Royal PrettyPhoto is another easy way to automatically add lightbox effect in WordPress posts & pages. The plugin is compatible and tested on popular web browsers like Firefox 3.0+, Google Chrome 10.0+, IE 6.0+, Safari 3.1.1+, Opera 9+ etc
Installation & Usage: Simply install and activate Royal PrettyPhoto then visit your admin area Dashboard -> Settings -> Royal PrettyPhoto page and set the options. Here you can select a font, hide photo title, choose text color, Hide Photo Control, Hide Social Icons, Hide Photo Thumbnial etc.
NOTE: The plugin requires the WP_footer() hook to be fired from your theme.