If I posted a photo on a friend's timeline, who is not a mutual to my other friends.
Who can see this post?
My friends and their friends or their friends only .
Facebook – Who can see what I post on a friend’s timeline
facebook-timeline
Related Solutions
Go to your activity log, filter by Your Posts and select delete
Or go to see friendship,
http://www.facebook.com/YOUR_USERNAME_OR_ID?and=FRIEND_USERNAME_OR_ID
And see if the message is there, click the timestamp you should arrive at
http://www.facebook.com/FRIEND_USERNAME_OR_ID/posts/POST_ID and delete the post
If the above fails use this form http://www.facebook.com/help/contact/?id=144040449046092 it's the opposite of what's happening but I don't see why it wouldn't be using the same or around the same feature internally
No. Your privacy settings apply even to customized URLs for your Facebook profile.
There is always going to be some public information provided when people visit your profile page (Profile pic, basic info unless hidden). If you'd like to see what the public sees when visiting your profile, go to the Settings gear box on your Timeline and select "View as..."
The default view will show you how you appear to the public, as well as provide a box for you to see how your various friends see your profile as well.
Best Answer
If you post directly on their timeline, they control the privacy setting. They have just one setting for all posts that others post on their timeline. If they have it set to Friends, then only their friends will be able to see it. If they have it set to Friends of Friends or Public then your friends (and all other friends of friends) will be able to see it as well.
You can check the privacy icon on other posts from others on their Timeline to see how they have it set, since there is only one setting for all posts from others. However, keep in mind that they could change the setting at any time and that will affect existing posts.
An alternative is to post on your own timeline and tag them. This will give you more control over the privacy setting. If you post to your friends then you can choose whether to make it visible to the friends of anyone that is tagged as well (in the Custom dialog), and can exclude some of your friends if you don't want all of your friends to see it.