="195.51381"
+         x="-80.762886"
+         id="tspan3721"> ( )</tspan></text>
+    <flowRoot
+       style="fill:black;fill-opacity:1;stroke:none;font-family:sans-serif;font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;letter-spacing:0px;word-spacing:0px"
+       id="flowRoot3725"
+       xml:space="preserve"><flowRegion
+         id="flowRegion3727"><rect
+           y="232.27223"
+           x="17.142857"
+           height="112.85714"
+           width="58.57143"
+           id="rect3729" /></flowRegion><flowPara
+         id="flowPara3731"></flowPara></flowRoot>    <g
+       style="fill:#000000;stroke:none"
+       transform="matrix(0.00893188,-0.00238274,-0.00240936,-0.00907848,63.546025,254.34852)"
+       id="g3741">
+      <path
+         d="m 11870,11945 c -19,-7 -91,-42 -160,-77 -187,-96 -231,-97 -443,-6 -154,65 -217,73 -264,34 -47,-40 -50,-85 -19,-268 16,-97 23,-169 19,-198 -9,-74 -47,-139 -143,-250 -132,-153 -154,-210 -105,-269 33,-38 91,-57 238,-76 217,-29 271,-64 382,-250 84,-140 138,-195 191,-195 63,0 95,34 175,192 113,224 149,252 385,308 140,33 199,61 220,102 32,61 7,106 -136,249 -73,72 -126,135 -141,165 -23,48 -24,54 -21,259 3,223 -2,252 -44,280 -28,18 -86,18 -134,0 z"
+         id="path3733" />
+      <path
+         d="m 8590,11439 c -19,-12 -69,-54 -111,-94 -41,-39 -100,-84 -131,-99 -51,-25 -66,-27 -199,-30 -148,-3 -187,-12 -219,-51 -27,-32 -14,-100 38,-213 28,-59 53,-117 57,-130 15,-53 5,-139 -29,-250 -46,-146 -47,-184 -4,-224 36,-33 31,-33 288,-12 98,8 142,-5 235,-69 188,-129 217,-139 274,-91 33,28 50,76 76,213 26,137 61,190 185,276 197,138 194,213 -15,325 -151,81 -184,119 -236,279 -38,117 -51,143 -85,170 -34,27 -80,27 -124,0 z"
+         id="path3735" />
+      <path
+         d="M 5047,5777 -1,735 367,368 735,0 l 5045,5045 5045,5045 -365,364 -365,365 z"
+         id="path3737" />
+      <path
+         d="m 10925,9408 c -16,-6 -74,-39 -128,-74 -132,-84 -173,-93 -315,-71 -164,26 -206,21 -238,-28 -24,-36 -21,-93 11,-210 40,-145 34,-203 -34,-335 -77,-150 -79,-220 -7,-257 17,-9 78,-18 155,-23 69,-5 142,-14 161,-21 49,-17 107,-59 165,-119 78,-81 122,-110 168,-110 57,0 96,45 137,157 59,165 92,202 250,283 190,98 199,168 38,296 -140,112 -167,156 -193,317 -17,108 -32,153 -62,179 -25,23 -71,30 -108,16 z"
+         id="path3739" />
+    </g>
+  </g>
+</svg>
diff --git a/js/main.js b/js/main.js
index ddc8af7..6417680 100644
--- a/js/main.js
+++ b/js/main.js
@@ -49,14 +49,20 @@ function wrapInner(parent, wrapper, attribute, attributevalue) {
       }
 }
 
+function wrapInner(parent, wrapper, className) {
+    if (typeof wrapper === "string")
+        wrapper = document.createElement(wrapper);
 
+    wrapper.classList.add(className);
+    var div = parent.appendChild(wrapper);
+
+    while(parent.firstChild !== wrapper)
+        wrapper.appendChild(parent.firstChild);
+}
 
-// Wrap the insides of the <pre> tags in <code> tags for highlight.js
 function wrapPre() {
     for(let el of document.querySelectorAll('pre')) {
-	let orig = el.innerHTML;
-
-	el.innerHTML = '<code class="lisp">' + orig + "</code>";
+	wrapInner(el, 'code', 'lisp');
     }
 }
 
diff --git a/manifest.json b/manifest.json
index 7740d9a..12741e3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,8 @@
     "description": "Adds a simple table of contents and syntax highlighting to the web version of Practical Common Lisp by Peter Seibel.",
 
     "icons": {
-	"48": "icons/border-48.png"
+	"48": "./icon/icon.svg",
+	"96": "./icon/icon.svg"
     },
 
     "background": {