About column formatting
Improve the display of columns in SharePoint lists with formatting. The column-formatting text describes the elements that are displayed and their display style. The data in the column doesn't change.
Anyone who can create and manage views in a list can access column formatting from the column settings.
Note: Some functionality is introduced gradually to organizations that have opted in to the First Release program. If you're not enrolled in the First Release program, you may not see this feature.
Column formatting example
Here is a standard list view, without formatting:
With formatting, a colored bar shows size, a mail link is added, and status is indicated with colors and icons:
Column formatting is applied using a text format called JSON. However, you don't have to know everything about JSON to format columns.
To get started: