Examine source code of UltraWideo

{
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "description": "__MSG_extension_description__",
  "version": "4.0.9",
  "icons": {
    "32": "icon/32.png",
    "48": "icon/48.png",
    "64": "icon/64.png",
    "128": "icon/128.png"
  },
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "{2339288d-f701-45d0-a57f-a847e9adc6cc}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "browsingActivity"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "alarms",
    "tabs",
    "webNavigation",
    "https://uw.wtf/*",
    "https://uw.devilos.org/*"
  ],
  "web_accessible_resources": [
    "content-scripts/inject.css",
    "locales/*.json",
    "content-scripts/popup.css"
  ],
  "commands": {
    "toggle_activity": {
      "suggested_key": {
        "default": "Alt+Shift+X",
        "mac": "MacCtrl+Command+X"
      },
      "description": "__MSG_command_toggleActivity__"
    },
    "toggle_mode": {
      "suggested_key": {
        "default": "Alt+Shift+Z",
        "mac": "MacCtrl+Command+Z"
      },
      "description": "__MSG_command_toggleMode__"
    },
    "toggle_interface": {
      "suggested_key": {
        "default": "Alt+Shift+A",
        "mac": "MacCtrl+Command+A"
      },
      "description": "__MSG_command_toggleInterface__"
    },
    "voice_input": {
      "suggested_key": {
        "default": "Alt+Shift+V",
        "mac": "MacCtrl+Command+V"
      },
      "description": "__MSG_command_voiceInput__"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "all_frames": true,
      "exclude_matches": [
        "*://*.hcaptcha.com/*",
        "*://challenges.cloudflare.com/*",
        "*://newassets.hcaptcha.com/*",
        "*://www.google.com/recaptcha/*",
        "*://www.gstatic.com/recaptcha/*"
      ],
      "css": [
        "content-scripts/inject.css"
      ],
      "js": [
        "content-scripts/inject.js",
        "content-scripts/popup.js"
      ]
    },
    {
      "matches": [
        "https://uw.wtf/*"
      ],
      "js": [
        "content-scripts/license.js"
      ]
    }
  ],
  "browser_action": {}
}