diff --git a/README.md b/README.md
index 34504e0..4a1d445 100644
--- a/README.md
+++ b/README.md
@@ -8,3 +8,13 @@ just install it to `~/.local/share/fonts` or whatever and use the script
 wherever you want.
 
 Requires imagemagick and a shell.
+
+```
+Usage: $name [OPTION]... CAPTION...
+Make an iFunny GIF caption.
+
+  -f, --font        specify a font to use (default: ifunny.otf)
+  -i, --input       the input file (required)
+  -o, --output      the output file (default: input)
+      --help        display this help and exit
+```