diff --git a/bin/padjpeg b/bin/padjpeg
index d37612f..c843502 100755
--- a/bin/padjpeg
+++ b/bin/padjpeg
@@ -2,6 +2,15 @@
 set -e # exit on failure
 IFS=$(printf '\n\t') # smarter ifs
 
+jxl=0
+if file "$1" | grep 'JPEG XL'; then
+    jxl="$1"
+    out=$(mktemp --suffix=.jpg)
+    djxl "$1" "$out"
+    shift
+    set -- "$out" "$@"
+fi
+
 test "$RATIOW" || RATIOW=16
 test "$RATIOH" || RATIOH=9
 imageh=$(identify -format %h "$1")
@@ -11,8 +20,9 @@ img_ratio=$(printf '3 k %u %u / p' "$imagew" "$imageh" | dc)
 
 wide="$(echo "$img_ratio > $des_ratio" | bc )"
 if [ "$wide" -gt 0 ] ; then
-    mv "$1" ".$1_padjpegtmp.jpg"
-    jpegtran -rotate 90 -outfile "$1" ".$1_padjpegtmp.jpg"
+    backup=$(mktemp)
+    mv "$1" "$backup"
+    jpegtran -rotate 90 -outfile "$1" "$backup"
     imageh=$(identify -format %h "$1")
     imagew=$(identify -format %w "$1")
     des_ratio=$(printf '3 k %u %u / p' "$RATIOH" "$RATIOW" | dc)
@@ -20,14 +30,17 @@ fi
 
 des_width=$(printf '1 k %f %u * p' "$des_ratio" "$imageh" | dc | cut -d. -f1)
 offset=$(printf '%u %u - 2 / p' "$des_width" "$imagew" | dc)
+outfile="$(dirname "$1")/tran_$(basename "$1")"
 
-if test "$REFLECT"; then
-    jpegtran -crop "$des_width"r+"$offset" -outfile "tran_$1" "$1"
-else
-    jpegtran -crop "$des_width"f+"$offset" -outfile "tran_$1" "$1"
-fi
+test "$REFLECT" && mode=r || mode=f
+jpegtran -crop "$des_width$mode+$offset" -outfile "$outfile" "$1"
 
 if [ "$wide" -gt 0 ] ; then
-    mv ".$1_padjpegtmp.jpg" "$1"
-    jpegtran -rotate 270 -outfile "tran_$1" "tran_$1"
+    mv "$backup" "$1"
+    jpegtran -rotate 270 -outfile "$outfile" "$outfile"
+fi
+
+if [ "$jxl" != 0 ]; then
+    cjxl -e 8 "$outfile" "tran_$jxl"
+    rm "$outfile" "$1"
 fi