ESPUI | A simple web user interface library for ESP32 and ESP8266

Make sure all the dependencies are installed, then install like so:.
ESPUI serves several files to the browser to build up its web interface. This can be achieved in 2 ways: PROGMEM or SPIFFS. OPTIONAL: But if this causes your program to use too much memory you can burn the files into the SPIFFS filesystem on the ESP. There are now two ways to do this: you can either use the ESP file upload tool or you use the library function ESPUI.prepareFileSystem(). Just open the example sketch prepareFileSystem and run it on the ESP, (give it up to 30 seconds, you can see the status on the Serial Monitor), The library will create all needed files. Congratulations, you are done, from now on you just need to do this again when there is a library update, or when you want to use another chip :-) Now you can upload your normal sketch, when you do not call the ESPUI.prepareFileSystem() function the compiler will strip out all the unnecessary strings that are already saved in the chip's filesystem and you have more program memory to work with.