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Rigbridge

by Kajin·Workflow

Images © Kajin. Used for product review; image policy.

Why we like it

RigBridge stands out in the superhive library because it pairs a custom FBX export pipeline with on-mesh weight diagnostics in a single toolkit, covering both getting a rig into an engine and checking where its deformation fails first.

What is Rigbridge?

RigBridge is a rig export and weight toolkit for Blender, built to move rigs and animations from the viewport into a game engine cleanly. It ships a custom FBX exporter and a deformation stress test that shows where weights will fail before export, with profiles for UE5, UE4, Unity, Godot, and custom engines across Blender 4.2 to 5.1+.

The one-click pipeline runs from picking a rig and mesh to Build + Bake All: it generates a game-ready skeleton, binds every mesh in the scene, bakes every animation in the file, and exports through its own FBX pipeline with per-engine settings. Weapons, helmets, armor, and bone-parented props are found automatically and remapped for export.

On the diagnostics side, a 21-pose stress test measures every vertex for tearing and compression and paints the results on the mesh, while a live heatmap updates as you paint. Five quality maps and 24 diagnostic validators cover the rest, and humanoid, quadruped, and bird presets sit alongside custom and export-only modes.

Who is Rigbridge best for?

Rigbridge is best for blender artists exporting rigs and animations to game engines such as UE5, UE4, Unity, and Godot.

How much does Rigbridge cost?

Rigbridge is completely free to download and use.

Key features

  • Custom FBX exporter with per-engine profiles for UE5, UE4, Unity, Godot, and custom engines
  • One-click Build + Bake pipeline that generates a game-ready skeleton, binds every mesh, and bakes every animation
  • 21-pose deformation stress test that paints tearing and compression results on the mesh
  • Live heatmap in weight paint that updates as you bend a bone, with no bake
  • Five quality maps — Stretch, Influence, Dominance, Symmetry, and Velocity — that stack over the stress test or run on their own
  • Multi-mesh binding with automatic attachment discovery for weapons, helmets, armor, and bone-parented props
  • 24 diagnostic validators with Quick Check, Run All, and Deep Analysis

Tags

#rigging#FBX export#game engine#UE5#Unity#Godot#weight paint#Rigify

Frequently asked questions

Which Blender versions and game engines does RigBridge support?

RigBridge works with Blender 4.2 through 5.1+ and ships per-engine export profiles for UE5, UE4, Unity, Godot, and custom engines. It supports Rigify with full coverage, Mixamo, custom rigs, and an export-only mode. Export runs through a custom FBX fork and glTF 2.0, and no external dependencies are required. The custom exporter is built to handle what Blender's stock export doesn't, so animations in-engine match the viewport.

Does RigBridge work with non-humanoid rigs?

RigBridge ships humanoid, quadruped, and bird presets in the box, and its custom and export-only modes handle dragons, spiders, mechs, and anything with bones and a mesh. On non-humanoid rigs, the stress poses generate from the skeleton itself. It also handles faces on any rig through a single button. Multi-mesh binding with automatic attachment discovery finds and remaps weapons, helmets, armor, and bone-parented props for export.

How does the deformation stress test in RigBridge work?

RigBridge runs 21 extreme poses and measures every vertex for tearing and compression, painting the results directly on the mesh — red where weights fail, green where they hold. Five quality maps, covering Stretch, Influence, Dominance, Symmetry, and Velocity, stack over the stress test or run on their own. A live heatmap updates as you enter weight paint, click a bone, and scroll to bend it, with no bake and no waiting.

Is RigBridge free, and does it get updates?

RigBridge is listed as free here, so check the developer's page for current licensing details. Free updates are provided on the v1.x line, and the developer offers direct support with any reported issue getting fixed. You can reach out on X (@Kajjiin) or send a message through superhive. Version 1.0 ships the custom FBX exporter, the one-click Build + Bake pipeline, the stress test and quality maps, and the 24 diagnostic validators.

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