ZX Spectrum UDG Designer
Design, edit and store ZX Spectrum User Defined Graphics. Create individual 8×8 UDGs or larger graphics made from multiple UDGs, then generate the data needed for Sinclair BASIC.
UDG Character Bank
Click a UDG to load it into the editor. Changes made to the current graphic are immediately reflected in all affected UDG previews.
UDG A
Preview
UDG Output
Select the output format you want to view.
About ZX Spectrum UDGs
A standard ZX Spectrum User Defined Graphic is an 8 × 8 pixel graphic stored as eight bytes. Each bit in a byte represents one pixel in a row of the graphic.
The UDG character set provides 21 characters, from UDG A through UDG U in the 48K Spectrum. On the 128K Spectrum, UDG T and U are unavailable for normal UDG use.
Larger graphics can be constructed by combining several 8 × 8 UDGs.