diff --git a/utils/post-processing/decimate.pl b/utils/post-processing/decimate.pl
new file mode 100755
index 000000000..9e2938c5f
--- /dev/null
+++ b/utils/post-processing/decimate.pl
@@ -0,0 +1,53 @@
+#!/usr/bin/perl -i~
+
+use strict;
+use warnings;
+
+my %lastpos = (X => 10000, Y => 10000, Z => 10000, E => 10000, F => 10000);
+my %pos = (X => 0, Y => 0, Z => 0, E => 0, F => 0);
+
+my $mindist = 0.33;
+
+my $mindistz = 0.005;
+
+my $mindistsq = $mindist * $mindist;
+
+sub dist {
+	my $sq = 0;
+	for (qw/X Y Z E/) {
+		$sq += ($pos{$_} - $lastpos{$_}) ** 2;
+	}
+	return $sq;
+}
+
+while (<>) {
+	if (m#\bG[01]\b#) {
+		while (m#([XYZEF])(\d+(\.\d+)?)#gi) {
+			$pos{uc $1} = $2;
+		}
+		if (
+				(
+					/X/ &&
+					/Y/ &&
+					(dist() >= $mindistsq)
+				) ||
+				(abs($pos{Z} - $lastpos{Z}) > $mindistz) ||
+				(!/X/ || !/Y/)
+			) {
+			print;
+			%lastpos = %pos;
+		}
+		elsif (($pos{F} - $lastpos{F}) != 0) {
+			printf "G1 F%s\n", $pos{F};
+			$lastpos{F} = $pos{F};
+		}
+	}
+	else {
+		if (m#\bG92\b#) {
+			while (m#([XYZEF])(\d+(\.\d+)?)#gi) {
+				$lastpos{uc $1} = $2;
+			}
+		}
+		print;
+	}
+}
diff --git a/utils/post-processing/z-every-line.pl b/utils/post-processing/z-every-line.pl
index 49d5f4502..aaf57e172 100755
--- a/utils/post-processing/z-every-line.pl
+++ b/utils/post-processing/z-every-line.pl
@@ -8,17 +8,17 @@ my $z = 0;
 # read stdin and any/all files passed as parameters one line at a time
 while (<>) {
 	# if we find a Z word, save it
-	$z = $1 if /Z(\d+(\.\d+)?)/;
+	$z = $1 if /Z\s*(\d+(\.\d+)?)/;
 
 	# if we don't have Z, but we do have X and Y
 	if (!/Z/ && /X/ && /Y/ && $z > 0) {
 		# chop off the end of the line (incl. comments), saving chopped section in $1
-		s/\s*([\r\n\;\(].*)//s;
+		s/\s*([\r\n\;\(].*)/" Z$z $1"/es;
 		# print start of line, insert our Z value then re-add the chopped end of line
-		print "$_ Z$z $1";
+		# print "$_ Z$z $1";
 	}
-	else {
+	#else {
 		# nothing interesting, print line as-is
-		print;
-	}
+	print or die $!;
+	#}
 }