Examine source code of Bilibili MrBeastify

{
  "manifest_version": 3,
  "name": "Bilibili MrBeastify",
  "version": "1.0.0",
  "icons": {
    "96": "icon.png"
  },
  "description": "Modify Bilibili thumbnails to include MrBeast",
  "action": {
    "default_popup": "settings.html"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://bilibili.com/*",
    "*://*.bilibili.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://bilibili.com/*",
        "*://*.bilibili.com/*"
      ],
      "js": [
        "mrbeastify.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "images/*.png",
        "images/*.json",
        "images/textFlipped/*.png"
      ],
      "matches": [
        "*://bilibili.com/*",
        "*://*.bilibili.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "bilibili-mrbeastify@xianzhe233.github.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}