Issuu is a digital publishing platform that allows users to create, share, and discover online publications. It supports various formats, including magazines, catalogs, and brochures, making it easy for individuals and businesses to showcase their content to a global audience. Users can upload their documents in PDF format, and Issuu converts them into interactive publications that can be viewed on any device. The platform also offers tools for analytics, enabling publishers to track engagement and reach, enhancing their ability to connect with readers effectively.