rush-png

# encode any message string to a .png
> ./rush-png encode [path]/xxx.png  "月へ連れてって"
# decode the first message string you write to 
> ./rush-png decode [path]/xxx.png  
> message: 月へ連れてって
# remove the first message string you write to
> ./rush-png remove [path]/xxx.png  

inspired by PNGme

Later, jpg, jpeg, webp and other formats will be supported.