GLTF Model Viewer

About this format

GLTF (Graphics Language Transmission Format) is the open standard for 3D on the web. A .gltf file is a JSON document that references geometry, animations, and textures stored in sibling .bin and image files. GLBKit renders .gltf files in the browser, so you can inspect the editable source of a glTF asset before you bake it into a single .glb for delivery.

What is a .gltf file?

.gltf is the text form of glTF 2.0. The main file is JSON that describes the scene graph, meshes, materials, skins, and animations. It points to a .bin file for raw geometry buffers and to image files for textures.

Because the data is split across files, .gltf is ideal for editing and source control. The compiled, single-file equivalent is .glb.

• JSON-based scene description
• References a .bin file for buffers and image files for textures
• Open glTF 2.0 standard maintained by the Khronos Group
• Preferred for editable source assets; .glb is preferred for delivery

Common uses for GLTF files

GLTF is used wherever real-time 3D appears on the web. It is the lingua franca for 3D on the open web, in AR, and across game engines.

• Web 3D, AR try-on, and product configurators
• Game asset import and export (Unity, Unreal, Godot, three.js)
• Marketing demos, virtual production, and training
• Source assets that get baked into .glb for production

How GLBKit renders .gltf files

Drop a .gltf file into GLBKit. The viewer parses the JSON, fetches the .bin and texture files you select, and renders the scene with WebGL. For a single-file experience, convert the .gltf to .glb and use the GLB viewer.

• Drop the .gltf file to start; select the .bin and textures from the same folder, or drop them together in a ZIP
• Orbit, pan, and zoom with mouse, touch, or pen
• Full PBR material and texture rendering
• No upload, no signup, fully local processing

GLBKit capabilities for .gltf

GLBKit is a viewer, not an editor. Use it to verify geometry, materials, and textures before you ship. Animation clips and morph targets in the file are listed in the analyzer panel rather than played back in the viewport.

• PBR material and texture rendering
• Animation clip and morph-target reporting via the analyzer panel
• Wireframe, grid, axes, and bounding-box overlays
• Preset camera views, camera reset, and auto-rotate
• Process files locally in the browser - nothing is uploaded

Tips for opening GLTF files

.gltf references external .bin and textures, so loading order matters.

• Upload the .gltf with its .bin and texture files together, or use a ZIP archive
• Keep relative paths intact as they appear in the .gltf
• If textures are missing, check for broken paths or missing files

Who uses GLBKit for .gltf files

GLBKit for .gltf is for anyone who needs to confirm that an exported glTF asset looks right before it is converted to .glb or pushed to a runtime.

• 3D artists validating glTF exports from DCC tools
• Web and game developers debugging asset pipelines
• QA teams checking geometry and textures before runtime delivery
• Educators and students learning the glTF format

How to Open GLTF Files Online

Learn how to open, view, and inspect GLTF 3D scenes online using the GLBKit GLTF Model Viewer.

1. Upload your GLTF fileDrag and drop your .gltf file into the viewer or select it from your device. Include the required GLTF resources such as binary and texture files when needed.
2. Load the GLTF sceneGLBKit loads the GLTF scene and its available resources directly in your browser without requiring desktop software.
3. Navigate the 3D sceneRotate, zoom, and pan the camera to explore the GLTF model and inspect different parts of the scene.
4. Inspect GLTF resourcesReview supported scene components including meshes, materials, textures, and the animation clips the file contains.
5. Preview the GLTF modelUse the browser-based viewer to check your GLTF asset before using it in a website, application, or other 3D workflow.