If you distribute legacy extensions built with Safari Extension Builder, we recommend converting them to the new Safari App Extension format, test on the latest version of Safari 13, and submit them to the Mac App Store or notarize them for distribution outside the Mac App Store.

Users on macOS High Sierra or later can easily find extensions on the Mac App Store by choosing Safari Extensions from the Safari menu Exit Preferences and use Safari as usual. Uncheck the box next to Internet plug-ins so that ‘Allow Plug-ins’ is unchecked and turned off. Pull down the Safari menu and choose Preferences. By forcing users to update to the latest Flash version, Safari is reducing many of the problems associated with this ubiquitous plugin. This trojan was installed by masquerading as a Flash Player update. The Safari Extensions Gallery for legacy extensions will no longer be available in September, 2019. Open the Safari app on the Mac if you have not done so already. Most recently Macs had their most public and widespread trojan attack from the Mac Flashback malware. Legacy Safari Extensions (.safariextz files) built with Safari Extension Builder are not supported in Safari 13 on macOS Catalina, macOS Mojave, or macOS High Sierra. Get started with App Store Connect Converting Legacy Safari Extensions Before submitting for review, make sure to read the guidelines for extensions. Apple reviews all extensions and updates to ensure they work reliably. When your Safari Extension is ready to be released, upload it to App Store Connect for distribution on the App Store. The SafariDriver is the link between your tests in Selenium and the Safari Browser. The Extensions category on the Mac App Store showcases Safari extensions, with editorial spotlights and top charts to help users discover and download great extensions from the developer community.

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