using PlotlyJS, FileIO, Base64

n=255
I = [i for i in 0:n, j in 0:n]
width=400; height=375
plt=Plot(heatmap(z=mod.(xor.(I, I'), 53), colorscale=colors.algae, showscale=false ),
                 Layout(width=width, height=height, yaxis_autorange="reverse"))       

io = IOBuffer()
PlotlyJS.savefig(io, plt; width=width, height=height, scale=1, format="png") 
bytes = take!(io)
bs64_string= "data:image/png;base64,$(stringmime(MIME("image/png"), bytes))"

#Display image from the bs64 string
Plot(PlotlyJS.image(; source=bs64_string, hoverinfo="none"), 
     Layout(xaxis_visible=false, yaxis_visible=false))