Thanks for the motivation to fix a couple of bugs in Image. As of version 0.26.0 its easier to generate text-based avatars and to produce either square or circular avatars.

There’s no specific support for text-based background color generation but that might be interesting to add to the Image.Color module.

iex> Image.avatar!("./test/support/images/Kip_small.jpg", shape: :square)

image_avatar_square165×165 11.2 KB

iex> Image.avatar!("./test/support/images/Kip_small.jpg", shape: :circle)

image_avatar_circle165×165 15.6 KB

iex> Image.Text.text!("KC", background_fill_color: :cyan, font_size: 200, padding: 80) 
...> |> Image.avatar!(shape: :square) 

text_avatar_square140×140 3.96 KB

iex> Image.Text.text!("KC", background_fill_color: :cyan, font_size: 200, padding: 80) 
...> |> Image.avatar!(shape: :circle) 

text_avatar_circle140×140 5.55 KB

Since Image is based on vix and libvips the code is fast and memory efficient. Definitely faster than using ImageMagick since vix is NIF based. And generally considered more secure that ImageMagick too.

Thank you random chinese bot scraper website! I lost my old blog and now I can recover this post!

I made a new package that uses your PNG generation code: