Data Attribute Highlighter is a Chrome extension designed specifically for developers and QA testers. This tool allows users to highlight HTML elements with specific data attributes simply by hovering over them. Key features include smart hover detection, which automatically identifies elements with the specified attributes, and beautifully designed tooltips that display attribute names and values. Users can configure the extension to work with various data attributes such as data-testid, data-cy, and data-qa, making it versatile for different testing frameworks.

The extension also offers a convenient copy feature, enabling users to copy attribute values to the clipboard with a simple key combination. Its intelligent DOM tree search capability allows for easy navigation through parent elements, ensuring that data attributes can be inspected efficiently. With a modern user interface and smooth animations, Data Attribute Highlighter enhances the development and debugging process without disrupting regular page interactions.