Examine source code of Fast Image Research

{
  "manifest_version": 2,
  "name": "Fast Image Research",
  "version": "1.503",
  "author": "USA Cyborg",
  "homepage_url": "http://usacyborg.com/FastImageResearch",
  "description": "Right click any image to instantly get reverse image search results from Google, TinEye, Yandex, Bing, or a combination.",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "96": "icons/icon96.png"
  },
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab"
  ],
  "optional_permissions": [
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "js/FastImageResearch.js",
      "js/Browser.js",
      "js/SearchAgents.js",
      "js/Settings.js",
      "js/ContextMenuOptions.js",
      "js/API.js"
    ]
  },
  "options_ui": {
    "page": "html/options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "fastimageresearch@usacyborg.com"
    }
  }
}