diff --git a/Pre-Consume-Script-Examples.md b/Pre-Consume-Script-Examples.md
index bd1530b..0fb2219 100644
--- a/Pre-Consume-Script-Examples.md
+++ b/Pre-Consume-Script-Examples.md
@@ -4,39 +4,59 @@ This wiki page is a repository of example [pre-consume scripts](https://docs.pap
 ## Removing Blank Pages
 
 - :warning: **This script modifies the original file**
-- Original source: https://github.com/paperless-ngx/paperless-ngx/discussions/668#discussioncomment-3936343
+- Original source: https://github.com/paperless-ngx/paperless-ngx/discussions/668#discussioncomment-3936343 with slight update (suppress warnings for Apple PDFs)
 
 ```bash
-#!/usr/bin/env bash
+#!/bin/bash
+#set -x -e -o pipefail
 set -e -o pipefail
 export LC_ALL=C
 
-THRESHOLD=0.002
-
 #IN="$1"
-IN="${DOCUMENT_WORKING_PATH}"
+IN="$DOCUMENT_WORKING_PATH"
+
+# Check for PDF format
+TYPE=$(file -b "$IN")
+
+if [ "${TYPE%%,*}" != "PDF document" ]; then
+  >&2 echo "Skipping $IN - non PDF [$TYPE]."
+  exit 0
+fi
+
+# PDF file - proceed
+
+#PAGES=$(pdfinfo "$IN" | grep ^Pages: | tr -dc '0-9')
+PAGES=$(pdfinfo "$IN" | awk '/Pages:/ {print $2}')
+
+>&2 echo Total pages $PAGES
+
+
+# Threshold for HP scanners
+# THRESHOLD=1
+# Threshold for Lexmar MC2425
+THRESHOLD=0.8
 
-PAGES=$(pdfinfo "${IN}" | grep -a "^Pages:" | tr -dc '0-9')
 
 non_blank() {
-for (( i="1"; i<="${PAGES}"; i++ )); do
-PERCENT=$(gs -o -  -dFirstPage="${i}" -dLastPage="${i}" -sDEVICE=inkcov "${IN}" | grep CMYK | nawk 'BEGIN { sum=0; } {sum += $1 + $2 + $3 + $4;} END { printf "%.5f\n", sum } ')
-    if awk "BEGIN { exit !(${PERCENT} > ${THRESHOLD}) }"; then
-        echo "${i}"
+  for i in $(seq 1 $PAGES) ; do
+    PERCENT=$(gs -o -  -dFirstPage=${i} -dLastPage=${i} -sDEVICE=ink_cov "${IN}" | grep CMYK | nawk 'BEGIN { sum=0; } {sum += $1 + $2 + $3 + $4;} END {  printf "%.5f\n", sum } ')
+    >&2 echo -n "Color-sum in page $i is $PERCENT: "
+    if awk "BEGIN { exit !($PERCENT > $THRESHOLD) }"; then
+      echo $i
+      >&2 echo "Page added to document"
     else
-        >&2 echo "Color-sum is ${PERCENT}: will remove blank page ${i} of ${IN}"
+      >&2 echo "Page removed from document"
     fi
-done
+  done
 }
 
-NON_BLANK="$(non_blank)"
-NON_BLANK="$(tr '\n' ' ' <<<"${NON_BLANK}")"
-NON_BLANK="${NON_BLANK% }"
+NON_BLANK=$(non_blank)
 
-if [ -n "${NON_BLANK}" ]; then
-    NON_BLANK=$(echo "${NON_BLANK}" | tr ' ' ",")
-    qpdf "${IN}" --replace-input --pages . "${NON_BLANK}" --
+if [ -n "$NON_BLANK" ]; then
+  NON_BLANK=$(echo $NON_BLANK  | tr ' ' ",")
+  qpdf "$IN" --warning-exit-0 --replace-input --pages . $NON_BLANK --
 fi
+
 ```
 
 ## Cleaning with `qpdf`