What is the purpose of sparklines in Excel?

The purpose of sparklines in Excel is to represent data trends in a compact, simple graph. Sparklines are miniature charts that fit within a single cell, allowing users to visualize trends and patterns in data at a glance without taking up a lot of space. They are particularly useful for providing a visual summary of data over time or across categories, helping users quickly identify important trends or outliers in their data. This compact representation makes it easier to incorporate visual insights into reports or dashboards while maintaining focus on the data itself.