Workbench Extension is a free Chrome add-on developed by Baptiste BIEBER. It is designed to enhance the Salesforce Workbench application by adding new functionalities and improving the user experience.

With Workbench Extension, users can resize the window, making it easier to view and interact with the application. The Query page now includes a checkbox for fields selection, allowing users to quickly choose the desired fields for their queries. Additionally, users can paste a request and click "Refresh" to automatically fill the query form. The Query page also includes a searching filter for easier navigation. Another useful feature is the ability to download the displayed query result in both JSON and CSV formats.

The Execute page now allows users to save scripts, making it convenient to load and execute them later.

Overall, Workbench Extension is a valuable addition to the Salesforce Workbench application, providing users with enhanced functionalities and improved usability.