The historic Maison de la Chimie in Paris recently served as the epicenter for the global web development and interactive design communities, hosting the inaugural Three.js Conference. Organized to unite a fragmented yet vibrant ecosystem of creators, software engineers, technical artists, and digital designers, the two-day summit marked a significant turning point for the open-source library that has fundamentally transformed 3D graphics on the web.
Since its inception, Three.js has lowered the barrier of entry for rendering complex, hardware-accelerated 3D graphics in standard web browsers using WebGL, and increasingly, WebGPU. Despite powering millions of immersive web experiences over the past decade and a half, its global community had never assembled for a dedicated, in-person physical conference of this scale. The Paris gathering successfully bridged that gap, offering a rare physical forum for collaboration, technical critique, and future-casting.
Setting the Stage: A Community-Driven Genesis
The foundational vision for the conference was rooted not just in technical lectures, but in holistic environmental and experiential design. Paris-based Hervé Studio spent nearly seven months orchestrating the event’s scenography, physical branding, and overarching art direction. Rather than opting for a sterile corporate convention layout, the organizers prioritized community-centric aesthetics, utilizing custom internal tooling to maintain a cohesive visual identity across physical merchandise, venue architecture, and interactive digital interfaces, including an interactive 3D venue map.
Opening remarks set an energized tone as prominent figures in the WebGL community took the stage. David Ronai delivered the initial welcome, paving the way for Vicente Lucendo, who offered a technical deep dive into the audio-visual craft and architectural engineering behind the acclaimed web experience Messenger. Following Lucendo, Robin Payot captivated the audience by demonstrating how classic retro-gaming nostalgia can be successfully ported to the modern browser, detailing his journey of rebuilding segments of The Legend of Zelda utilizing Three.js and transitioning the rendering pipeline from WebGL to WebGPU.
Pushing Boundaries: Animation, Shaders, and the Evolution of the Web
The morning sessions of Day One quickly established a diverse technical curriculum, balancing low-level shader optimization with high-level user experience design. Cassie Evans, representing GreenSock (GSAP), previewed upcoming animation paradigms in GSAP 4. Her presentation highlighted advanced spring-based animation mechanics and tighter native integrations with Three.js scenes, directly addressing performance bottlenecks often encountered when synchronizing Document Object Model (DOM) elements with hardware-accelerated canvas environments.
Moving from animation to immersive commerce, Daria Nevezhyna critiqued the persistent prevalence of flat, uninspired web interfaces. Through case studies of advanced product configurators, Nevezhyna illustrated how atmospheric lighting, dynamic interaction models, and spatial storytelling can fundamentally redefine digital consumer journeys. Kim Boutin followed with an exploratory retrospective on web conventions, encouraging creators to embrace digital glitches, unconventional UI paradigms, and exploratory design methodologies.
Subsequent technical blocks introduced experimental frameworks pushing the boundaries of browser capabilities. Célia Lopez shared an experiential retrospective on mastering 3D and WebGL through iterative trial and error. Meanwhile, Thomas Nattestad and Natalia Markoborodova introduced cutting-edge developments regarding HTML integration within canvas elements. Utilizing features such as THREE.HTMLTexture, the speakers demonstrated how hybrid interfaces—where traditional DOM structures and complex 3D meshes seamlessly interact—are becoming viable for production environments. Furthermore, Lovis Odin addressed the integration of generative artificial intelligence within professional production pipelines, detailing practical implementations involving Blender scenes, image-to-video workflows, custom LoRAs, and Gaussian splatting.
Rigorous Critique and Rapid-Fire Innovation
A crowd-favorite segment, "Roast My Folio," brought industry veterans Bruno Simon, Cassie Evans, and Nicolas Barrateau together for an unfiltered portfolio review session. The panel established clear, consensus-driven guidelines for aspiring WebGL developers: excessively long loading times, over-reliant fluid simulations, and cluttered textual breakdowns of software stacks routinely undermine a portfolio’s impact. The overarching verdict emphasized decisive art direction, meticulous performance budgeting, and allowing the functional visual work to dictate technical competence.
Momentum carried seamlessly into a high-intensity session featuring ten rapid-fire lightning talks, each capped at two minutes. The sequence showcased a kaleidoscopic array of projects, ranging from AI-assisted 3D generation tools and browser-based lighting utilities by Sketchfab co-founder Cédric Pinson, to real-time keyframe animation tooling presented by Anime.js creator Julian Garnier. Highlighting the philosophical core of the session, Dario Sanchez addressed rendering bottlenecks, noting that technical rendering accuracy alone is insufficient for compelling digital art—ultimately, human perception and aesthetic taste dictate true quality.
The Paradigm Shift: Artificial Intelligence and Higher Levels of Abstraction
A central narrative woven throughout the conference was the accelerating integration of artificial intelligence into creative coding workflows. During a dedicated panel discussion, Three.js creator Mr.doob was joined by Renaud Rohlinger, Nicolas Barrateau, and Florian Zumbrunn to debate how generative tools are altering the psychological relationship developers maintain with code.
Mr.doob expanded on these themes during his keynote address, drawing a historical parallel between the advent of modern AI coding agents and the introduction of anti-aliasing in 1990s computer graphics. Once software automation assumed responsibility for repetitive computational overhead, manual execution became obsolete. Observing children successfully constructing functional 3D games via natural language prompts underscores a fundamental paradigm shift: the entire industry is moving to a higher level of abstraction.
While AI democratizes creation and compresses prototyping cycles from weeks to mere hours, the panel concurred that foundational computer science literacy remains critical. Navigating complex debugging scenarios, optimizing shader performance, and pushing creative boundaries still demand deep technical curiosity.
Implications and Future Outlook
The success of the inaugural Three.js Conference signals a maturing ecosystem. As browser technologies transition toward widespread WebGPU adoption, and as developer toolchains absorb generative AI capabilities without sacrificing deterministic control, the web is increasingly positioned as a first-class engine for interactive entertainment, spatial computing, and brand storytelling.
As Day One concluded in Paris, the prevailing sentiment among attendees was one of collective validation. The conference established that while open-source software is fundamentally distributed across global repositories, the future of spatial web development relies heavily on physical spaces for shared critique, human connection, and artistic inspiration.
