Nothing
library(sf)
mtq <- st_read(system.file("gpkg/mtq.gpkg", package="cartography"), quiet = TRUE)
#Local file
dirpng = system.file("img/LogoMartinique.png", package = "cartography")
xtest=getPngLayer(mtq,dirpng)
expect_silent(pngLayer(xtest))
expect_error(pngLayer(mtq))
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.