Image tile mode is a design technique that forms a mosaic by duplicating images, keeping their aspect ratio intact. The images are arranged both horizontally and vertically to fill a container, creating a continuous pattern.

This is particularly effective when employing a repeating pattern for backgrounds, such as website themes or decorative elements in an interface. The tiling ensures that the pattern repeats seamlessly across the available space, maintaining visual harmony without any distortion or cropping.

It's a clever method that offers aesthetic consistency, enhancing the overall experience for users, without requiring complex adjustments to individual image files.