[facebook] What are App Domains in Facebook Apps?

I want to add the ability to 'login with Facebook' to my site. But I am confused when I register my site in Facebook Apps. What should I input into App Domains?

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To add to the answers above, the App Domain is required for security reasons. For example, your app has been sending the browser to "www.example.com/PAGE_NAME_HERE", but suddenly a third party application (or something else) sends the user to "www.supposedlymaliciouswebsite.com/PAGE_HERE", then a 191 error is thrown saying that this wasn't part of the app domains you listed in your Facebook application settings.


In this example:

http://www.example.com:80/somepage?parameter1="hello"&parameter2="world"

the bold part is the Domainname. 80 is rarely included. I post it since many people may wonder if 3000 or some other port is part of the domain if their not staging their app for production yet. Normally you don't specify it since 80 is the default, but if you just want to specify localhost just do it without the port number, it works just as fine. The adress, though, should be http://localhost:3000 (if you have it on that port).


I think it is the domain that you run your app.

For example, your canvas URL is facebook.yourdomain.com, you should give App domain as .yourdomain.com


If you don't specify the platform for the app you won't able to add app domain correctly.

Here is an example -- validate that its a type a website platform. enter image description here


It's simply the domain that your "facebook" application (wich means application visible on facebook but hosted on the website www.xyz.com) will be hosted. So you can put App Domain = www.xyz.com


it stands for your website where your app is running on. like you have made an app www.xyz.pqr then you will type this www.xyz.pqr in App domain the site where your app is running on should be secure and valid