Page Load Timer

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Page Load Timer",
    "version": "1.0.2",
    "description": "Displays webpage load time in the toolbar",
    "background": {
        "service_worker": "background.js"
    },
    "action": {
        "default_icon": "stopwatch48.png"
    },
    "content_scripts": [
        {
            "matches": [
                "<all_urls>"
            ],
            "js": [
                "browser-polyfill.min.js",
                "performance.js"
            ],
            "run_at": "document_idle"
        }
    ],
    "permissions": [
        "activeTab",
        "storage"
    ],
    "host_permissions": [
        "*:\/\/*\/*"
    ],
    "icons": {
        "48": "stopwatch48.png",
        "96": "stopwatch96.png",
        "128": "stopwatch128.png"
    }
}