Products Web Progressive Web Apps Training Using Workbox Workbox is a collection of libraries and build tools that make it easy to store your website’s files locally, on your users’ devices. View slides on Google Docs Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated March 8, 2018.