3D Images File Extensions (Raster & Vector)

Extension		File Description
.3d		Stereo CAD-3D Image File
.3d2		Stereo CAD-3D 2.0 Image File
.3d4		Stereo CAD-3D 2.0 Image File
.3da		3D Assembly File
.3dc		3DCT 3D Image
.3df		3D Format
.3dl		LightConverse 3D Model File
.3dm		Rhino 3D Model
.3dmf		QuickDraw 3D Metafile
.3don		Scrutinize 3D Mesh File
.3ds		3D Studio Scene
.3dv		3D VRML World
.3dx		Rhino 3D Model File
.3dxml		Dassault Systemes 3D XML File
.a8s		Anim8or Script
.act		Genesis3D Actor File
.an8		Anim8or File
.anm		3D Animation File
.asat		Assemble SAT 3D Model File
.atm		Vue Atmospheres File
.b3d		Blitz3D Entity Model File
.bip		Character Studio Biped File
.blend		Blender 3D Data File
.br3		Bryce 3 Scene File
.br4		Bryce 4 Scene File
.br5		Bryce 5 Scene File
.br6		Bryce 6 Scene File
.br7		Bryce 7 Scene File
.brg		Age of Mythology Model File
.bro		Broadleaf Tree Model
.bsk		Bryce Skies File
.bto		Bryce Tree File
.bvh		Biovision Hierarchy Animation File
.c4d		Cinema 4D Model File
.cal		3ds Max Pose Adjustment File
.cas		Total War Model File
.chr		3ds Max Characters File
.cm2		Poser Camera Set File
.cmz		Compressed Poser Camera Set File
.cpy		3ds Max Copy Track File
.cr2		Poser Character Rigging File
.crz		Compressed Poser Character Rigging File
.csm		Character Studio Marker File
.d3d		Game Maker 3D File
.dae		Digital Asset Exchange File
.dbs		GAMBIT Mesh File
.des		Corel Designer File
.dff		RenderWare Model File
.dif		Torque Game Engine Model File
.dsi		Double-Precision Spectral Image
.dwf		Design Web Format File
.egg		Panda3D Model File
.exp		CATIA 4 Export File
.fbx		Autodesk FBX Interchange File
.fc2		Poser Face Pose File
.fcz		Compressed Poser Face Pose File
.fg		FaceGen Project File
.fig		3ds Max Figure File
.fnc		Vue Functions File
.fp3		FloorPlan 3D Design File
.fpe		FPS Creator Entity File
.fpf		IKEA Home Planner File
.fry		Fryrender Scene File
.fx		Direct3D Effects File
.fxa		OC3 Entertainment FaceFX Actor File
.geo		VRML Geography File
.grn		Granny 3D File
.hd2		Poser Hand Pose File
.hdz		Compressed Poser Hand Pose File
.hip		Houdini Project File
.hipnc		Houdini Apprentice File
.hr2		Poser Hair File
.hrz		Compressed Poser Hair File
.ifc		Industry Foundation Classes File
.iges		IGES File
.iv		Open Inventor Scene Graph File
.ive		OpenSceneGraph Binary File
.jas		Cheetah3D Model File
.kmc		Kinemac Animation File
.kmcobj		Kinemac Sprite Object
.ldm		VolumeViz Multi-Resolution Volume File
.llm		Linden Lab Mesh File
.lnd		3D Landscape File
.lps		Bryce Leaf Shape File
.lt2		Poser Light Set File
.ltz		Compressed Poser Light Set File
.lwo		LightWave 3D Object File
.lws		LightWave 3D Scene File
.lxf		LEGO Digital Designer Model File
.m3		Blizzard MDX3 Model File
.m3d		DIALux 3D Object File
.m3d		3D Model File
.ma		Maya Project File
.mat		3ds Max Materials File
.max		3ds Max Scene File
.maxc		3ds Max Container File
.mb		Maya Binary Project File
.mc5		Poser 5 Material File
.mc6		Poser 6 Material File
.mcz		Compressed Poser Material File
.md5anim		id Tech 4 Model Animation File
.md5camera		id Tech 4 Model Camera File
.md5mesh		id Tech 4 3D Mesh File
.mdl		Warcraft 3 3D Model Text File
.mdx		Warcraft 3 Model File
.meb		PRO100 3D Interior Catalog Element
.mesh		3D Mesh Model
.mgf		Materials and Geometry Format
.mix		3ds Max Motion Mixer File
.mnm		Character Studio Marker Name File
.mp		Maya PLE Project File
.mrml		3D Slicer Scene Description File
.ms3d		MilkShape 3D Model
.mtl		OBJ Material File
.mtx		MetaStream Scene File
.mtz		Compressed MetaStream Scene File
.mxs		Maxwell Studio Scene File
.nff		Neutral File Format
.nif		Gamebryo Model File
.obj		3D Object File
.obp		Bryce Object File
.obz		Compressed 3D Object File
.off		Object File Format
.ogf		S.T.A.L.K.E.R. Model File
.p21		Express STEP Data Model File
.p2z		Compressed Poser Pose File
.p3d		Peak3D 3D Graphics File
.p3l		Adobe Photoshop Light Preset File
.p3m		Adobe Photoshop Material Preset File
.p3r		Adobe Photoshop Render Settings Preset File
.par		Solid Edge Part File
.pat		3D Patch File
.phy		3ds Max Physique File
.pkg		CoCreate OneSpace Modeling Package File
.pl0		3D Home Architect Foundation Floor Plan
.pl1		3D Home Architect Floor Plan
.pl2		3D Home Architect Second Level Floor Plan
.ply		Polygon Model File
.pmd		MikuMikuDance Model File
.pp2		Poser Prop File
.ppz		Compressed Poser Prop File
.prc		Product Representation Compact File
.prv		Vue Preview File
.psa		Unreal Engine Skeletal Animation File
.psk		Unreal Engine Skeletal Mesh File
.pz2		Poser Pose File
.pz3		Poser Scene File
.pzz		Compressed Poser Scene File
.ray		Rayshade Image
.rcs		RandomControl Scene File
.rds		Ray Dream Studio Scene File
.rft		Revit Family Template File
.s		Microsoft Train Simulator Shape File
.sc4model		SimCity 4 Model File
.sdb		SAP2000 Model File
.session		CATIA 4 Session File
.sh3d		Sweet Home 3D Design File
.sh3f		Sweet Home 3D Model Library
.shp		Shapes File
.si		Softimage Image File
.skl		Maya Skeleton File
.skp		SketchUp Document
.step		STEP 3D Model
.sto		PRO100 3D Interior Design Project
.stp		STEP 3D CAD File
.t3d		Unreal Engine 3D Object File
.tddd		3D Data Description File
.tme		Bryce Time File
.tps		Bryce Tree Shape File
.tri		Triangle Mesh File
.tri		FaceGen Polygonal Model File
.truck		Rigs of Rods Truck Definition File
.u3d		Universal 3D File
.v3d		Visual3D.NET Data File
.v3o		Emergency 3 and 4 Model File
.veg		Vue Vegetation file
.vmd		Vocaloid Motion Data File
.vob		Vue Objects File
.vrl		VRML Virtual World
.vtx		Anim8or 3D Model
.vue		Vue Scene File
.vvd		Vivid 3D Scanner Element File
.wrl		VRML World
.wrp		Geomagic 3D Wrap File
.wrz		VRML World
.x3d		Xara3D Project
.xaf		3ds Max XML Animation File
.xmm		3ds Max XML Animation Map File
.xof		Reality Lab 3D Image File
.xpr		Pro/ENGINEER Part Instance Accelerator File
.xsi		Softimage XSI 3D Image
.xv0		Lattice XVL Structure File
.yaodl		PowerFlip 3D Image File
.ydl		PowerFlip YAODL 3D Image File
.z3d		ZModeler 3D File
.zt		Mental Ray Image Depth File
Source : http://www.fileinfo.com/