Focus: Batch Open & Close Websites Extension One click: Open all predefined websites.Double click: Close all listed websites and sub-domains. Read more
Source Manifest.json {"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 3, "name": "__MSG_appName__", "description": "__MSG_appDescription__", "version": "1.0.1", "default_locale": "en", "background": { "service_worker": "background.js" }, "action": { "default_icon": { "16": "images/icon16.png", "48": "images/icon48.png", "128": "images/icon128.png" } }, "permissions": ["tabs", "storage", "contextMenus"], "options_page": "options.html", "icons": { "16": "images/icon16.png", "48": "images/icon48.png", "128": "images/icon128.png" }, "web_accessible_resources": [ { "resources": ["_locales/*/messages.json"], "matches": ["https://*/*"], "use_dynamic_url": false } ]} Read more