bug: LaTeX math expressions have white halos on dark backgrounds

[sei40kr]

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Neovim version (nvim -v)

NVIM v0.11.4

Operating system/version

NixOS 25.11 (Xantusia) x86_64

Describe the bug

LaTeX math expressions rendered inline in documents show white halos/artifacts around text when using dark backgrounds. This occurs because ImageMagick performs anti-aliasing against a white background by default during PDF→PNG conversion, even though the final image has a transparent background.

Steps To Reproduce

1. Set Neovim to dark background: :set background=dark
2. Open a markdown file with LaTeX math expression: $E = mc^2$
3. Observe white halos around the rendered math text

Expected Behavior

Math expressions should render cleanly without halos on both light and dark backgrounds, with anti-aliasing appropriate for the current background setting.

Repro

vim.env.LAZY_STDPATH = ".repro"
load(vim.fn.system("curl -s https://raw.githubusercontent.com/folke/lazy.nvim/
main/bootstrap.lua"))()

require("lazy.minit").repro({
  spec = {
    {
      "folke/snacks.nvim",
      opts = {
        image = {},
      },
    },
  },
})

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This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue was closed because it has been stalled for 7 days with no activity.