Here is my manifest since the link doesn't seem to work : { "name" : "Youa", "version" : "1.0.6", "omnibox": { "keyword": "youa" }, "description" : "Ajouter Youa à Opera", "manifest_version" : 2, "homepage_url" : "https://www.youa.eu/", "omnibox": { "keyword" : "youa" }, "background": { "scripts": ["background.js"], "persistent": false }, "content_scripts" : [{ "matches" : ["https://www.youa.eu/*"], "js" : ["content.js"] }], "browser_action": { "default_icon": "logo_16.png", "default_title": "Youa" }, "permissions": [ "https://www.youa.eu/youa.php" ], "chrome_settings_overrides" : { "search_provider" : { "name" : "Youa", "search_url" : "https://www.youa.eu/search.php?q={searchTerms}", "favicon_url" : "https://www.youa.eu/asset/img/logo-responsable.jpg", "is_default" : true, "encoding" : "UTF-8", "keyword" : "youa" }, "homepage" : "https://www.youa.eu", "startup_pages" : ["https://www.youa.eu"] } } LM