Opening button

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "__MSG_extensionName__",
    "description": "__MSG_extensionDescription__",
    "manifest_version": 3,
    "default_locale": "en",
    "version": "1.4.3",
    "icons": {
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        "128": "icon.png"
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    "content_scripts": [
        {
            "matches": [
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                "*:\/\/*.jut.su\/*",
                "*:\/\/*.animego.me\/*",
                "*:\/\/*.amedia.online\/*"
            ],
            "js": [
                "main.js"
            ]
        }
    ],
    "web_accessible_resources": [
        {
            "resources": [
                "_locales\/en\/messages.json",
                "_locales\/ru\/messages.json"
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            "matches": [
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    ],
    "action": {
        "default_icon": "icon.png",
        "default_popup": "popup.html"
    },
    "permissions": [
        "storage"
    ],
    "background": {
        "service_worker": "background.js"
    }
}