Artificial colored edges in CairoMakie when saving an image to PDF.

[fatteneder]

MWE

using CairoMakie
CairoMakie.activate!()
using FileIO
using Makie

img = load(Makie.assetpath("doge.png"))
i = image(permutedims(img)[:,end:-1:1])
save(joinpath(@__DIR__, "mwe.pdf"), i)

Output:

Adding fxaa=true to image does not fix it either.
Saving as png does work though.

Related: #2080

[fatteneder]

Could this be an issue with a transparent background in the png file?

[jkrumbiegel]

Have you looked at this with multiple different pdf viewers? Just to make sure we're not looking at an implementation-dependent artifact here. Or is the artifact really baked into a bitmap?

[fatteneder]

I checked with

• Evince
• Okular
• Firefox
• Chromium
  and all show the same artifacts.

Here is the PDF file if you want to check yourself: mwe.pdf

[fatteneder]

Fixed by #2304