diff --git a/Cardcast.md b/Cardcast.md
index aa31381..f3e6b69 100644
--- a/Cardcast.md
+++ b/Cardcast.md
@@ -48,4 +48,14 @@ Anybody can use any Cardcast decks for which they know the code without having t
 
 ## Images on cards
 
-TODO, needed the section link.
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+Images are now safely supported on cards. Existing cards will need updated to work with this.
+
+To display an image (and only an image) on a card, the card text must match this format EXACTLY (with no other text before or after):
+
+```
+[img]http://example.com/my-awesome-image.jpg[/img]
+```
+
+It is not possible to have text and an image on a card at the same time; include the text inside the image.
+
+Image cards are not screen-reader friendly (for obvious reasons). Please use them sparingly.
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