How exactly does Adobe Flash work in Safari on macOS Sierra? Read our guide to find out.

macOS Sierra is upon us, and with it comes a new version of Safari. Along with new features like Apple Pay, Safari 10 in Sierra will treat Flash — along with other so-called "legacy plug-ins" — a bit differently than it has in the past.

For one thing, Flash is off by default.

How Flash works in Safari on macOS Sierra

In macOS Sierra, Adobe's Flash plug-in will be turned off in Safari by default to encourage users — and websites — to use HTML5 for features like video. This is because Flash is easily exploitable, and if someone with nefarious intentions hacks the plug-in or the site, Apple previously couldn't prevent users from being exposed. That's changed with Safari on macOS Sierra.

Flash permission

However, there are some sites and services, such as Hulu, Spotify, and Pandora, that require the use of Flash for video playback, music streaming, and more. When you visit one of these sites in Safari, by default you'll see either a black screen with a button saying Click to use Flash or the website will encourage you to download Flash. If Flash is installed, when you click the link to download, you'll be presented with a dialogue box asking if you want to use Flash on the current site just once, or every time you visit. Clicking either will allow you to watch the video as you normally would.

In addition to these new Flash permissions, you can also control these settings on a more granular basis in Safari's Security settings. Here's how.

How to manage Adobe Flash in Safari

  1. Open Safari.
  2. Click on Safari in the Menu bar and select Preferences.
  3. Click the Security tab.

    Open Preference, go to Security

  4. Select Plug-in Settings.

  5. Click the box next to Adobe Flash Player to activate the plug-in.

    Open Plug-in Settings, check Adobe Flash

  6. Use the drop-down next to your currently open websites to select whether those sites should use Flash, leave it off, or ask to use it when you visit them.

  7. Under When visiting other websites, choose whether all websites sites should use Flash, leave it off, or ask to use it when you visit them.

    Manage settings for each site

  8. Hit Done.

    Hit Done


Want to know more about how Flash and Safari operate in macOS Sierra? Let us know below.