Examine source code of Web Translate

{
  "manifest_version": 2,
  "version": "6.4",
  "author": "Juraj Mäsiar",
  "default_locale": "en",
  "name": "__MSG_app_name__",
  "description": "__MSG_app_desc__",
  "icons": {
    "48": "48.png",
    "128": "128.png"
  },
  "background": {
    "scripts": [
      "background_wt.worker.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "128": "128.png"
    },
    "default_popup": "popup/popup.html",
    "default_area": "navbar"
  },
  "options_ui": {
    "page": "editor/editor.html",
    "open_in_tab": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+Q"
      },
      "description": "Open pop-up window."
    },
    "translate_page": {
      "suggested_key": {
        "default": "Alt+Shift+W"
      },
      "description": "Translate current page."
    },
    "translate_selection": {
      "suggested_key": {
        "default": "Alt+Z"
      },
      "description": "Translate selected text."
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://translate.google.com/*",
        "https://translate.google.cn/*"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content_scripts/empty_page_detection.js"
      ]
    },
    {
      "matches": [
        "https://translate.google.com/*",
        "https://translate.google.cn/*"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "content_scripts/block/google_block.js"
      ]
    },
    {
      "matches": [
        "https://bing.com/*",
        "https://www.bing.com/*"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "content_scripts/block/bing_block.js"
      ]
    },
    {
      "matches": [
        "https://deepl.com/*",
        "https://www.deepl.com/*"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "content_scripts/block/deepl_block.js"
      ]
    },
    {
      "matches": [
        "https://translate.yandex.ru/*",
        "https://translate.yandex.com/*",
        "https://www.translate.yandex.ru/*",
        "https://www.translate.yandex.com/*"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "content_scripts/block/yandex_block.js"
      ]
    },
    {
      "matches": [
        "https://fanyi.baidu.com/*"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "content_scripts/block/baidu_block.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "editor/editor.css",
    "editor/editor.html",
    "editor/editor.js",
    "utils/svg/resize-corner.svg",
    "128.png"
  ],
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab",
    "scripting",
    "declarativeNetRequestWithHostAccess",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "admin@fastaddons.com_WebTranslate",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "140.0"
    }
  }
}