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Those who use Google’s Chrome web browser may have noticed that when you visit certain pages, a small double diamond icon appears in the address bar next to the star icon that allows you to add a bookmark. When you hover your mouse over this icon, a message will appear saying “This page wants to install a service manager. What does that mean exactly?
With Chrome, Web services can ask if they want to use them to open certain links. Although most links usually take you to another page, some links can open programs and perform other actions. For example, mailto: Links can open your mail program and Webcal: Links can add events to your calendar program. These links are called logs, and the programs they use are called handlers. Many web services, including Gmail and Google Calendar, can now be used as managers.
When you click on the double diamond icon, a small box appears in which you can choose between three settings: Use, No and Ignore. By default, the ignore option is set. There is also a link to “Manage handler settings”. This takes you to the Chrome Settings page in the Privacy section and displays all active protocol managers. It is up to you to decide whether or not you use this service manager.
Enable or disable site manager requests in Chrome
If you want to allow Gmail to open all email links,
- Select the Use Gmail radio button. When you click on a hyperlinked email address on a page, the Create Gmail window opens.
- Choose No to save how your computer opens email links as before.
- Choose Ignore to prevent the request from appearing again when you visit Gmail.
You can also use Google Calendar. Its options are similar to those of Gmail, except that you can use Google Calendar to open Webcal links. Service managers in Chrome are enabled by default. You can disable or reactivate them from the Chrome Settings menu. That’s how we do it.
- Select the Chrome menu from the browser toolbar.
- Select Settings
- Display advanced settings.
- In the Privacy section, click Content Settings.
- In the dialog box that appears, you will find the “Handler” section:
- To allow requests, select “Ask sites to become default log managers”.
- To disable queries, select “No website allowed to process logs”.
- If for any reason you want to use a different manager to open a link on a page, right-click on the link and select “Open link with” to select a manager. Your default settings for the manager are not affected.
- To delete the manager, move the mouse over the manager you want to delete.
- Click on Delete this page.
The links that can be used to open a particular application are called protocols and the application to be used is called a manager. Therefore, the message indicates that the application must be configured to work as a manager when the link is clicked. The link opens automatically in the application, rather than in the browser.
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