diff --git a/main.go b/main.go
index 4155c75..ee2d8cb 100644
--- a/main.go
+++ b/main.go
@@ -17,8 +17,8 @@ import (
 )
 
 func main() {
-	if len(os.Args) != 2 {
-		fmt.Fprintf(os.Stderr, "Usage: %s <submission id/url>\n", os.Args[0])
+	if len(os.Args) != 2 && len(os.Args) != 3 {
+		fmt.Fprintf(os.Stderr, "Usage: %s <submission id/url> [direct url to download instead of inferring from the post]\n", os.Args[0])
 		os.Exit(1)
 	}
 	LoadMimetypes()
@@ -215,7 +215,11 @@ func main() {
 			break
 		}
 	}
-	unparsedUrl = urls[i]
+	if len(os.Args) == 3 {
+		unparsedUrl = os.Args[2]
+	} else {
+		unparsedUrl = urls[i]
+	}
 	response, err := client.Get(unparsedUrl)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Failed to get response: %s\n", err)