Source Manifest.json {"update_url": "https://clients2.google.com/service/update2/crx", "name": "__MSG_application_title__", "description": "__MSG_application_description__", "version": "3.0", "permissions": [\t ], "host_permissions": [ \t"https://www.youtube.com/*", "https://*.googlevideo.com/", "https://*.doubleclick.net/*" ], "icons": { "16": "images/icon/youtube_16.png", "32": "images/icon/youtube_32.png", "48": "images/icon/youtube_64.png", "128": "images/icon/youtube_128.png" }, "default_locale": "en", "content_scripts": [ { "matches": [ "https://www.youtube.com/*"], "js": ["inject.js"],\t "run_at": "document_start" } ], "web_accessible_resources": [ {\t"resources": ["contentScript.js"],\t"matches": [ "https://www.youtube.com/*" ] } ], "manifest_version": 3, "commands": { }} Read more