UEFN Texture Validator
Catch texture validation failures before the project upload does.
Pre-check UEFN textures for power-of-two dimensions, 4096 limits, streamability, normal orientation, alpha, memory, and Unreal ORM packing.
Drop a UEFN material set or ZIP
Inspect supported images and ZIP entries locally in your browser. PLAYTEX AI compares the maps as a set, labels measured checks separately from visual heuristics, and shows the evidence behind each finding.
- Power-of-two dimensions
- 4096×4096 non-UI ceiling
- Streaming and mip readiness
- Unreal normal orientation evidence
- ORM packing and linear data
Pricing: This focused check and its evidence are free. Complete Material Preflight and engine-ready repair packaging require Starter or higher.
What texture rules matter for UEFN?
For non-UI textures, UEFN documents a maximum of 4096×4096 and requires each dimension to be a power of two above its streaming threshold. Material data maps should remain linear, normal maps must match Unreal orientation, and compatible AO, roughness, and metallic data can be packed for the intended material graph.
How the check works
- Upload the source files. Choose the real material maps or a ZIP so dimensions, channels, filenames, and decoded pixel samples can be checked together.
- Review measured evidence. Open each finding to see the affected map, observed value, confidence, and proposed repair instead of a generic pass or fail.
- Export deliberately. Choose an engine target, keep or disable individual repairs, and download renamed maps plus an import-settings report.
Confidence matters: dimensions, alpha ranges, vector length, edge differences, and memory are measured directly. Map meaning, baked lighting, useful resolution, and normal orientation can need filenames, a target choice, or artist review.
UEFN Texture Validator FAQ
Are uploaded textures sent to a server?
No. Supported images and ZIP entries are decoded, sampled, and repaired locally in the browser. Closing the page clears the working set unless you download an export.
Does passing this guarantee UEFN project validation?
No. This checks source texture evidence before import. UEFN project validation also evaluates asset settings and project context, so the editor remains authoritative.
Do UEFN textures have to be square?
No. Epic documents that each dimension can be a different power of two, such as 1024×2048.
Primary technical references
Last reviewed . Engine importers and validation rules can change; the cooked project remains authoritative.