diff --git a/README.md b/README.md
index 4e61f7b..f077492 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,8 @@ $ ./bin/shaaaaaaaaaaaaa bad-domain
 }
 ```
 
+##Shaaaaaaaaaaaaa Chrome Extension
+Version one. [Available on Chrome Web Store](https://chrome.google.com/webstore/detail/check-ssl/adlogjmkkcancjpododcnjndnmkooghi) for download.
 
 ## Author
 
diff --git a/chrome-extension/app.js b/chrome-extension/app.js
new file mode 100644
index 0000000..d7088d1
--- /dev/null
+++ b/chrome-extension/app.js
@@ -0,0 +1,39 @@
+function formatURL() {
+	var currURL = window.location.host;
+	var url = currURL;
+	// remove 'www'
+	if (currURL.indexOf("www") >= 0){
+		url = currURL.split("www.")[1];
+	}
+	// remove any path after web address
+	if(window.location.pathname !== "/") {
+		var pathname = window.location.pathname;
+		url = url.split(pathname)[0];
+	}
+	return url;
+}
+
+function sendRequest(url) {
+	var xhr = new XMLHttpRequest();
+	xhr.open("GET", ("https://shaaaaaaaaaaaaa.com/api/check/" + url), true);
+	xhr.onreadystatechange = function() {
+	  if (xhr.readyState == 4) {
+	    var resp = JSON.parse(xhr.responseText);
+	    var diagnosis = resp.diagnosis;
+	    switch (diagnosis) {
+	    	case "good":
+	    		chrome.runtime.sendMessage({diagnosis: "good"});
+	    		break;
+	    	case "almost":
+	    		chrome.runtime.sendMessage({diagnosis: "almost"});
+		    	break;
+	    	case "bad":
+	    		chrome.runtime.sendMessage({diagnosis: "bad"});
+		    	break;
+	    }
+	  }
+	}
+	xhr.send();
+}
+
+sendRequest(formatURL());
diff --git a/chrome-extension/background.js b/chrome-extension/background.js
new file mode 100644
index 0000000..b3db9e9
--- /dev/null
+++ b/chrome-extension/background.js
@@ -0,0 +1,27 @@
+//listens for tab change
+chrome.tabs.onActivated.addListener(function() {
+	chrome.browserAction.setBadgeBackgroundColor({color: [255,0,0,255]});
+	chrome.tabs.executeScript({file: "app.js"}, function() {
+        //on error - log error message and set badge to transparent
+        if (chrome.runtime.lastError) {
+        	chrome.browserAction.setBadgeBackgroundColor({color: [0,0,0,0]});
+        	chrome.browserAction.setBadgeText({text: ""});
+            console.error(chrome.runtime.lastError.message);
+        }
+    });
+});
+
+
+chrome.runtime.onMessage.addListener(
+  function(request, sender) {
+    //log diagnosis to badge
+    if (request.diagnosis == "bad") {
+      chrome.browserAction.setBadgeText({text: "bad"});
+    }
+    if (request.diagnosis == "almost") {
+    	chrome.browserAction.setBadgeText({text: "almost"});
+    }
+    if (request.diagnosis == "good") {
+    	chrome.browserAction.setBadgeText({text: "good"});
+    }
+});
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diff --git a/chrome-extension/icon.png b/chrome-extension/icon.png
new file mode 100644
index 0000000..bd1dd9f
Binary files /dev/null and b/chrome-extension/icon.png differ
diff --git a/chrome-extension/manifest.json b/chrome-extension/manifest.json
new file mode 100644
index 0000000..e0f4935
--- /dev/null
+++ b/chrome-extension/manifest.json
@@ -0,0 +1,27 @@
+{
+  "manifest_version": 2,
+  "name": "Shaaaaaaaaaaaaa Chrome Extension",
+  "short_name": "Check SSL",
+  "description": "Checks if websites have weak SHA-1 SSL certificates.",
+  "version": "1.0",
+  "permissions": [
+    "https://*/",
+    "http://*/",
+    "https://shaaaaaaaaaaaaa.com/api/check/*",
+    "tabs"
+  ],
+  "content_scripts": [
+    {
+      "matches": ["*://*/*"],
+      "js": ["app.js"]
+    }
+  ],
+  "background": {
+      "scripts": ["background.js"],
+      "persistent": false
+    },
+  "browser_action": {
+    "default_icon": "icon.png"
+  },
+  "web_accessible_resources": ["https://shaaaaaaaaaaaaa.com/api/check/*"]
+}
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