diff --git a/scripts/sent2pdf.sh b/scripts/sent2pdf.sh
index 5f8f7b9..af8c10d 100644
--- a/scripts/sent2pdf.sh
+++ b/scripts/sent2pdf.sh
@@ -1,9 +1,22 @@
 #!/bin/sh
 
+slides=$(( $(perl -0777 -pe 's/\n\n\n/\n\n/igs' < "$1" | grep -cvP '\S') + 1 ))
 [ -z "$2" ] && out="$HOME/out.pdf" || out="$2"
 
+sent "$1" &
+
+while ! xdotool search --onlyvisible --class sent
+do
+    sleep 1
+done
+window=$(xdotool search --onlyvisible --class sent)
+
 folder="/tmp/sent2pdf"
-[ ! -d "$folder" ] && mkdir "$folder" || rm -r "$folder/*"
+if [ ! -d "$folder" ]; then
+    mkdir "$folder"
+else
+    [ -n "$folder" ] && rm -r "$folder/*"
+fi
 
 i="0"
 
@@ -12,15 +25,17 @@ killall unclutter 2> /dev/null
 
 wait4stop="/tmp/stop-sent2pdf"
 touch $wait4stop
-while [ -f $wait4stop ]
+while [ -f $wait4stop ] && [ "$slides" -gt "$i" ]
 do
     i="$(( $i + 1 ))"
-    import "$folder/$i.png" -window current &&
-    xdotool key space &&
+    import "$folder/$i.png" -window current
+    xdotool key --window "$window" space
     sleep 0.3
+
 done
 
-rm "$folder/$i.png"
+rm "$wait4stop" 2>/dev/null
+
 
 files="$(ls -v $folder/*.png | tr '\n' ' ')"