Thumbnail: fill with blank/transparent

[AntoineAugusti]

Hi,

Thanks for this lib 🙏

I have the following code:

Mix.install(
  [{:image, "~> 0.37"}]
)

{:ok, thumb} = Image.thumbnail("/tmp/divia.jpg", 100, fit: :contain)
Image.write(thumb, "/tmp/divia-small.png")

Relevant documentation

Question

How to get a 100x100 image, filled with white/transparent?

Source image

Generated image

Size: 100x38

[kipcole9]

Image.thumbnail/3 will primarily aim to keep the aspect ratio of the image. And it will thumbnail so that the longest edge is the size specified. If you add resize: :force then it will fill the bounding box but the aspect ratio of the image will be stretched which I'm pretty sure is not what you want.

The following is what I would suggest. It thumbnails the image and then embeds it in a white background.

{:ok, logo} = 
  "path/to/image"
  |> Image.thumbnail!(100)
  |> Image.embed!(100, 100, background_color: :white)

Let me know how that goes?

[AntoineAugusti]

Thanks @kipcole9 🙏