Python Image Encoder using PIL Project can be seen in action here: https://drive.google.com/file/d/12WXrxETh9fwg9-Tik7imv0RB_a8iK2tO/view?usp=sharing
This project takes a message and a value that applies a ceaser shift by that number in ASCII, and then creates an ceaser cypher encrypted message. The ASCII value of each character in that encrypted message is then saved as the A value (transparency) in the RGBA value of each pixel, and a modified image with the message encoded into it is subsequently outputted.
Image before encoding:
Message to be encoded: "Hello, how are you doing today?" Caesar Shift: 5
Encoded Message: "Mjqqt1%mt|%fwj%(削除) tz%itnsl%ytif (削除ここまで)D"
Image with encoded message embedded within the transparency value of the pixels:
This final image looks almost identical to the original.