diff --git a/examples-dark/.gitkeep b/examples-dark/.gitkeep
new file mode 100644
index 0000000..d4db507
--- /dev/null
+++ b/examples-dark/.gitkeep
@@ -0,0 +1 @@
+This directory is preserved for the output from rendering examples.
diff --git a/examples-light/.gitkeep b/examples-light/.gitkeep
new file mode 100644
index 0000000..d4db507
--- /dev/null
+++ b/examples-light/.gitkeep
@@ -0,0 +1 @@
+This directory is preserved for the output from rendering examples.
diff --git a/tox.ini b/tox.ini
index 5a37743..f711261 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,3 +15,11 @@ skip_install = True
 commands =
     ruff check
     ruff format --check
+
+[testenv:render-examples]
+deps =
+    Pillow
+commands =
+    # TODO(vytas): Make font name (auto-) configurable, not hardcoded.
+    pygmentize example-code/document.md -O 'font_name=SourceCodePro-Medium,font_size=24,style=falconry-dark' -o examples-dark/document.png
+    pygmentize example-code/document.md -O 'font_name=SourceCodePro-Medium,font_size=24,style=falconry-light' -o examples-light/document.png