A slicer in Excel is a tool that allows you to filter data in tables or PivotTables with ease. It provides buttons that you can click to filter tables or PivotTables, and it also indicates the current filtering state, making it easy to understand what data is being displayed. A slicer typically displays the following components:

• A slicer header that indicates the category of the items in the slicer.
• A filtering button that is not selected indicates that the item is not included in the filter.
• A filtering button that is selected indicates that the item is included in the filter.
• A Clear Filter button removes the filter by selecting all items in the slicer.
• A scroll bar enables scrolling when there are more items than are currently visible in the slicer.
• Border moving and resizing controls allow you to change the size and location of the slicer.

Slicers are widely used for creating dashboards that display the summary report of the table. They are implemented along with Excel tables and PivotTables to act as one-click software filters to filter out the required information from an enormous collection of data within a fraction of seconds. You can use a slicer to filter data in a table or PivotTable by clicking anywhere in the table or PivotTable, selecting the Insert tab, and then selecting Slicer. In the Insert Slicers dialog box, you can select the check boxes for the fields you want to display and then select OK.