manifest.json

{

    "name" : "YouMarker",
    "description":"Bookmarking youtube timestamp",
    "version":"1.0.0",
    "host_permissions" : ["https://www.youtube.com/watch?*"],
    "permissions":["storage", "tabs"] ,

    "content_scripts":[
        {
            "matches":[
                "https://*.youtube.com/watch?v=*", 
                "https://www.youtube.com/*"
            ],
            "js":[
                "assets/api/jquery.js",
                "keystrokes.js",
                "ContentScript.js"
            ],
            "css":[
                "assets/css/youtube-btn.css",
                "assets/css/notification.css"
            ]
        }
    ],

    "background":{
        "service_worker":"background.js"
    },

    "web_accessible_resources":[
        {
            "resources":[
                "assets/style.css",
                "assets/fonts/*",
                "assets/*"
            ],
            "matches":["https://*.youtube.com/*"]
        }
    ],

    "icons": {
        "16": "assets/icons/16.png",
        "24": "assets/icons/24.png",
        "32": "assets/icons/32.png"
    },

    "action":{
        "default_title": "Youtube bookmarker",
        "default_popup": "popup.html"
    },

    "manifest_version":3

}