Spline: Free 3D Design Tool for Interactive Web Experiences

Spline reimagines what 3D design can look like when it happens entirely in the browser. Rather than juggling heavyweight desktop software, designers, developers, and creative teams can model objects, apply materials, sculpt shapes, and layer in animations directly online—then instantly add interactivity like physics, camera controls, and game-style input. Because collaboration happens in real time, entire teams can co-design a scene simultaneously, the same way they'd work together in a doc or whiteboard tool. What sets Spline apart is its focus on shipping production-ready work fast. Once a 3D scene is built, it can be exported as code, video, image, or embedded directly into a website with a simple snippet—no need to hand off files to a separate development pipeline. With features like Teams & Projects, a template library, and support for spatial content aimed at platforms like visionOS, Spline positions itself as a full workflow: design, iterate, collaborate, and publish, all without leaving the browser. Whether you're a UX designer prototyping an interactive landing page, a game developer testing physics-based interactions, or a marketing team building an immersive product showcase, Spline gives you the tools to go from concept to live 3D experience without switching software.

Start by creating 3D objects using Spline's modeling and sculpting tools, then refine them with material layers, textures, and video textures. Add motion with animation tools and layer in interactivity such as physics, camera controls, and web browser events to make the scene responsive. Invite teammates to collaborate on the same file in real time, organizing work with Teams, Projects, and Folders. When ready, export your creation as an image, video, 3D file, or clean code snippet, and embed it directly into your website or app to bring the design to life.