rat.png

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "rat.png",
    "description": "replaces all images with rat... or custom image",
    "version": "1.0",
    "manifest_version": 3,
    "icons": {
        "32": "ratbase.png",
        "64": "ratbase.png",
        "128": "ratbase.png"
    },
    "action": {
        "default_popup": "popup.html",
        "default_icon": "ratbase.png"
    },
    "permissions": [
        "storage"
    ],
    "content_scripts": [
        {
            "matches": [
                "<all_urls>",
                "file:\/\/\/*"
            ],
            "js": [
                "replacer.js"
            ]
        }
    ]
}