Examine source code of Linkapedia

{
  "manifest_version": 2,
  "name": "Linkapedia",
  "version": "1.2resigned1",
  "description": "Find out related topics on the pages you navigate",
  "icons": {
    "16": "images/linkapedia.png",
    "128": "images/linkalogo_128.png"
  },
  "applications": {
    "gecko": {
      "id": "juanidrobo@linkapedia.com",
      "strict_min_version": "45.0"
    }
  },
  "permissions": [
    "tabs",
    "activeTab",
    "http://*/*",
    "https://*/*"
  ],
  "browser_action": {
    "default_icon": "images/linkalogo_128.png",
    "default_title": "Explore topics on this page",
    "default_popup": "index.html"
  }
}