Modeling

Retopology

Retopology is the process of rebuilding a model's surface with cleaner geometry, turning dense scans or sculpts into optimized meshes ready for animation and games.

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What is Retopology?

Retopology is the process of creating a new, optimized polygon mesh over the surface of an existing model. It replaces the dense, uneven topology of a sculpt or 3D scan with clean, evenly spaced quads. Those quads deform well and are efficient to render.

How it works

High-poly sculpts and scans often have millions of triangles with messy, animation-hostile topology. Retopology produces a low-poly mesh that follows the form with good edge flow, using loops around joints, eyes, and mouths. That flow lets the model animate cleanly and run in real time. Detail from the original is preserved by baking it into normal and displacement maps applied to the new mesh.

Retopology vs decimation

Quads, 10k-70k tris

Target for game characters

90%+ from sculpt

Typical reduction

Retopology

Decimation

What it does

Rebuilds a clean, quad-based surface

Deletes triangles from the existing surface

Output topology

Animation-friendly edge loops

Irregular triangles

Speed

Slow (manual) to minutes (auto)

Seconds

Use when

The mesh must deform (characters)

You only need fewer polygons (props, scans)

Both reduce polycount; only retopology produces geometry you would rig. For static assets decimation is usually enough.

In Meshy Run Remesh in the Workspace to rebuild AI-generated geometry at a target polycount with quad-dominant topology before rigging.

Use cases

Converting a ZBrush sculpt into an animation-ready character
Cleaning up a photogrammetry scan for real-time use
Reducing polygon count while keeping silhouette and detail

Game Assets 3D Animation 3D Printing

Last updated September 14, 2026

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Other terms

Mesh Normal Map LOD Displacement Map 3D Modeling Photogrammetry 3D Scanning Geometry Albedo Map

Frequently Asked Questions

Retopology is the process of building a new, optimized polygon mesh over the surface of an existing model. It replaces the dense, uneven topology of a sculpt or 3D scan with clean, evenly spaced quads that deform well and render efficiently. The original detail is preserved by baking it into normal and displacement maps.

Sculpts and scans have dense, irregular geometry that animates poorly and is expensive to render. Retopology rebuilds the surface with clean, efficient edge flow so the model deforms correctly at joints and facial features and performs in real time. It is a key bridge between sculpting and a game- or film-ready asset.

Good topology uses mostly four-sided faces, or quads, with edge loops that follow the form of the model. Loops concentrate around areas that bend, such as elbows, knees, and the eyes and mouth, so the mesh deforms smoothly during animation while keeping polygon counts efficient.

In Blender you can retopologize manually with the Poly Build tool and snapping enabled over the high-poly surface, or use modifiers and add-ons like the Shrinkwrap modifier and Quad Remesher. Enabling surface snapping keeps your new low-poly mesh glued to the reference shape.

Manual retopology gives an artist full control over edge flow, which is essential for characters that deform. Automatic retopology, or auto-remeshing, generates a uniform mesh at a target polycount quickly and is great for props, hard-surface pieces, and fast turnarounds. Many pipelines mix both.

Popular options include Blender with its retopology tools and Quad Remesher, ZBrush's ZRemesher, TopoGun, Maya's Quad Draw, and 3D-Coat. Meshy's automatic remesh also generates clean topology at a chosen polygon count directly from generated or imported meshes.

Retopology creates the clean low-poly mesh, and the fine detail from the original high-poly model is transferred onto it by baking a normal map. Together they let a lightweight, animation-friendly mesh display the appearance of a highly detailed sculpt.

Yes. Automatic and AI-assisted retopology tools generate a clean mesh at a target polycount, which you can use directly or refine by hand. Meshy's remesh feature automatically retopologizes generated models into clean quad or triangle meshes in one click.

Meshy's remesh feature automatically retopologizes AI-generated models into clean quad or triangle meshes at your target polygon count. This turns raw generated geometry into production-ready assets without a manual retopology pass, saving hours of cleanup.

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Retopology

What is Retopology?

How it works

Retopology vs decimation

Use cases