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Uv Island Colorizer

by phamduyson·Workflow

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

Why we like it

UV Island Colorizer earns its place in the superhive library as a focused UV utility: it combines automatic island coloring, a sidebar panel for renaming and selecting islands, per-island material assignment, and stencil-masked texture painting. It's built for Blender 4.5.0+ under the GPL license, with a demo video and documentation available.

What is Uv Island Colorizer?

UV Island Colorizer is a Blender addon for managing UV unwrapping. It automatically assigns a distinct color to each UV island, so individual islands are easy to spot and select while you work on a mesh. All the controls sit in a single panel in the UV Editor's sidebar, where you can view, rename, and select every island in one place.

Beyond visualization, the addon handles materials and texture painting. You can assign a material to a specific island with one click, with each assignment tracked in the same panel, which suits models that need multiple materials. It can also generate textures for chosen islands with auto-generated stencil masks, then switch into texture paint mode. Colors update as you edit the mesh, and smart caching keeps performance steady as you move between edit and paint modes.

For extra clarity, islands can be shown with custom checkerboard patterns or vertex colors in the 3D viewport. The addon is built for Blender 4.5.0 and later, works with any mesh, and runs under Cycles and Eevee.

Who is Uv Island Colorizer best for?

Uv Island Colorizer is best for blender artists managing UV islands, assigning materials per island, and painting textures on meshes of any complexity.

How much does Uv Island Colorizer cost?

Uv Island Colorizer is completely free to download and use.

Key features

  • Assigns a distinct color to each UV island for instant identification and selection
  • Single sidebar panel in the UV Editor to view, rename, and select all islands
  • One-click material assignment to specific islands, tracked in the same panel
  • Texture generation for chosen islands with auto-generated stencil masks, plus a switch to texture paint mode
  • Colors update as you edit the mesh, with smart caching for performance
  • Custom checkerboard patterns or vertex colors shown in the 3D viewport
  • Works with any mesh and runs under Cycles and Eevee

Tags

#UV mapping#UV unwrapping#texture painting#material assignment#UV islands#Blender addon#workflow

Frequently asked questions

Which Blender version does UV Island Colorizer require?

UV Island Colorizer is built for Blender 4.5.0 and later, so you'll need a compatible install to run it. It works with any mesh, from simple shapes to intricate models, and functions under both the Cycles and Eevee render engines. If you're on an older Blender release, check the developer's page before installing to confirm whether your version is supported, since the addon targets the 4.5.0-and-later line specifically.

Does UV Island Colorizer work with Cycles and Eevee?

UV Island Colorizer works under both Cycles and Eevee, so your chosen render engine won't stand in the way of using it. The addon focuses on UV work rather than rendering itself: it colors islands, manages them from a sidebar panel, assigns materials, and generates paintable textures. It also displays islands with custom checkerboard patterns or vertex colors in the 3D viewport, which the addon sets up for you. For full details, see the developer's page.

Can UV Island Colorizer assign materials to individual UV islands?

UV Island Colorizer lets you assign a material to a specific UV island with a single click, and every assignment is tracked in the same sidebar panel you use to view, rename, and select islands. This is aimed at complex models that need multiple materials, keeping the assignments organized in one place. Alongside material control, the addon can generate textures for chosen islands with auto-generated stencil masks, then move you into texture paint mode to start painting.

Is UV Island Colorizer free?

UV Island Colorizer is listed as free in this catalog. Since licensing and pricing can change, check the developer's page for the current terms before downloading. The addon is distributed under the GPL license, and both a demo video and documentation are available to help you get started. It has been published for roughly eleven months and lists more than ten sales, which gives some sense of its track record.

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