In Facebook login plugin, user's image is not get full size. I have small fix for that.
Open this file: qa-facebook-login.php
1. Find and insert more field to get: username
$user=$facebook->api('/me?fields=email...
To like this:
$user=$facebook->api('/me?fields=email,username...
2. Find and replaces this lines:
'avatar' => strlen(@$user['picture']['data']['url']) ? qa_retrieve_url($user['picture']['data']['url']) : null,
To:
'avatar' => qa_retrieve_url('https://graph.facebook.com/'.@$user['username'].'/picture?type=large')
You can change type of image size:
square --> 50px x 50px
small --> 50px x variable height
normal --> 100px x variable height
large --> max size with 200px x variable height
Done!