diff --git a/index.js b/index.js
index 94d6662..2a292fa 100644
--- a/index.js
+++ b/index.js
@@ -1,8 +1,4 @@
-// const calcWidth = require('./libs/calc-text-width.js').Verdana12
-
 module.exports = function ({subject, status, color = '4C1'}) {
-  // const sbl = calcWidth(subject) - subject.length
-  // const stl = calcWidth(status) - status.length
   const charWidth = 7.3
 
   const sbTextWidth = subject.length * charWidth
diff --git a/package-lock.json b/package-lock.json
index b3e50d7..51affee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,12 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@amio/micro-cors": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/@amio/micro-cors/-/micro-cors-0.0.6.tgz",
+      "integrity": "sha512-/YTpW+RCpceWDEu3nF6N2EAGupNYrNWrdpqlSxxhgovM92mpiySfn3iFoH+Xp5YnX7CYo7Te96Nl2ZdunWbYhw==",
+      "dev": true
+    },
     "fast-decode-uri-component": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fast-decode-uri-component/-/fast-decode-uri-component-1.0.0.tgz",
diff --git a/package.json b/package.json
index 31bb050..6949bf4 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,8 @@
   "author": "Amio <amio.cn@gmail.com>",
   "license": "ISC",
   "devDependencies": {
+    "@amio/micro-cors": "0.0.6",
     "find-my-way": "^1.13.0"
-  }
+  },
+  "dependencies": {}
 }
diff --git a/service.js b/service.js
index 96db76d..425c4f0 100644
--- a/service.js
+++ b/service.js
@@ -1,4 +1,5 @@
 const http = require('http')
+const cors = require('@amio/micro-cors')()
 const router = require('find-my-way')()
 const badgen = require('.')
 
@@ -16,5 +17,6 @@ router.get('/badge/:subject/:status', generate)
 router.get('/badge/:subject/:status/:color', generate)
 router.get('/', serveReadme)
 
-const server = http.createServer((req, res) => router.lookup(req, res))
+const handler = cors((req, res) => router.lookup(req, res))
+const server = http.createServer(handler)
 server.listen(3000)