Grayscale Screen

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Grayscale Screen",
    "version": "1.0",
    "description": "Converts the screen to grayscale",
    "permissions": [
        "activeTab",
        "scripting"
    ],
    "icons": {
        "48": "icon48.png"
    },
    "host_permissions": [
        "<all_urls>"
    ],
    "action": {
        "default_popup": "popup.html",
        "default_icon": {
            "48": "icon48.png"
        }
    },
    "commands": {
        "toggle-grayscale": {
            "suggested_key": {
                "default": "Ctrl+Shift+G",
                "mac": "MacCtrl+Shift+G"
            },
            "description": "Toggle Grayscale"
        }
    },
    "background": {
        "service_worker": "background.js"
    },
    "web_accessible_resources": [
        {
            "resources": [
                "popup.html",
                "popup.js"
            ],
            "matches": [
                "<all_urls>"
            ]
        }
    ]
}