Count selected characters and words

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 2,
    "name": "Count selected characters and words",
    "description": "A simple tool to count selected characters and words.",
    "version": "1.0.4",
    "author": "RianGraphics",
    "browser_action": {
        "default_icon": "tab-icon.png",
        "default_popup": "index.html",
        "default_title": "Count selected characters and words"
    },
    "content_scripts": [
        {
            "matches": [
                ""
            ],
            "js": [
                "contentScript.js"
            ],
            "css": [
                "rc-styles.css"
            ]
        }
    ],
    "permissions": [
        "activeTab",
        "storage"
    ]
}