Diff Anything is a free browser add-on designed to facilitate the comparison of text, JSON, or selected content across web pages directly from Chrome. This tool allows users to highlight content on any website and save it as Diff A or Diff B, enabling an instant side-by-side or unified view of differences. It is particularly useful for developers, writers, and anyone needing to track changes in various formats such as API responses, documentation, and content edits.

The add-on comes equipped with features like pretty-print and auto-detection for JSON, an option to ignore whitespace, and the ability to export results in Markdown format. Furthermore, Diff Anything operates entirely locally within the browser, ensuring no accounts, cloud sync, or data collection is required. This makes it a secure and user-friendly option for anyone needing to compare text efficiently.