by mio·Modeling
Images © mio. Used for product review; image policy.
Mio3 UV stands out in the Blender Extensions library for the breadth of its UV toolset, spanning unwrapping, alignment, arrangement, symmetry, and selection. Version 2 targets Blender 5 and later, while Blender 4 users are directed to the 1.5 branch.
Mio3 UV is a UV editing support add-on for Blender, built to make UV unwrapping more approachable for everyone from beginners to professionals. It includes features particularly suited for character modeling, and its panel lives in the UV Image Editor sidebar under Mio3.
Its unwrap operators cover Unwrap, which keeps the original position, size, and angle as much as possible, along with Straight, Normalize, Gridify, Rectify, Projection Unwrap, and Virtual Mirror. Layout tools handle alignment, sorting, and distribution, while arrange operators include Relax, Stack, Merge, Circle, Offset Boundary, Align Seams, and Stretch. Symmetry and selection operators work from coordinates in 3D space, and there are dedicated tools for marking seams and selecting flipped UV faces.
Utility features add an original checkered map, a padding overlay, a UV to Mesh modifier setup, and exposure adjustment, several of which use Geometry Nodes. Version 2 supports Blender 5 and later; Blender 4 users should use Ver 1.5. The add-on is released under the GNU General Public License v3.0 or later.
Mio3 UV is best for blender artists working on UV unwrapping and layout, with features particularly suited for character modeling.
Mio3 UV is completely free to download and use.
Mio3 UV Ver 2 supports Blender 5 and later. If you're on Blender 4, the developer directs you to use Ver 1.5 instead. The version listed here is 2.2.0, which targets Blender 5.0 and newer. Installation problems may come down to a compatibility mismatch between your Blender version and the add-on version, so make sure you pair the correct release with your Blender install before troubleshooting further.
Mio3 UV places its tools in the UV Image Editor rather than the 3D Viewport. You'll find its panel under UV Image Editor > Sidebar > Mio3. If it doesn't appear, the developer notes you should make sure you have an object selected that can be UV edited. From that sidebar location you can reach its unwrap, layout, arrange, symmetry, and selection operators, plus seam-marking tools and utilities like the original checker map and padding overlay.
Mio3 UV is listed as free in this catalog and is released under the GNU General Public License v3.0 or later. The project notes it includes code derived and adapted from Blender source, also under the GPL. For current licensing terms and any updates, check the developer's page on GitHub, where you can review the full license and source before installing.
Mio3 UV installs from Blender Extensions. Version 2 is built for Blender 5 and later, while Blender 4 users should install Ver 1.5 instead. If installation fails, it may be a compatibility issue between your Blender version and the add-on version, so confirm you're using matching releases. After installing, the add-on's panel appears in the UV Image Editor sidebar under Mio3.
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