Smart UV Project cuts wherever the surface angle changes, so curved models get chopped into hundreds of small islands. SeamMend grows islands across smooth areas, places seams on hard edges and creases, and checks every island for stretch. On the 13 test models it made 2.6× fewer islands with 3.4× less visibly stretched area.

Yes. Retopologized characters work very well. Dense sculpts and scans work too, but detailed areas still get many small islands. For those, unwrap a retopologized version if you can.

Yes. Turn on Keep My Seams and SeamMend adds only what's missing.

Yes. In Edit Mode, select the faces and press Auto Unwrap. The rest of the model keeps its UVs.

Not yet. Everything is packed into the 0–1 square. UDIM support is on the list.

Yes. SeamMend is pure Python with no compiled parts, so it runs anywhere Blender 4.2+ runs.

Auto Unwrap replaces the active UV map. Turn on New UV Map to keep your old UVs, and Ctrl+Z always undoes.

Yes. What you make with SeamMend is yours.