Examine source code of YTSummarizer

{
  "manifest_version": 2,
  "name": "YTSummarizer",
  "version": "1.3",
  "description": "An extension to generate summary of YouTube Videos.",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon.png",
    "96": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8453dba1-fcd7-41bb-a7e3-51a26a7443a0}"
    }
  }
}