If a plug-in is missing in Safari on Mac
Use these tips to make sure you get the correct versions of plug-ins.
Important: Safari supports the plug-in for Adobe Flash Player but no longer supports most other plug-ins.
Look for a placeholder on the page, such as “Plug-in missing” or “Click to use [Plug-in]”: Click the placeholder, then follow the onscreen instructions. To change plug-in blocking, choose Safari > Preferences, click Websites, click the plug-in, then choose from the pop-up menu for the website. For more information about plug-in settings, see Safari Websites preferences on Mac.
Look for a link to install the plug-in: Click the link to install the plug-in. If the plug-in is already installed, Safari will offer to turn it on for this website. You can turn it on for just this visit, or for all visits to the website.
Check the webpage for a recommendation: Websites often recommend the appropriate plug-in. If you can’t find a recommendation, contact the website’s owner.
View a list of your installed plug-ins: In Safari, choose Help > Installed Plug-ins.