Bookmarks Checker - Remove broken links

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "version": "25.9.9",
    "name": "__MSG_ext_name__",
    "description": "__MSG_ext_description__",
    "manifest_version": 3,
    "default_locale": "en",
    "background": {
        "service_worker": "background.js"
    },
    "permissions": [
        "bookmarks"
    ],
    "host_permissions": [
        "https:\/\/*\/",
        "http:\/\/*\/"
    ],
    "action": {
        "default_icon": {
            "16": "assets\/images\/main-icon16.png",
            "32": "assets\/images\/main-icon32.png",
            "48": "assets\/images\/main-icon48.png",
            "128": "assets\/images\/main-icon128.png"
        },
        "default_title": "Bookmarks Checker"
    },
    "icons": {
        "16": "assets\/images\/main-icon16.png",
        "32": "assets\/images\/main-icon32.png",
        "48": "assets\/images\/main-icon48.png",
        "128": "assets\/images\/main-icon128.png"
    },
    "web_accessible_resources": [
        {
            "resources": [
                "\/assets\/*"
            ],
            "matches": [
                "<all_urls>"
            ]
        }
    ]
}