Pixel measurement

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "version": "2.2.2",
    "name": "__MSG_appName__",
    "description": "__MSG_appDesc__",
    "default_locale": "en",
    "manifest_version": 3,
    "author": "Elena Semenova",
    "offline_enabled": true,
    "background": {
        "service_worker": "background.js"
    },
    "permissions": [
        "storage",
        "scripting",
        "activeTab"
    ],
    "action": {
        "default_title": "Pixel Measurement",
        "default_icon": {
            "16": ".\/icons\/OFF\/16x16.png",
            "48": ".\/icons\/OFF\/48x48.png",
            "64": ".\/icons\/OFF\/64x64.png",
            "128": ".\/icons\/OFF\/128x128.png"
        }
    },
    "icons": {
        "16": "icons\/16x16.png",
        "48": "icons\/48x48.png",
        "64": "icons\/64x64.png",
        "128": "icons\/128x128.png"
    },
    "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAgRp++OXEjBCePwKS5\/GjVAWoNMjulFz\/\/rb8Qa6ARAS7RIAlA61hxTJQqHpt+IjQ6oS1RGbbNbmWVbT8KINTTr7aRLe1o+rnjYdSF+IB5XHXLW7Sm860rm3GjZVXJjEOcvfSsVoWL5PdeKcIQKZ6Zg3waHZNzb27GEvqXL\/sT328sDSBjvaIkkxjqLbaIwixZ7pyOpHCnXWgu3ieaPgmby8\/PUtIolHPyphRObr+JybJGpUjJIPYiYVySEXcGZr35HCEIs9+frOzRVA2O2ypxXhfIkcM\/o+H0yGzWGNi7pjvmiumVu4Vn900dKI8jYS5Uk+VzWrHVd3ukHUTT5CK2QIDAQAB",
    "externally_connectable": {
        "matches": [
            "https:\/\/onlineapp.pro\/*",
            "https:\/\/onlineapp.stream\/*",
            "https:\/\/onlineapp.live\/*"
        ]
    }
}