{"mdn_url":"https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/content_scripts","source_file":"webextensions/manifest/content_scripts.json","support":{"chrome":{"notes":"Content scripts are not applied to tabs already open when the extension is loaded.","version_added":true},"edge":{"version_added":"14"},"firefox":{"version_added":"48"},"firefox_android":{"version_added":"48"},"opera":{"notes":"Content scripts are not applied to tabs already open when the extension is loaded.","version_added":true},"safari":{"notes":"Content scripts are not applied to tabs until the user grants permission via the extension's access popover in the toolbar.","version_added":"14"},"safari_ios":{"notes":"Content scripts are not applied to tabs until the user grants permission via the extension's access alert.","version_added":"15"}}}