glTF Extension Prefixes

May 28, 2026 ยท View on GitHub

The following extension prefixes are reserved by the spec maintainers:

  • KHR - Ratified or intended-to-be-ratified by Khronos Group
  • EXT - Prefix for extensions proposed by multiple vendors

To request a prefix, submit a GitHub issue with the name of the requested prefix and the vendor that will be using it. Maintainers, please assign the extension label to the issue.

Registered Vendor Prefixes

PrefixCompany or Project NameContactsRequest
3DVOX3DVOXhttps://3dvox.com/#2583
ADOBEAdobe, Inc.https://adobe.com/#1431
AGIAnalytical Graphics, Inc.https://agi.com/#1405
AGTAugment SAShttps://www.augment.com/#1571
ALCMAlchemisten AGhttps://alchemisten.ag/
viktor.gerbert at alchemisten.ag		#1708
ALIAlibaba Grouphttps://www.alibaba.com/#1160
AMZNAmazonhttps://www.amazon.com/
jasoncan at amazon.com		#1233
ANIMECHAnimech ABhttp://animech.com/#1780
ASOBOAsobo Studiohttps://www.asobostudio.com/#1989
AUDACESAudaces Automacao Industrialhttps://audaces.com/
edward.boszczowski at audaces.com		#2231
AVRAltspaceVR, Inc.https://altvr.com/#1009
BENTLEYBentley Systems, Inc.https://www.bentley.com/
paul.connelly at bentley.com		#2259
BEVYBevy Foundationhttps://bevy.org/#2497
BLENDERBlender Foundationhttps://www.blender.org/#865
C3DCore3D, Inc.https://core3d.io/#2264
CAPTURECapture Visualisation ABhttps://www.capture.se/#1732
CESIUMCesium GS, Inc.https://cesium.com/
CITRUSCitrus Toolboxhttps://github.com/KenzieMac130/CitrusToolbox#1962
CLOCLO Virtual Fashionhttps://www.clo3d.com/#1944
CVTOOLSCanvas Toolshttps://github.com/MackeyK24/CanvasTools#1389
DGGDarmstadt Graphics Group GmbHhttps://dgg3d.com/#2303
DOTVDotVisionhttps://dotvision.com/
guillaume.pelletier at dotvision.com		#2192
EMBARKEmbark Studios ABhttps://www.embark-studios.com/#2097
ENVOKEEnvokehttps://envoke-demos.com/#2363
EPICEpic Games, Inc.https://www.epicgames.com/#1905
ESSILORLUXOTTICALuxottica Group S.p.A.https://www.essilorluxottica.com/#2204
F8Forum8 Co., Ltd.https://www.forum8.com/#1999
FBFacebook, Inc.https://www.facebook.com/#1139
FOXITFoxit Software, Inc.https://foxitsoftware.com/
liqian_mu at foxitsoftware.com		#1712
GODOTGodot Enginehttps://godotengine.org/
ernest.lee at chibifire.com
juan at godotengine.org
contact at godotengine.org		#2240
GOOGLEGoogle, LLChttps://www.google.com/#1123
GRIFFELGriffel Studiohttps://griffelstudio.com/#1861
HEVOLUSHevolus Srlhttps://www.hevolus.it/#2183
ICOSAIcosa Foundationhttps://icosa.foundation/#2208
INTELIntel Corporationhttps://www.intel.com/#2142
KDABThe KDAB Grouphttps://www.kdab.com/#1728
KITTYCADKittyCAD, Inc.https://kittycad.io/
david at kittycad.io		#2344
LLQLifeliqe, Inc.https://www.lifeliqe.com/#1414
MAGNUMMagnum Enginehttps://magnum.graphics/
info at magnum.graphics		#2222
MANYFOLDManyfoldhttps://manyfold.app/
james at floppy.org.uk		#2398
MAXARMaxar Technologieshttps://www.maxar.com/#1869
MESHOPTmeshoptimizerhttps://meshoptimizer.org/#1634
MF3D Model Foundryhttps://www.3dmf.com/
mike at 3dmf.com		#2523
MIRRORThe Mirror Megaverse Inc.https://www.themirror.space/
khronos at themirror.space		#2230
MODUPLAYModuplay Group Pty Ltd.https://moduplaygroup.com.au/
matthew.h at moduplay.com.au		#2445
MOZMozilla Corporationhttps://www.mozilla.org/#1349
MPEGThe Moving Picture Experts Grouphttps://www.mpeg.org/
tsto at qti.qualcomm.com
young.l at samsung.com		#1754
MSFTMicrosoft Corporationhttps://www.microsoft.com/#1164
MTTRMatterport, Inc.https://matterport.com/#2150
MXThe Matrix.org Foundationhttps://matrix.org/#2126
NEEDLENeedle Toolshttps://needle.tools/
felix at needle.tools		#2131
NTARNextech AR Solutions Inc.https://www.nextechar.com/
mitch at nextechar.com		#2188
NVNVIDIA Corporationhttps://www.nvidia.com/#1211
OFTOppenFuture Technologieshttps://www.hololux.cn/en/#1957
OMIOpen Metaverse Interoperability Grouphttps://github.com/omigroup/OMI#2003
OTOYOTOY, Inc.https://otoy.com/#2112
OWLIIOwlii, Inc.https://www.owlii.com/#1093
PANDA3DPanda3Dhttps://www.panda3d.org/#1828
POLUTROPONPolutropon Gameshttps://polutropon.games/
ybalrid at polutropon.games		#1632
PTCPTC Inc.https://www.ptc.com/#1851
PYTHAPYTHA Lab GmbHhttps://www.pytha.com/#2581
S8SSoft8Softhttps://www.soft8soft.com/#1240
SESchneider Electric SEhttps://www.se.com/#2134
SEINHiloteamhttps://seinjs.com/#1840
SHAPEDIVERShapeDiver GmbHhttps://www.shapediver.com/#2103
SISmithsonian Institutionhttps://www.si.edu/#1410
SIRADELSiradelhttps://www.siradel.com/#2469
SKFBSketchfab, Inc.https://sketchfab.com/#1239
SKYLINESkyline Software Systems, Inc.https://www.skylinesoft.com/#1704
SNAPSnap, Inc.https://snap.com/#2125
SPECTRUMSpectrumhttps://spectrumcustomizer.com/#1804
TENCENTTencent, Inc.https://www.tencent.com/#2118
TRACETracehttps://www.trace3d.app/
martin at trace3d.app		#2416
TRYONTRYON Technology Ltd.https://tryon.technology/#1785
UNITYUnity Software Inc.https://unity.com/#2185
USSFUS Space Forcehttps://www.spaceforce.mil/#2177
UX3DUX3D GmbHhttps://ux3d.io/#1896
VRMCVRM Consortiumhttps://vrm-consortium.org/#1874
VSEKAIV-Sekaihttps://v-sekai.org/
ernest.lee at chibifire.com
xn.lyuma at gmail.com		#2206
WEB3DThe Web3D Consortium, Inc.https://www.web3d.org/
WGEWebgears Inc.https://webgears.app/
contact at webgears.app		#2299