Polygon with a lot of vector simplifier

I tried the Google Gemini AI to make me a program to simplify a polyline with a lot of vectors. (used to be a spline)
Im impressed with the output and how easy it is to create such a program without any know-how of programming.
Feel free to save the HTML page and use/change it.

http://www.rbsvl.nl/website/zenna/DXF_Polyline_Simplifier.html