Version: 2022.3
Language : English
Supported Asset Types
Scripted Importers

Built-in Importers

Unity supports many asset file types via its collection of built-in importers. Most of these importers are implemented in the Unity Editor’s native code, and are named “native importers”. They provide the import functionality for most of Unity’s basic asset types, such as 3D models, Textures, and audio files.

Built in native importers

Importer File Formats
AssemblyDefinitionImporter asmdef
AssemblyDefinitionReferenceImporter asmref
AudioImporter ogg, aif, aiff, flac, wav, mp3, mod, it, s3m, xm
ComputeShaderImporter compute
DefaultImporter rsp, unity
FBXImporter fbx, mb, ma, max, jas, dae, dxf, obj, c4d, blend, lxo
IHVImageFormatImporter astc, dds, ktx, pvr
LocalizationImporter po
Mesh3DSImporter 3ds
NativeFormatImporter anim, animset, asset, blendtree, buildreport, colors, controller, cubemapA collection of six square textures that can represent the reflections in an environment or the skybox drawn behind your geometry. The six squares form the faces of an imaginary cube that surrounds an object; each face represents the view along the directions of the world axes (up, down, left, right, forward and back). More info
See in Glossary
, curves, curvesNormalized, flare, fontsettings, giparams, gradients, guiskin, ht, mask, mat, meshThe main graphics primitive of Unity. Meshes make up a large part of your 3D worlds. Unity supports triangulated or Quadrangulated polygon meshes. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. More info
See in Glossary
, mixer, overrideController, particleCurves, particleCurvesSigned, particleDoubleCurves, particleDoubleCurvesSigned, physicMaterial, physicsMaterial2D, playable, preset, renderTexture, shadervariants, spriteatlas, state, statemachine, texture2D, transition, webCamTexture, brush, terrainlayer, signal
PackageManifestImporter json
PluginImporter dll, winmd, so, jar, java, kt, aar, suprx, prx, rpl, cpp, cc, c, h, jslib, jspre, bc, a, m, mm, swift, xib, bundle, dylib, config
PrefabImporter prefabAn asset type that allows you to store a GameObject complete with components and properties. The prefab acts as a template from which you can create new object instances in the scene. More info
See in Glossary
RayTracingShaderImporter raytrace
ShaderImporter cginc, cg, glslinc, hlsl, shaderA program that runs on the GPU. More info
See in Glossary
SketchUpImporter skp
SpeedTreeImporter spm, st
SubstanceImporter .sbsar
TextScriptImporter txt, html, htm, xml, json, csv, yaml, bytes, fnt, manifest, md, js, boo, rsp
TextureImporter jpg, jpeg, tif, tiff, tga, gif, png, psd, bmp, iff, pict, pic, pct, exr, hdrhigh dynamic range
See in Glossary
TrueTypeFontImporter ttf, dfont, otf, ttc
VideoClipImporter avi, asf, wmv, mov, dv, mp4, m4v, mpg, mpeg, ogv, vp8, webm
VisualEffectImporter vfx, vfxoperator, vfxblock

Built-in scripted importers

Scripted importers allow you to write your own custom importers for formats that Unity does not natively support. However, in addition to the built-in native importers listed above, some of Unity’s own built-in importers are themselves implemented as scripted importers. This is because they are implemented in C# in core packages, rather than within the Editor’s native code itself. Unity imports scripted importer assets after native importer assets.

Importer File Formats
StyleSheetImporter .uss
UIElementsViewImporter .uxml
Supported Asset Types
Scripted Importers
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