UVO

UVO adds a suite of dynamic overlays to Blender's UV Editor, helping you catch mapping issues before they reach your textures.

ID Overlay

Color-codes your UVs so you can immediately see how they are organized.

• Object & Island Modes — Assigns a distinct color per object, or per topologically connected UV island.

Intersect Overlay

Highlights overlapping and stacked UV islands in real-time.

• Detects overlaps within a single object and across all objects in Edit Mode simultaneously.
• Tiled mode — Folds all UV tiles into (0,1) before detection, finding overlaps between islands in different tiles that share the same texel space.
• UDIM mode — Each tile is treated independently.
• Hatching on intersecting islands, cross-hatching on perfectly stacked islands, and red fill on the overlapping area.

Padding Overlay

Visualizes the padding zone around each island and flags potential mipmap bleed.

Stretch Overlay

Visualizes texel density deviation from a target value using a warped checker grid and color heatmap.

• Checker — Grid deforms to show UV distortion; uniform squares = no stretch.
• Heatmap — Blue (compressed) → gray (uniform) → red (stretched) gradient.
• Both — Checker grid with heatmap colors blended into each cell, combining distortion shape and density feedback in a single view.

Additional Features

• Per-object texture resolution and texel density settings.
• Eyedropper tool to sample density from selected UV islands.
• Correct visualization for non-square textures.