Reviewed against the current product on July 18, 2026 · Published by Unity Asset Exporter.
A .unitypackage is Unity's own export format — a compressed archive full of GUID-named
folders. Other engines can't read it. Converting it to GLB gives you one portable file
that opens everywhere, with the materials and textures already wired.
What the conversion actually does
Inside a package, meshes, materials and textures are separate assets linked only by GUIDs. This tool reads
each FBX mesh, follows the GUID references to the matching .mat materials, resolves those to the
real image files, then bakes everything into a single binary glTF (.glb). You get geometry,
material definitions and embedded textures in one file — no loose folders to untangle.
Why GLB?
GLB is the binary flavour of glTF 2.0, the closest thing 3D has to a universal delivery format. It is self-contained, so there are no missing-texture surprises when you move the file between machines.
- Blender —
File → Import → glTF 2.0and the model appears fully textured. - Godot — drop the
.glbinto the project; it imports as a ready scene. - three.js / web — load it directly with
GLTFLoader; ideal for the browser. - General DCC / viewers — most modern tools and online previews accept GLB natively.
How textures and materials survive
Unity doesn't store texture paths inside the FBX. It keeps the wiring in .meta sidecar files and
.mat assets that point at textures by GUID. Extractors that just dump files break that chain —
you end up rebinding maps by hand. Here, the GUID graph is resolved before export, so base color, normal,
metallic/roughness, emission and ambient occlusion maps land on the right material slots automatically.
Convert in three steps
- Drop the package onto the box above (or use Choose file). It's read locally — nothing uploads.
- Preview a model or scene in the 3D viewer to confirm the materials look correct.
- Download the GLB. Textures are embedded; export several models at once as a ZIP if you like.
Honest limits
FBX (binary and ASCII, version 7.0+) is fully supported today; OBJ is on the way. PNG, JPG, TGA, WebP, BMP, GIF and common PSD, TIF/TIFF, DDS, HDR and EXR variants decode in-browser. Character skeletons are preserved, while characters export in their saved static pose. Animation preview and animation transfer to GLB are not available; original animation FBX files remain available for download.