Examine source code of Song Resources

{
  "manifest_version": 3,
  "name": "Song Resources",
  "version": "1.0",
  "description": "Search Google for the chords, tab, lyrics or karaoke of the song playing in the current tab. Compatible with Youtube, Youtube Music, and Spotify.",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/Icon16.png",
      "48": "icons/Icon48.png",
      "128": "icons/Icon128.png"
    }
  },
  "icons": {
    "16": "icons/Icon16.png",
    "48": "icons/Icon48.png",
    "128": "icons/Icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{22572cd2-d714-4d40-a0f4-981672a06c3e}"
    }
  }
}