Update README.md

README.md

@@ -6,3 +6,6 @@ Full write up on my website [Rototron](https://www.rototron.info/projects/esp32-
 [![ILI9341 Tutorial](https://img.youtube.com/vi/NJuOkSSfgUQ/sddefault.jpg)](https://youtu.be/NJuOkSSfgUQ )
 
 _Tested on ESP32 (Wemos Lolin32 & Loline32 Pro)_
+
+Use the img2rgb565.py tool located in the utils folder to change image files like JPEG and PNG into the required raw RGB565 format.
+The fonts available in this repository were made with a free conversion tool named [GLCD Font Creator](https://www.mikroe.com/glcd-font-creator/).