How to Add a Reading Progress Bar in WordPress: A Quick Guide
It’s a simple idea, but one that several websites use with positive results. Best of all, you can implement a reading progress bar with zero cost and minimal effort on your part – just install a reading progress bar plugin, play around with one or two settings, then you’re good to go. Today, I’m going to show you how to setup the free Reading Position Indicator plugin, plus I’ll introduce you to several alternative plugins for the job.
Sorry but this plugin doesn’t supports network/multisite installation in it’s free/public version.
It will be fixed on version 2.0. Contact me if you want to help or ask for more informations.