manifest.json

{
    "name": "Comic Text",
    "author": "David Mills",
    "manifest_version": 3,
    "version": "3.0.0",
    "description": "Replaces the built-in Chrome tooltip to enable easier reading of the mouseover title-text for popular webcomics, such as xkcd.",
    "content_scripts": [
        {
            "matches": [
                "<all_urls>"
            ],
            "js": [
                "comic-text.js"
            ],
            "run_at": "document_end"
        }
    ],
    "web_accessible_resources": [{
        "matches": ["<all_urls>"],
        "resources": ["config.js"]
    }],
    "options_page": "options.html",    
    "background": {
        "service_worker": "background.js",
        "type": "module"
    },
    "icons": {
        "16": "sigh-16.png",
        "48": "sigh-48.png",
        "128": "sigh-128.png"
    },
    "permissions": [
        "storage"
    ]
}