diff --git a/src/ImageShow.jl b/src/ImageShow.jl
index 5c8d7bc..a3ebb80 100644
--- a/src/ImageShow.jl
+++ b/src/ImageShow.jl
@@ -9,6 +9,13 @@ using StackViews
 using ImageCore.MappedArrays
 using ImageCore.PaddedViews
 
+# opt-in HTML render for image
+# work around https://github.com/JuliaImages/ImageShow.jl/pull/50#issuecomment-1124132500
+const _ENABLE_HTML = Ref(false)
+enable_html_render() = _ENABLE_HTML[] = true
+disable_html_render() = _ENABLE_HTML[] = false
+Base.showable(::MIME"text/html", ::AbstractMatrix{<:Colorant}) = _ENABLE_HTML[]
+
 include("showmime.jl")
 include("gif.jl")
 include("multipage.jl")
diff --git a/test/runtests.jl b/test/runtests.jl
index 6b95b7c..c32d32c 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,4 +1,6 @@
 using Test
+using ImageShow
+ImageShow.enable_html_render()
 
 @testset "ImageShow" begin
     include("writemime.jl")