diff --git a/konata.sh b/konata.sh
index 9ff6769..398ffd8 100755
--- a/konata.sh
+++ b/konata.sh
@@ -256,16 +256,18 @@ konachan(){
 4c(){
 	args
 	tmp="/tmp/4chan"
-	json="$tmp/${args[0]}.json"
+	threads="$tmp/${args[0]}.json"
 	[ ! -d $tmp ] && mkdir $tmp
-	[ $(find $json -mmin +60) ] && rm $json
-	[ ! -f $json ] && wget -O $json https://a.4cdn.org/${args[0]}/threads.json
-	thread=$(jq -r '.[].threads[].no' < $json | shuf | head -n1)
-	img=$(curl -s https://a.4cdn.org/${args[0]}/thread/$thread.json | jq -r '.posts[].tim' | shuf | head -n1)
-	url="https://i.4cdn.org/${args[0]}/$img"
-	# TODO: Try to determine from JSON output whether image is PNG or JPG.
-	sendpic "$url.jpg"
-	sendpic "$url.png"
+	[ $(find $threads -mmin +60) ] && rm $threads
+	[ ! -f $threads ] && wget -O $threads https://a.4cdn.org/${args[0]}/threads.json
+	thread=$(jq -r '.[].threads[].no' < $threads | shuf | head -n1)
+	posts=$(curl -s https://a.4cdn.org/${args[0]}/thread/$thread.json)
+	imgs=$(jq -r ".posts[] | select(.ext==\".jpg\"), select(.ext==\".png\")" <<< $posts)
+	no=$(jq -r ".no" <<< $imgs | shuf | head -n1)
+	img=$(jq -r "select(.no==$no) | .tim" <<< $imgs)
+	ext=$(jq -r "select(.no==$no) | .ext" <<< $imgs)
+	url="https://i.4cdn.org/${args[0]}/${img}${ext}"
+	sendpic "$url" "<a href=\"$url\">sauce</a>"
 }
 
 lfy(){