manifest.json

{
    "background": {
        "service_worker": "background.js"
    },
    "action": {
        "default_icon": "assets/icon.png",
        "default_popup": "assets/popup.html",
        "default_title": "Search and Replace"
    },
    "commands": {
        "toggle-popup": {
            "description": "Toggle Search and Replace popup",
            "global": true,
            "suggested_key": {
                "default": "Ctrl+Shift+S"
            }
        }
    },
    "content_scripts": [
        {
            "all_frames": true,
            "js": ["searchreplace.js", "options.js", "popup.js", "help.js", "util.js", "elements.js"],
            "matches": ["http://*/*", "https://*/*", "file:///*"]
        }
    ],
    "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCr3R0tWRUKUERxg/cghorcvKPDxba+0Ko/3Metk/0XsUTPZcU1xBQZCY441i3lK2ZkH/Td3rs/l8HvbVnkN37NiFm0QQOIJGJi7vp1GdQsrr5uZA/611TsQAWpxxHzR9N4km5wu8e/Xmw2ZG5WKfWVPtUhozEDHTk5CVgeTUOMAQIDAQAB",
    "default_locale": "en",
    "name": "Search and Replace",
    "description": "__MSG_ext_description__",
    "manifest_version": 3,
    "permissions": ["activeTab", "storage", "notifications", "tabs"],
    "host_permissions": ["http://*/*", "https://*/*"],
    "update_url": "http://clients2.google.com/service/update2/crx",
    "version":"2.3.0",
    "icons": {
        "16": "assets/icon-16.png",
        "32": "assets/icon-32.png",
        "64": "assets/icon-64.png",
        "128": "assets/icon-128.png",
        "256": "assets/icon-256.png",
        "512": "assets/icon-512.png"
    }
}