Examine source code of Song Link Finder

{
  "manifest_version": 2,
  "name": "Song Link Finder",
  "version": "1.0.0",
  "description": "Search for a song and get shareable links for Spotify, Apple Music, YouTube Music, Tidal, Deezer and more.",
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "songlink-finder@georgestefanis.com",
      "data_collection_permissions": {
        "required": [
          "searchTerms"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/icon-48.svg",
    "default_title": "Song Link Finder",
    "default_popup": "popup.html"
  },
  "permissions": [
    "clipboardWrite",
    "https://api.song.link/*",
    "https://itunes.apple.com/*"
  ]
}