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Free auto retopology, No sign-up

A clean new mesh for editing or animation: an even grid of quads or triangles at the count you choose, with the original's colour and detail baked onto it. Usually under a minute, free.

Drop a 3D model

  • STL
  • OBJ
  • PLY
  • GLB
  • glTF

The model is sent to our server for the run and not kept.

How it works

The model is first filled into a fine grid and wrapped in one sealed surface, so holes, overlaps and broken edges stop mattering. QuadriFlow then lays an even field of quads over that surface, following its curvature, at the count you asked for, or on Auto at the fewest that keep the shape; Instant Meshes steps in if it fails. A part thinner than one face is widened to one face and remeshed again, so spokes and blades come through. The new mesh is unwrapped, and every texel of its new textures takes its colour, roughness and surface direction from the nearest point of the original.

The result is a GLB that looks like the original with a fraction of its faces, and an OBJ with the quads, UVs and textures for editing. It runs on our server, and the file is not kept.

Fewer faces, or a smaller file

Two lighter jobs sit on the other tabs, both in your browser; Continue with takes the model there. Reduce merges the triangles the model already has down to a count, which is quicker when the layout of the faces does not matter. Compress keeps the shape and shrinks a GLB for the web or an engine: textures resized, geometry quantized and packed where the engine reads it.

Questions

Is this auto retopology?
Yes. You set a face count and choose quads or triangles, and the new topology is laid out for you: an even grid that follows the curvature of the shape, with no manual edge loops to draw. It is not a hand retopology with loops placed for a face rig, but it gives a clean base for sculpting, UVs, baking or a game asset, and it copes with scans and generated models that manual tools choke on.
Is this AI retopology?
It does the job AI retopology tools advertise: a messy mesh in, clean quads out, with no edge loops to draw. The quads are laid by QuadriFlow, a proven retopology algorithm, not by a neural network, so the same model gives the same result every time. It was built for AI-generated models, which are the meshes that need retopology most and that most remeshers fail on.
What is the difference between remeshing and reducing?
Reducing merges the triangles a model already has, so the count drops but the layout stays as messy as it was. Remeshing throws the old surface away and lays a new, even grid of quads or triangles over the shape. Reduce when you only need fewer triangles, fast; remesh when the topology itself matters: for editing, sculpting, rigging, or a clean game asset.
Are the textures kept?
Yes. The new mesh gets fresh UVs, and for every pixel of its textures the tool looks up the nearest point on the original: colour, metallic and roughness, plus a normal map that carries the fine detail the new mesh is too coarse to hold. The GLB you download looks like the original at a fraction of its faces.
Quads or triangles?
Quads for anything you will keep working on: Blender, ZBrush, rigging and animation all behave better on an even quad grid. Triangles for a game engine or the web, which draw triangles anyway. The OBJ download keeps quads as quads, with UVs, normals and the textures next to it; a GLB always stores triangles, and the wireframe view shows the quads.
How many faces should I ask for?
A background prop in a game: 2–5k. A hero prop or a web model: 10–20k. A character to sculpt on: 20–50k. Auto, the default, tries counts until the shape holds within 0.4% and keeps the fewest; a count you pick is capped at half the faces the model has, so the result comes out lighter. The normal map keeps small detail such as rivets and grain visible well below the count the original needed.
Is the result ready for Godot, Unity or Blender?
The GLB keeps the origin of your file, and its mesh, node and material are named after it. Set Origin to Bottom centre and it stands on the floor where an engine places it. The OBJ download is a ZIP with the .obj, its .mtl, and the colour and normal maps.
Does it work on AI-generated models?
That is what it was built for. Generated meshes come with holes, overlapping parts and edges shared by three faces, which make most remeshers crash. This one seals the model into one surface first, then remeshes that, and bakes the look from the original.
What happens to my file?
It is sent to our server for the run and not kept; the result comes straight back to your browser. Reduce and Compress, two of the other tabs, run entirely in your browser and upload nothing.
Do I need an account or to sign up?
No. There is no sign-up, no login and no email: open the page and use it. The work runs on our server, free.

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