diff --git a/scripts/gitsch2ppm b/scripts/gitsch2ppm
deleted file mode 100755
index 221e2fd..0000000
--- a/scripts/gitsch2ppm
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/bin/sh
-#
-# gitsch2ppm - Generate PPM files for KiCad schematics in git
-#
-# Written 2010 by Werner Almesberger
-# Copyright 2010 Werner Almesberger
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-
-
-usage()
-{
-    cat <<EOF 1>&2
-usage: $0 [options] top-dir top-schem [commit] outdir
-
-  -c         use cached Postscript files (from previous run, with -k)
-  -k         keep checked-out tree (for immediate reuse with -c)
-  -r XxY     image resolution (default: $RES)
-  -S         sanitize the KiCad profile
-  -w points  Postscript line width (default: $LINEWIDTH)
-EOF
-    exit 1
-}
-
-
-cache=false
-keep=false
-res=
-sanitize=
-width=
-while true; do
-    case "$1" in
-    -c)	cache=true
-	shift;;
-    -k)	keep=true
-	shift;;
-    -r)	[ -z "$2" ] && usage
-	res="-r $2"
-	shift 2;;
-    -S) sanitize=-S
-	shift;;
-    -w)	[ -z "$2" ] && usage
-	width="-r $2"
-	shift 2;;
-    -*)
-	usage;;
-    *)
-	break;;
-    esac
-done
-
-tmp=`pwd`/_gitsch2ppm
-eval outdir=\${$#}
-
-# with thanks to http://www.faqs.org/faqs/unix-faq/faq/part2/section-12.html
-argv=
-while [ $# -gt 1 ]; do
-    argv="$argv \"$1\""
-    shift
-done
-eval set x "$argv"
-shift
-
-if ! $cache; then
-    rm -rf "$tmp"
-    rm -rf "$outdir"
-    gitsch2ps $sanitize "$@" "$tmp"
-    for n in "$tmp"/*.ps; do
-	normalizeschps $width "$n"
-    done
-fi
-
-mkdir -p "$outdir"
-for n in "$tmp"/*.ps; do
-    schps2ppm $res "$n" "$outdir/`basename \"${n%.ps}.ppm\"`"
-done
-
-$keep || rm -rf "$tmp"
diff --git a/scripts/normalizeschps b/scripts/normalizeschps
index 86601ad..0c7d9ee 100755
--- a/scripts/normalizeschps
+++ b/scripts/normalizeschps
@@ -18,7 +18,7 @@ LINEWIDTH=120
 usage()
 {
     cat <<EOF 1>&2
-usage: $0 [options] file ...
+usage: $0 [options] [in.ps [out.ps]]
 
   -w points  Postscript line width (default: $LINEWIDTH)
 EOF
@@ -38,22 +38,24 @@ while true; do
     esac
 done
 
-for n in "$@"; do
-    sed -i '
-      1c%!PS-Adobe-3.0\
-      currentdict /DidNormalize known not { \
-          /setlinewidth { '$LINEWIDTH' 2 copy lt { exch } if pop \
-            setlinewidth } bind def \
-          /rectfill { rectstroke } bind def \
-	  /DidNormalize true def \
-      } if \
-      gsave
-      /%%DocumentMedia: A4.*/a-20 -10 translate
-      /%%DocumentMedia: A3.*/{s/A3/A4/;a-20 -10 translate 0.70 dup scale
-      }
-      /%%DocumentMedia: A2.*/{s/A2/A4/;a-18 -12 translate 0.49 dup scale
-      }
-      $agrestore' "$n"
-done
+[ -z "$3" ] || usage
+in=${1:--}
+out=${2:-/dev/stdout}
+
+sed '
+  1c%!PS-Adobe-3.0\
+  currentdict /DidNormalize known not { \
+      /setlinewidth { '$LINEWIDTH' 2 copy lt { exch } if pop \
+        setlinewidth } bind def \
+      /rectfill { rectstroke } bind def \
+      /DidNormalize true def \
+  } if \
+  gsave
+  /%%DocumentMedia: A4.*/a-20 -10 translate
+  /%%DocumentMedia: A3.*/{s/A3/A4/;a-20 -10 translate 0.70 dup scale
+  }
+  /%%DocumentMedia: A2.*/{s/A2/A4/;a-18 -12 translate 0.49 dup scale
+  }
+  $agrestore' "$in" >"$out"
 
 #      /%%Orientation: Landscape/d' "$n"
diff --git a/scripts/schhist2web b/scripts/schhist2web
index 022d181..213545e 100755
--- a/scripts/schhist2web
+++ b/scripts/schhist2web
@@ -190,18 +190,25 @@ for n in $first `cd "$dir" && git rev-list --reverse $first..HEAD`; do
 	echo Name change $schname to $new 1>&2
 	schname="$new"
     fi
-    trap "rm -rf \"$cache/ppm_$n\" \"$cache/fat_$n\"" 0
+    tmp=`pwd`/_schhist2web
+    trap "rm -rf \"$cache/ppm_$n\" \"$cache/fat_$n\" \"$tmp\"" 0
     if [ ! -d "$cache/ppm_$n" ]; then
-	rm -rf "$cache/ppm_$n"
-	mkdir "$cache/ppm_$n"
+	rm -rf "$cache/ppm_$n" "$cache/fat_$n"
+	mkdir "$cache/ppm_$n" "$cache/fat_$n"
 	#
 	# potential optimization here: remember Postscript files from previous
 	# run (or their md5sum) and check if they have changed. If not, skip
 	# the ghostscript run and just put a symlink, replacing the less
 	# efficient optimization below.
 	#
-	gitsch2ppm $sanitize -k "$dir" "$schname" $n "$cache/ppm_$n" || exit
-	gitsch2ppm -c -w 500 "$dir" "$schname" $n "$cache/fat_$n" || exit
+	gitsch2ps $sanitize  "$dir" "$schname" $n "$tmp" || exit
+	for m in "$tmp"/*.ps; do
+	    ppm="$cache/ppm_$n/`basename "$m" .ps`.ppm"
+	    normalizeschps "$m" | schps2ppm - "$ppm" || exit
+	    ppm="$cache/fat_$n/`basename "$m" .ps`.ppm"
+	    normalizeschps -w 500 "$m" | schps2ppm - "$ppm" || exit
+	done
+	rm -rf "$tmp"
     fi
     for m in "$cache/ppm_$n/"*; do
 	[ "$m" = "$cache/ppm_$n/*" ] && break
diff --git a/scripts/schps2ppm b/scripts/schps2ppm
index d402dfb..86cb36d 100755
--- a/scripts/schps2ppm
+++ b/scripts/schps2ppm
@@ -31,10 +31,9 @@ while true; do
     -r)	[ -z "$2" ] && usage
 	RES="$2"
 	shift 2;;
-    -*)
-	usage;;
-    *)
-	break;;
+    -)	break;;
+    -*) usage;;
+    *)	break;;
     esac
 done