If you allow sites to use plug-ins and Google Chrome detects that you're missing a plug-in for a particular page, it'll prompt you to install the plug-in at the top of webpage.

Click Install plug-in in the message. Some plug-ins begin the installation process by downloading a set-up file to your computer. For those plug-ins, make sure you confirm the download by clicking Save in the downloads bar that appears at the bottom of your browser window. Once the download has finished, restart Google Chrome by closing all open windows to complete the installation process.

Plug-ins not working? See troubleshooting information

All plug-ins are allowed by default (unless Google Chrome detects that they're outdated). Use the Content Settings dialog to block specific plug-ins. Follow these steps:

1. Click the wrench icon on the browser toolbar.
2. Select Options (Preferences on Mac and Linux; Settings on Chrome OS).
3. Click the Under the Hood tab.
4. Click Content settings in the "Privacy" section.
5. In the "Plug-ins" section, select "Block all." You can customize permissions for specific websites by clicking Manage exceptions.

Using a Chromebook at work or school? Your network administrator might manage plug-ins for you, in which case you can't change this setting yourself. Learn about using a managed Chromebook

If you have chosen not to allow plug-ins, you’ll see a icon in the address bar whenever plug-ins have been blocked on a page. To adjust plug-in settings for the site, click the icon:

• To always allow plug-ins for the site, click Always allow plug-ins in the menu that appears, then click Done. An exception will be added for the site.
• To allow plug-ins on the site for just this one time, click Run all plug-ins this time.
• To manage your plug-in settings for the browser, click Manage plug-in blocking.

Outdated plug-ins are blocked by default. You'll see a message at the top of the page whenever the browser has blocked outdated plug-ins on the page. Click Run this time in the message to let the outdated plug-in run (not recommended).

A gray box appears on the page where a plug-in has been blocked.

You can also completely disable specific plug-ins. Unlike blocked plug-ins, you won’t be able to allow the plug-in to run on a given page. When you visit a page with a disabled plug-in, you’ll see the message “Missing plug-in” appear in its place.

To disable plug-ins, visit the Plug-ins page at chrome://plugins/. Find the plug-in you’d like to disable and click Disable. You can also re-enable disabled plug-ins on this page.

You can also reach the Plug-ins page by clicking Disable individual plug-ins in the "Plug-ins" section of the Content Settings dialog.