ZX Spectrum Graphics Editor

Design User Defined Graphics — the 21 custom character slots built into ZX Spectrum hardware.

• Each UDG is an 8×8 pixel sprite with its own ink and paper colour.
• Canvas holds up to 21 cells (the hardware limit).
• Exports as Z80 assembly with pixel data, attribute data, and load routines.

Create software sprites that are drawn pixel-accurately into screen memory — not bound to the character grid.

• Monochrome pixel data; colour is applied at runtime.
• Supports multiple animation frames with onion skinning.
• Generates masks and pre-shifted variants for smooth horizontal movement.

Paint a full 256×192 ZX Spectrum screen with ink and paper colours obeying the 8×8 colour-clash constraint.

• Pencil and line tools place foreground (ink) pixels.
• Bucket fill sets the background (paper) colour of whole 8×8 squares.
• Exports the native 6912-byte .scr binary — load straight to $4000.

Design reusable tiles — walls, floors, platforms — in 8×8, 16×16, or 24×24 pixel sizes.

• Each 8×8 block within a tile has its own independent ink and paper colour.
• Save tiles as .json files to reuse across multiple levels.
• Exports pixel and attribute data as Z80 assembly with print routines.

Assemble full game screens by placing tiles on a grid. Build an entire multi-screen game world in one project.

• Each screen is a standard 256×192 ZX Spectrum display.
• Load tiles from the Tile Editor and paint them onto the canvas.
• Exports screen maps, tile data, lookup tables, and a draw_screen routine.

Redesign all 96 ASCII characters (32–127) to create a fully custom font for your game or demo.

• Click any character in the overview grid to edit its 8×8 pixel shape.
• Pixel shape only — ink and paper are applied at runtime by your program.
• Exports as a compact .chr binary or readable DEFB assembly source.