Kitesurfer1404's WS2812FX example adapted for ESP32.
This is just a new version of the WS2812FX segments web example adapted for ESP32.
The example available at the moment of publishing this new version was working fine for 1 single strip (usually 30 LEDs), but it was behaving very randomly when additional strips were attached.
The ESP32's RMT hardware supports up to 8 channels, and one of them has been used to drive a WS2812FX instance. The approach is similar to the one taken on the ws2812fx_esp32 example.
All the details about this library can be found in the WS2812FX Git repository.