Sheets Row Highlighter is a Firefox extension designed for web development that enhances spreadsheet usability by allowing users to highlight entire rows and columns based on the currently selected cell. This tool is particularly useful for those managing large datasets, as it ensures that relevant data stands out visually, improving readability and efficiency. Users can customize highlight colors and opacity to suit their preferences, making it easier to differentiate between various data points.

The extension also supports keyboard shortcuts for quickly toggling highlights, streamlining the workflow for users who frequently interact with spreadsheets. Additionally, it automatically saves and applies highlight settings on a per-sheet basis, ensuring that users maintain a consistent visual layout across different sessions. This functionality is particularly beneficial for ongoing projects or collaborative work, where different sheets may require distinct highlight settings.