Narrower

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Narrower",
    "description": "Add margins to wide pages.",
    "version": "1.1",
    "author": "Andrey Leshenko",
    "icons": {
        "16": "images\/icon16.png",
        "32": "images\/icon32.png",
        "48": "images\/icon48.png",
        "128": "images\/icon128.png"
    },
    "action": {
        "default_icon": {
            "16": "images\/icon16.png",
            "19": "images\/popup_icon19.png",
            "24": "images\/icon24.png",
            "32": "images\/icon32.png",
            "38": "images\/popup_icon38.png"
        },
        "default_popup": "popup.html"
    },
    "background": {
        "service_worker": "service_worker.js",
        "type": "module"
    },
    "permissions": [
        "activeTab",
        "scripting",
        "storage"
    ]
}