Take screenshot with xfce4-screenshooter...

myss.sh

#!/bin/bash

# Purpose : Wrapper for xfce4-screenshooter
# Author  : Ky-Anh Huynh
# License : Public domain
# Date    : 2017-Aug-23rd

# See also https://www.gtk.org/api/2.6/glib/glib-Miscellaneous-Utility-Functions.html#g-get-tmp-dir
export TMPDIR=$HOME/df/ss/

# set -x
if (( $# )); then
  _FILE="$1"
  if [[ ! -f "$_FILE" ]]; then
    echo >&2 ":: File does not exist \"$_FILE\""
    exit 1
  fi
  _F_JPEG="$TMPDIR/$(basename "$_FILE" .png).jpg"
  convert -quality 85 "$_FILE" "$_F_JPEG"
  rm -fv "$_FILE"
  gliv "$_F_JPEG"
else
  xfce4-screenshooter --open "$0" --region
fi