JavaScript/WASM Performance Comparison

A performance comparison tool for fractal image calculation in JavaScript and Web Assembly

You can switch between using JavaScript to perform the calculations (press 'j') or Web Assembly (press 'w')

This tool creates an image of the Mandelbrot Set, then as you move the mouse pointer over the image, the corresponding Julia Set for that location is dynamically calculated and the calculation time displayed.

IMPORTANT

The Web Assembly runtimes are quite consistent across different browsers; however, the JavaScript runtimes are not particularly consistent, and values will vary depending on the JavaScript engine your browser uses

Engine	Browser	Comments
SpiderMonkey	Firefox	Tends to be the fastest - sometimes being as fast as, or slightly faster than Web Assembly
JavaScriptCore	Safari	Tends to be a little slower than SpiderMonkey
V8	Brave Google Chrome/Chromium	Tends to be slower than either SpiderMonkey or JavaScriptCore
Chakra	Microsoft Edge	No data

Additional Resources

• The Rust part of this application can be found in this Git Repository