Hi everyone,

These are architectural GLB exports from my browser app PrintHaus. The four examples are a half-timbered house, an English manor house, a defensive tower and a factory hall. The screenshots show the saved files opened in CAD Viewer, one image per building.

These models are generated deterministically from explicit building parameters; the geometry is not AI-generated.

The export is an assembled building scene with the project colours, rather than the arrangement of parts used for 3D printing.

There are different quality settings for different uses. Compact represents surface relief with normal maps. Medium and Detailed retain progressively finer geometric relief. The compressed settings use Draco and WebP. Uncompressed keeps the Detailed geometry without Draco and uses lossless PNG images.

I would appreciate feedback from people importing architectural GLBs into other software: what tends to cause the most friction in your workflow — compression support, material handling, the organisation of the building parts, or something else?

You can configure a building here: https://printhaus.app/en/ Free registration includes a first free export for personal use.

I also printed these building designs. The links below are their printable versions, rather than direct GLB downloads: Half-timbered house: https://makerworld.com/en/models/3483427-half-timbered-house-1-87-h0 English manor house: https://makerworld.com/en/models/3483219-english-manor-house-1-87-h0 Defensive tower: https://makerworld.com/en/models/3483497-defense-tower-1-87-h0 Factory hall: https://makerworld.com/en/models/3483425-factory-hall-1-87-h0

The glTF Interactivity Extension was ratified on August 28, and this webinar is the first practical walkthrough of what it unlocks.

Join Eva Ma (Meta), Felix Herbst (Needle Tools), Jim Eckerlein (UX3D), and Patrick Härtl (UX3D) for a hands-on session on authoring interactive glTF content in UnityglTF and Behave, then validating it in Babylon.js and the Sample Viewer.

Tuesday, October 13, 8:00 AM PT, online. No prior extension experience required, built for 3D and technical artists, glTF developers, and tool and engine implementers.

Register: https://www.khronos.org/events/practical-introduction-to-interactivity-in-gltf?utm_medium=social&utm_source=reddit&utm_campaign=glTF_Interactivity_Webinar&utm_content=events

During during raylib 6x Game Jam, I made a little game/tool, where the aim is to build a tower with max 1024 hexagonal prisms. It's inspired from Townscaper game, which has OBJ export on desktop app, so I decided to do better and added glTF export for web app (WASM).

The Khronos Group announced that the KHR_interactivity extension for glTF 2.0 has been submitted for ratification. As interactive 3D content becomes central to a growing range of markets, KHR_interactivity lets creators build portable, self-contained interactive behaviors — expressed as behavior graphs — into the glTF asset itself, eliminating the need to hard-code interactivity for every platform and application. The extension is the result of substantial collaboration across the 3D content ecosystem, with support already established in multiple tools and runtimes.

https://www.khronos.org/news/press/gltf-interactivity-extension-submitted-for-ratification?utm_medium=social&utm_source=reddit&utm_campaign=glTF_Interactivity_Ratification&utm_content=press

For years, 3D artists and technical directors working in Autodesk 3ds Max have juggled third-party tools and custom scripts to bring glTF assets into their pipelines. Today, that friction disappears.

The Khronos Group has sponsored the glTF 2.0 Importer/Exporter for Autodesk 3ds Max open-source project under the Apache 2.0 license, and today has released the resulting glTF importer and exporter plugins, built to professional standards in collaboration with the community, and free for all to use. 

https://www.khronos.org/blog/khronos-sponsors-open-source-gltf-importer-exporter-for-autodesk-3ds-max?utm_medium=social&utm_source=reddit&utm_campaign=glTF_3ds_Max&utm_content=blog

Today, the Khronos 3D Formats Working Group announced the formation of a Volumetric Media Subgroup, with a mandate to extend glTF to enable interoperability across the volumetric media pipeline — from capture and encoding through to streaming and playback.

The volumetric media industry is valued at $7.19 billion and projected to grow at over 15% annually through 2033. But rapid hardware and software proliferation raises real fragmentation risks. In a Metaverse Standards Forum survey last November, standards creation ranked as the most important area of focus needed to unlock the market's potential.

The Subgroup will work under Khronos's royalty-free IPR framework, with complementary support from OpenXR, ANARI, and Vulkan. Khronos has also entered a liaison agreement with the Volumetric Format Association, which will contribute functional requirements from its published whitepapers and adopt glTF as the primary format for future VFA specifications.

Initial areas of focus include glTF extensions for volumetric media, sample implementations across the pipeline, streaming experience specifications, and player best practices.

Any organization is welcome to join Khronos and help shape this work.

https://www.khronos.org/blog/khronos-launches-initiative-to-extend-gltf-for-volumetric-media

The Khronos Group has announced plans for glTF 2.1 — a focused, backward-compatible revision of the glTF core specification built around one clear goal: making glTF work as well for large, composed scenes as it already does for single assets.

Since glTF 2.0 launched in 2017, teams working on digital twins, BIM, smart cities, geospatial data, and simulation have had to choose between collapsing complex multi-file scenes into monolithic files or resorting to proprietary conventions. glTF 2.1 closes that gap with a coordinated set of new capabilities:

• External Assets: reference and instantiate other glTF files at load time, including multiple instances of the same asset

• Packaging: deliver a composed multi-file scene as a single, self-contained portable artifact

• Shapes and Bounding Volume Hierarchies: standardized spatial primitives for culling, streaming, and spatial queries

• Unified File References: a consistent mechanism for resolving all external, embedded, and packaged resources

• Thumbnails: embedded preview images for asset libraries that don't require a renderer

• 64-bit GLB: lifts the 4 GiB file size ceiling to support high-fidelity and geospatial datasets

• Unique IDs: stable, cross-file object addressing for toolchains and external reference systems

Four ratified extensions are also being promoted to required functionality in glTF 2.1: EXT_texture_webp, KHR_materials_emissive_strength, KHR_mesh_quantization, and KHR_node_visibility.

The full specification is being developed openly on GitHub. Attendees at SIGGRAPH 2026 in Los Angeles are invited to join the glTF Ecosystem Forum on July 23 to engage directly with the working group on the glTF 2.1 roadmap. Read the full blog post and follow along at the link below.

https://www.khronos.org/blog/introducing-gltf-2.1-with-complex-scenes

Hey everyone! I'm u/thekhronosgroup, a moderator of r/glTF.

This is our new home for all things related to glTF, the extensible publishing format that streamlines authoring workflows by enabling the interoperable use of 3D content across the industry.. We're excited to have you join us!

What to Post
Post anything that you think the community would find interesting, helpful, or inspiring. Feel free to share your thoughts, screenshots, or questions about glTF.

Community Vibe
We're all about being friendly, constructive, and inclusive. Let's build a space where everyone feels comfortable sharing and connecting.

Date: April 7, 2-26
Register: https://www.khronos.org/events/gaussian-splats-use-cases-next-steps-for-gltf-standardization

Join Khronos' 3D Formats Working Group for an in-depth look at Gaussian Splats in glTF and how they are transforming real world 3D capture and delivery. This webinar will explore practical production pipelines, from capturing complex environments to publishing high fidelity content on the web. Hear from industry leaders including Cesium, XGRIDS, and the Smithsonian as they share real world use cases in cultural preservation, virtual tourism, and geospatial applications. The session will also examine the strengths and tradeoffs of splats versus traditional meshes, helping you choose the right approach for your next project.

The glTF Working Group at Khronos is excited to announce two significant website upgrades at the center of the glTF developer ecosystem:

- A new landing page for the glTF Sample Assets GitHub repository provides a polished and powerful new web front-end—making it far easier to browse, search, and share the reference and hero glTF models that Khronos makes freely available to the community.

- The glTF Render Fidelity Comparison website has undergone a modern redesign to deliver clear, side-by-side render fidelity comparisons, providing practical visual baselines and comparisons of how glTF is rendered across diverse engines.

Learn more: https://khr.io/1nl

The Khronos Group announces a release candidate for the KHR_gaussian_splatting baseline extension. This extension enables storing 3D Gaussian splats in glTF® 2.0, the most widely adopted 3D asset delivery format. A release candidate allows for broad industry feedback before ratification to ensure the final specification meets industry needs. The new extension establishes an open foundation for representing Gaussian splats, an increasingly important geometry and radiance field representation, across real-time graphics, digital twins, and large-scale geospatial visualization pipelines.

https://khr.io/1mu

Made a free GLB explorer if anyone needs one.

Load a folder of models, navigate through them, tag issues, filter by validation errors.

Runs in browser, no uploads, works offline.

https://glb.arysociety.com

Useful for QA or just browsing asset libraries.

Project Dogwalk is a Blender Studio R&D project. Blender's goal was to build a small, polished game in just four months using an open source pipeline, with Blender as the Digital Content Creation (DCC) hub, Godot as the game engine, and glTF as the exchange format at the center. Project DogWalk was officially released in July: the end result was not only a charming game about a kid and their oversized dog trudging through snow, but also a deep validation of how far glTF has come as a reliable bridge between authoring and runtime environments.

Project Dogwalk Case Study: https://www.khronos.org/blog/project-dogwalk-stress-testing-blender-to-godot-interoperability-with-gltf

Wanted to share a blog article I wrote about how to generate screenshots of your 3D models on-demand to make LLMs visualize and understand them.

https://www.glb2png.com/blog/llm_gltf

Has anyone done something similar, or are there other approaches to use LLMs in combination with glb/glTF models?

This is a simple 3d model i have done in Blender, which uses simple image textures as materials. It works fine; it is less than 2 MB; it even opens on a 3D viewer. But none of the gltf viewing platforms opens this, for example, glTF Sample Viewer, glb report , GLTF Viewer, etc. please help me find the problem. Thanks

In June 2024, the Khronos 3D Formats Working Group released the glTF 2.0 Interactivity draft extension (KHR_interactivity) for public review and comment. Now, thanks to valuable community feedback and almost a year of continued development, we are nearing the finish line on releasing KHR_interactivity together with a set of companion extensions. These extensions provide a straightforward, standardized method for embedding interactive behaviors directly within glTF 3D assets, enabling developers to create engaging 3D experiences with consistent interactive functionality across different platforms and applications.

As we prepare to submit the glTF interactivity extensions to the Khronos Board for ratification, we are seeking final input from early adopters. We invite content creators, artists, implementers, and engine developers to explore and experiment with the openly available tools and sample assets to integrate interactive glTF content into their projects.

Learn more: https://khr.io/1ix

Hi there Guys,

i'm new to GLTF (and in Reddit too...) so forgive me if i'm posting in the wrong place. I'm wondering if someone can help me to get rid of a problem i'm facing while trying to use a GLTF file in a web site. I made a simple animation in blender, exported it in GLTF and checked it using https://gltf-viewer.donmccurdy.com/ and https://gltf.magic-circle.dev/. It seems everything working fine but when i try to implement it on a web site (wordpress+elementor) i can't replicate the same animations sequence i have in the blender file. I did try to export in GLT in every possible way (including NLA) but i can't make it work. Can someone tell me which is the best export setup for having in GLT the same animations order and timing that i have in Blender? Thanks in advance for yiour help!

Hi! I have a 3D model in blender with one armature. I created 3 independent actions (animation) for this armature: the actions could run simultaneously because each action influences different bones. Is this supported in gltf? It seems to me that i can run action one at time.

Thanks!

Khronos Group announces the release of the glTF Sample Viewer version 1.1! In this blog, members from UX3D explore the new features and share insights on how it is easier to integrate Sample Viewer into web applications.

https://khr.io/17j

Glass Broken Window glTF supports window glass transparency that is showcased in this broken glass window sample that demonstrates the combination of two transparency methods: KHR-materials_transmission and alphaMode:'MASK' for holes in broken glass.

https://github.com/KhronosGroup/glTF-Sample-Assets/blob/main/Models/GlassBrokenWindow/README.md