Spline is a browser-based 3D design and collaboration platform that lets designers and teams create interactive, production-ready 3D experiences without specialized 3D-modeling expertise. It brings a familiar, real-time design interface to the web, so users can model, texture, animate, and add interactivity, then embed the results directly into websites and apps.
The tool includes 3D modeling primitives, layer-based materials with a prebuilt library, an animation timeline, physics and particle systems, and interactivity through events, states, and game controls. Beyond 3D, Spline has expanded into broader design with features such as Hana, a web-based canvas for interactive 2D work, plus vector networks, visual effects (shadows, blurs, glass), and an infinite canvas with frames and auto layout. Real-time collaboration, comments, and sharing let teams work together in the browser with no downloads.
Spline incorporates AI features, including AI 3D generation that supports text-to-3D creation and AI-powered texturing and styling, lowering the effort to produce 3D assets and scenes. Created experiences can ship across web, iOS, and Android, with integrations for tools and frameworks including Webflow, Framer, React, and Next.js, making it practical to add interactive 3D to real production sites.
Spline serves designers, creative teams, agencies, and product teams that want to incorporate interactive 3D into websites and digital products without heavy developer involvement, and it has become widely used in the web-design community for hero scenes and interactive landing-page elements.