An image filter is a digital tool used to modify or enhance images. It can change the appearance of a photo by adjusting colors, brightness, contrast, and sharpness. Filters can also apply artistic effects, such as blurring or adding textures, to create a specific mood or style. Many photo editing software and applications, like Adobe Photoshop and Instagram, offer a variety of filters for users to choose from. Filters work by altering the pixel values in an image, allowing for creative expression and correction of imperfections. They can be applied to photographs, graphics, and videos, making them versatile tools in digital media. Understanding how to use image filters can significantly improve the quality and impact of visual content.