Text&JSON Compare is a versatile, privacy-oriented browser add-on designed for developers needing to compare text and JSON data side by side. It features a user-friendly interface with line numbers and synchronized scrolling, making it easy to spot differences. The tool supports a JSON mode that includes syntax highlighting and a Beautify option, along with a text mode that employs an LCS-based diff algorithm. Users can quickly identify changes through color-coded differences, which indicate additions, removals, and modifications. Additionally, a change summary with statistics enhances the comparison process.

This add-on operates entirely offline, ensuring that no data is transmitted beyond the user's browser, which is a significant advantage for privacy-conscious users. With keyboard shortcuts for quick comparisons and a dedicated window for optimal workspace, Text&JSON Compare is ideal for analyzing API responses, configuration files, and any textual content efficiently.