The GP Back To Top WordPress Plugin allows you to create Back To Top custom for the your website.
You will need Phing and Git installed to build from source.
To complete the following steps, you will need to open a command line terminal.
Clone the Github repository:
git clone https://github.com/giangmd/gp-back-to-top.git
From within the checked out repository, run:
phing package
The packaged zip file will be available under the build directory which is created under your locally cloned git repository.
https://wordpress.org/plugins/gp-back-to-top/#installation
The GP Back To Top Wordpress plugin is licensed under the terms of the MIT License and is available for free. See LICENSE.