What file format is typically utilized for Adobe InDesign projects?

The file format commonly utilized for Adobe InDesign projects is INDD. This proprietary format is specifically designed for InDesign, which is a professional desktop publishing software application used for creating layouts for print and digital media, including magazines, brochures, books, and more. The INDD format retains all elements of an InDesign project, such as text, images, and graphical components, ensuring that the design is preserved and editable.

In contrast, the other formats serve different purposes. PSD is the file format used by Adobe Photoshop, primarily for raster graphics and image editing. AI is the format associated with Adobe Illustrator, which is focused on vector graphics. JPG is a widely used format for images that compresses quality for ease of storage and web usability, but it does not retain the design elements like text or layers that InDesign requires for comprehensive project work. Therefore, INDD is the most appropriate format for managing complex layouts in InDesign.