manifest.json

{

  "manifest_version": 2,
  "name": "Web Page Image Analyzer",
  "version": "0.1",

  "description": "Test how much you can save by compressing your images with TinyPNG. The extension adds a button to easily analyze compression of images on a web page.",

  "permissions": [
    "activeTab"
  ],

  "icons": {
    "16": "icons/panda-computer-16.png",
    "32": "icons/panda-computer-32.png",
    "48": "icons/panda-computer-48.png",
    "64": "icons/panda-computer-64.png",
    "128": "icons/panda-computer-128.png",
    "256": "icons/panda-computer-256.png"
  },

  "background": {
    "scripts": ["background.js"]
  },
  
  "browser_action": {
    "default_icon": {
      "16": "icons/panda-computer-16.png",
      "19": "icons/panda-computer-19.png",
      "32": "icons/panda-computer-32.png",
      "38": "icons/panda-computer-38.png",
      "48": "icons/panda-computer-48.png",
      "64": "icons/panda-computer-64.png"
    }
  }
}