This is an extension for Inkscape that draws a Fibonacci spiral.
Author: Richard Sitányi (richard@cdbox.sk)
Files: fibonacci_spiral.py, fibonacci_spiral.inx
Version: 1.0
Date: 11/21/2025
A Fibonacci spiral is a series of connected quarter-circle arcs drawn inside a series of squares with sides corresponding to the Fibonacci sequence (1, 1, 2, 3, 5, 8, 13, 21, 34…). This spiral is an approximation of the golden spiral, which is based on the golden ratio and is a logarithmic spiral that widens by a factor of approximately 1.618 with each quarter turn. Fibonacci spirals are often found in nature and are used in art and photography to create aesthetically pleasing compositions.
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Open the folder with extensions: Edit → Preferences → System → User extensions
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Copy the following into that folder: fibonacci_spiral.inx, fibonacci_spiral.py
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Restart Inkscape.
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In the menu: Extensions → Render → Fibonacci spiral
Inkscape v.1.4.2