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An icon is a small graphic on a computer screen that represents an application, file, folder, or function. By clicking or tapping an icon, a user can initiate an action, such as opening a program or a document. Icons are a key component of a graphical user interface (GUI), making it easier for users to navigate and interact with a computer system visually instead of through text-based commands.

Key characteristics of icons

Visual representation: Icons are small pictures that visually represent an object or action. For example, a picture of a file cabinet might represent a "file" or a trash can could represent a place to "delete" items.

Interactive: They are interactive elements that users can select with a mouse or touch to perform a function.

Accessibility: Icons often have associated "alt text" to describe their function for users who are using screen readers or when images fail to load.

Scalability: Icons are often designed to be displayed in multiple sizes (e.g., on the desktop vs. the taskbar) to ensure they are clear at different resolutions and display locations.