Examine source code of TabFind

{
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_title": "TabFind",
    "default_popup": "popup/tabfind.html"
  },
  "description": "Manage your tabs. Easy to search, switch, delete, and find duplicates.",
  "homepage_url": "https://github.com/rob-slezak/TabFind",
  "icons": {
    "48": "icons/tabfind-48.png"
  },
  "manifest_version": 2,
  "name": "TabFind",
  "options_ui": {
    "page": "options/tabfind.html"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "version": "3.3",
  "browser_specific_settings": {
    "gecko": {
      "id": "{093a42e3-86a6-4534-891e-e51d64581945}"
    }
  }
}