Databricks Highlighter is a free Chrome extension developed by Markus that enhances the functionality of Databricks notebooks. This extension allows users to highlight selected text in Databricks notebooks, making it easier to identify variables and their definitions.

With Databricks Highlighter, users can simply click on variables to see other instances of the same variable name highlighted within the notebook. This feature helps users quickly navigate through their code and understand the scope and usage of variables. Additionally, hovering over variables provides users with instant access to their definitions, further enhancing code comprehension.

The extension seamlessly integrates into the Databricks notebook interface, allowing users to toggle the highlighting and definition features on and off with a simple right-click using the context menu. This provides users with flexibility and control over the extension's functionality.

Overall, Databricks Highlighter is a valuable tool for anyone working with Databricks notebooks. Its ability to highlight variables and provide instant access to their definitions enhances code readability and comprehension, ultimately improving productivity and efficiency.