Read it - just read website. Text mode

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "version": "1.0.0",
    "name": "__MSG_name__",
    "description": "__MSG_description__",
    "permissions": [
        "activeTab",
        "storage",
        "scripting"
    ],
    "manifest_version": 3,
    "default_locale": "en",
    "action": {
        "default_icon": "assets\/images\/reader128.png"
    },
    "content_scripts": [
        {
            "matches": [
                "<all_urls>"
            ],
            "js": [
                "main.js"
            ],
            "run_at": "document_end",
            "all_frames": true
        }
    ],
    "background": {
        "service_worker": "bg.js"
    },
    "icons": {
        "16": "assets\/images\/reader16.png",
        "32": "assets\/images\/reader32.png",
        "48": "assets\/images\/reader48.png",
        "128": "assets\/images\/reader128.png"
    },
    "web_accessible_resources": [
        {
            "resources": [
                "assets\/images\/*.png",
                "assets\/images\/*.svg",
                "assets\/fonts\/*",
                "assets\/main.css"
            ],
            "matches": [
                "<all_urls>"
            ]
        }
    ],
    "host_permissions": [
        "<all_urls>"
    ],
    "content_security_policy": {
        "extension_pages": "script-src 'self'; object-src 'self'",
        "sandbox": "sandbox allow-scripts allow-popups allow-modals allow-downloads; script-src 'self'; child-src 'self';"
    }
}