Examine source code of LikeToDownload

{
  "manifest_version": 2,
  "name": "LikeToDownload",
  "version": "1.1.0",
  "description": "Download media from liked/bookmarked Twitter/X posts.",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "permissions": [
    "downloads",
    "storage",
    "https://twitter.com/*",
    "https://x.com/*",
    "https://pbs.twimg.com/*",
    "https://video.twimg.com/*"
  ],
  "background": {
    "scripts": [
      "localization.js",
      "database.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*",
        "https://x.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "page-observer.js"
  ],
  "browser_action": {
    "default_title": "LikeToDownload",
    "default_icon": {
      "16": "icons/icon.svg",
      "32": "icons/icon.svg"
    },
    "default_popup": "options.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "like-to-download@manatails.net",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}