This document discusses using Grunt.js to automate WordPress development workflows. Grunt allows automating repetitive tasks like compiling CSS and JavaScript, running linting tools, concatenating and minifying files, generating sprites, deploying code, and live reloading browsers. It uses plugins maintained in GitHub repositories to perform these tasks. The document provides steps to set up a Grunt-based development environment, including installing Node.js, creating a package.json, installing Grunt and plugins, and configuring a Gruntfile. It also discusses options for using Grunt within WordPress themes and plugins or for an entire WordPress site.