How to UV unwrap a 3D model online
- 1
Upload your model
Drop a GLB, GLTF, OBJ, FBX, STL or PLY file. If it has no usable UVs, it is unwrapped right away.
- 2
Check the UVs
A checker on the model shows seams and stretch; the UV layout shows every island. Pick fewer seams or less stretch and unwrap again.
- 3
Download or texture it
Get a GLB or OBJ with the new UVs and a UV layout PNG, or press Texture it with AI to paint it in the studio.
Check your UVs with a checker map
Put a free UV checker texture on the unwrapped model to spot stretching, seams and flipped islands before you texture it.
Open the UV checker mapFrequently Asked Questions
Yes, it is free and needs no login or credits. Unwrapping and every download run in your browser.
No. The file is opened, unwrapped and exported on your own device; it is never uploaded.
GLB, GLTF (as one file), OBJ, FBX, STL and PLY, up to 60 MB and 600,000 triangles. You can download a GLB or OBJ with the new UVs and the UV layout as a 1024 or 2048 px PNG.
Neighbouring triangles that face about the same way are grouped into islands (40, 55 or 66 degrees, your choice), each island is flattened, and all islands are packed into the 0-1 UV square with padding between them, at the same texel density everywhere. The checker on the model shows where the seams are and how much each part is stretched.
The tool checks them first. If your UVs stay inside the 0-1 square and overlap less than 5%, it tells you they look fine and keeps them; you can still make new ones. New UVs replace the old ones, so an old texture no longer fits: the download keeps the material colours but not the texture images.
Press Texture it with AI: the AI 3D Texturing Studio opens with the same model, where AI paints it from every side (2 credits per view) and the Heal and Paint brushes are free. Or paint over the UV layout PNG in any image editor and use it as the texture of the downloaded GLB or OBJ.