Gutenslider is a slider block for the WordPress block editor. It lets users create sliders and carousels in posts, pages, and templates without a separate slider interface or shortcodes. Each slide is a container for blocks, so a slider can display images, videos, colors, or gradients with headings, buttons, columns, embeds, and other block content layered over them. Users add the Gutenslider block, choose media from the WordPress Media Library or use video links, then add shared content across slides or distinct content to each slide. The plugin supports slide and fade transitions, autoplay, responsive slide counts, swipe and arrow navigation, and a lightbox for images. Video options include muted loops, YouTube videos and playlists, and linked video files. The free version includes slider creation without a watermark or account; the Pro version adds 3D, shaped, and WebGL effects, vertical sliders, scroll parallax, animated controls, and additional lightbox features. The slider is styled in the block editor, where a preview can run the actual effects and autoplay. Gutenslider uses Swiper and loads its scripts when a slider approaches the screen, with modules selected for the features in use; the lightbox code loads when opened. The site reports that layouts are rendered on the server to reduce layout shifts.