diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7bec301
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# dither
+
+This repo implements a number of the dithering methods detailed on <https://surma.dev/things/ditherpunk/>.
+
+light.png, light-hires.jpg, dark.png, and dark-hires.jpg are from Surma's post, used under CC BY-NC-SA 4.0.
+
+david.png is taken from the wikipedia article on dithering, where it was released into the public domain.