Examine source code of Spotify Details Extractor

{
  "manifest_version": 3,
  "name": "Album Details Extractor",
  "description": "Extract album metadata from Spotify, Qobuz, Tidal, Apple Music, Deezer, and Bandcamp to JSON on your clipboard.",
  "version": "4.0.0",
  "homepage_url": "https://github.com/afonsojramos/album-details-extractor",
  "browser_specific_settings": {
    "gecko": {
      "id": "{8301b4fd-b04f-40f7-be18-55f0da220794}",
      "strict_min_version": "121.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {},
  "permissions": [
    "scripting",
    "tabs",
    "contextMenus",
    "notifications",
    "clipboardWrite",
    "activeTab"
  ],
  "icons": {
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "host_permissions": [
    "*://*.spotify.com/*",
    "*://*.qobuz.com/*",
    "*://*.tidal.com/*",
    "*://music.apple.com/*",
    "*://*.deezer.com/*",
    "*://*.bandcamp.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://open.spotify.com/*"
      ],
      "js": [
        "spotify-menu.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://play.qobuz.com/*"
      ],
      "js": [
        "qobuz-menu.js"
      ],
      "run_at": "document_idle"
    }
  ]
}