Keyword Density Checker

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Keyword Density Checker",
    "version": "3.6",
    "description": "A Chrome extension to check keyword density for a specific keyword.",
    "action": {
        "default_popup": "popup.html",
        "default_icon": {
            "16": "icons\/icon16.png",
            "48": "icons\/icon48.png",
            "128": "icons\/icon128.png"
        }
    },
    "icons": {
        "16": "icons\/icon16.png",
        "48": "icons\/icon48.png",
        "128": "icons\/icon128.png"
    },
    "permissions": [],
    "content_scripts": [
        {
            "matches": [
                "<all_urls>"
            ],
            "js": [
                "content.js"
            ]
        }
    ],
    "background": {
        "service_worker": "background.js"
    }
}