Draw with a language made for lines, color, and rhythm.

Write commands line by line. The turtle moves, turns, and paints. Variables, loops, conditions, and functions are all supported.

Basic syntax

One command per line. Comments start with // or #. The loop index is _ and starts at 1.

let size = 100
speed 0
home
forward size
right 90

Movement

Command	What it does
forward n / fd	Move forward. Draws if the pen is down.
backward n / bk	Move backward.
left n / lt	Turn left in degrees.
right n / rt	Turn right in degrees.
penup / pendown	Lift or lower the pen.
home	Return to center, heading right (0°).
setxy x y	Teleport. Aliases: goto, teleport, setpos.
setheading n	Face an absolute angle. 0 is right, -90 is up.
pos / heading	Print the current position or angle in the console.

Style

Command	What it does
color red	Stroke color. Named CSS colors, hex, or hsl(_ * 10, 50, 60).
width 2.5	Stroke thickness.
background #08090d	Fill the canvas.
beginfill gold … endfill	Fill the enclosed path.
circle r / dot r	Circle at the turtle, or a filled dot.
curve 180	Arc approximation. Default 180 steps.
label "Hello" size=20 color=gold	Draw text. Optional: font, x, y.
hideturtle / showturtle	Hide or show the turtle marker.

Control flow

repeat 6
  forward 80
  right 60
endrepeat

if _ mod 2 = 0 then color gold
if size > 20
  forward size
else
  dot 4
endif

Functions

function hex size
  repeat 6
    forward size
    right 60
  endrepeat
endfunction

hex 90

Expressions

Available math: sin cos tan sqrt abs floor ceil round min max pow random hsl rgb pi e. Canvas size is canvasw and canvash. Use mod for remainder. Hex colors like #e8b86d are supported; a # comment must sit on its own line.

Studio shortcuts

Ctrl+Enter run · Esc stop · drag the canvas to pan · scroll to zoom · Export PNG saves the drawing.