Ideally Facebook has the best privacy setting options, but it seems there are somethings you just cant hide. Unfortunately your friends list is among them which appears hidden (while privacy option friends list is ON) but actually isn’t.
Facebook allows you to set the visibility of your friends list to ‘public’, ‘friends’ and ‘only me’. So the best possible privacy option you would select is ‘only me’, i.e your friends list is visible only to you. The problem is the people in your friends list and their friends can see the mutual friends between you and them when they arrive on your timeline. Now here is the catch, any person on Facebook having at least one mutual friend with you, may be able to see large part of your hidden Friends list along with the mutual friends. You can achieve this by modifying client requests and lot of trial & error attempts. This will take a lot of time.
The Chrome extension called ‘Facebook Friends Mapper’ attempts to do this for you in short time. It leverages the Mutual Friends feature of the social networking site to crawl and expose your hidden Facebook Friends list.
The only condition you must meet is that you should have at-least one mutual friend with the Facebook user, whose ‘friends list’ you want to reveal. Doesn’t matter if you are friends with him or not. ‘Facebook Friends Mapper’ will attempt to reveal maximum portion of the hidden friends list, which is not 100% in most cases.
Just open up ‘Chrome web browser’ if you are not using it right now and install ‘Facebook Friends Mapper’ extension. after installing wait for some time or better restart your browser. Open Facebook users timeline, whose friends you want to reveal and you will see a new option ‘Reveal Friends’ in the Friends tab.
Click on ‘Reveal Friends’ and the Script will start. It will take 5 to 10 minutes depending on the size of friends list and whether you are friends with him or not. I see it is quick if you are friends with the user whose friends you are revealing.
Also see: Facebook profile picture hack!
As you can see above the Script not only reveals friends but also tries to categorize them into ‘regular friends’ and ‘close friends’. Just give it a try and If any problem, feel free to comment below.