diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8e0ece8e49..ada00a48d4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3636,7 +3636,6 @@ if(SHELLCHECK_EXECUTABLE)
 			packaging/macosx/osx-app.sh.in
 			packaging/macosx/osx-dmg.sh.in
 			packaging/source/git-export-release.sh.in
-			tools/compress-pngs.sh
 			tools/debian-setup.sh
 			tools/fuzz-test.sh
 			tools/gen-bugnote
diff --git a/docbook/CMakeLists.txt b/docbook/CMakeLists.txt
index 264b964595..76234fd150 100644
--- a/docbook/CMakeLists.txt
+++ b/docbook/CMakeLists.txt
@@ -78,7 +78,7 @@ set(WSUG_FILES
 	${COMMON_FILES}
 )
 
-# Note: Images should be minimized using tools/compress-pngs.sh.
+# Note: Images should be minimized using tools/compress-pngs.py.
 set(WSUG_GRAPHICS
 	wsug_graphics/related-ack.png
 	wsug_graphics/related-current.png
diff --git a/tools/alpine-setup.sh b/tools/alpine-setup.sh
index a43d0540f6..11712fbb71 100755
--- a/tools/alpine-setup.sh
+++ b/tools/alpine-setup.sh
@@ -77,6 +77,13 @@ ADDITIONAL_LIST="
 	brotli-dev \
 	"
 
+# Uncomment to add PNG compression utilities used by compress-pngs:
+# ADDITIONAL_LIST="$ADDITIONAL_LIST \
+#	advancecomp \
+#	optipng \
+#	oxipng \
+#	pngcrush"
+
 # Adds package $2 to list variable $1 if the package is found.
 # If $3 is given, then this version requirement must be satisfied.
 add_package() {
diff --git a/tools/bsd-setup.sh b/tools/bsd-setup.sh
index 72a99e05a2..220ec6d6cf 100755
--- a/tools/bsd-setup.sh
+++ b/tools/bsd-setup.sh
@@ -58,6 +58,12 @@ ADDITIONAL_LIST="\
 	lua52 \
 	"
 
+# Uncomment to add PNG compression utilities used by compress-pngs:
+# ADDITIONAL_LIST="$ADDITIONAL_LIST \
+#	advancecomp \
+#	optipng \
+#	pngcrush"
+
 # Guess which package manager we will use
 PM=`which pkgin 2> /dev/null || which pkg 2> /dev/null || which pkg_add 2> /dev/null`
 
diff --git a/tools/compress-pngs.py b/tools/compress-pngs.py
new file mode 100755
index 0000000000..3b715d3589
--- /dev/null
+++ b/tools/compress-pngs.py
@@ -0,0 +1,89 @@
+#!/usr/bin/env python3
+#
+# Compress PNGs
+#
+# By Gerald Combs <gerald@wireshark.org
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+'''Run various compression and optimization utilities on one or more PNGs'''
+
+import argparse
+import concurrent.futures
+import shutil
+import subprocess
+import sys
+
+PNG_FILE_ARG = '%PNG_FILE_ARG%'
+
+def get_compressors():
+    # Add *lossless* compressors here.
+    compressors = {
+        # https://github.com/shssoichiro/oxipng
+        'oxipng': { 'args': ['--opt', 'max', '--strip', 'safe', PNG_FILE_ARG] },
+        # http://optipng.sourceforge.net/
+        'optipng': { 'args': ['-o3', '-quiet', PNG_FILE_ARG] },
+        # https://github.com/amadvance/advancecomp
+        'advpng': { 'args': ['--recompress', '--shrink-insane', PNG_FILE_ARG] },
+        # https://github.com/amadvance/advancecomp
+        'advdef': { 'args': ['--recompress', '--shrink-insane', PNG_FILE_ARG] },
+        # https://pmt.sourceforge.io/pngcrush/
+        'pngcrush': { 'args': ['-q', '-ow', '-brute', '-reduce', '-noforce', PNG_FILE_ARG, 'pngcrush.$$$$.png'] },
+        # https://github.com/fhanau/Efficient-Compression-Tool
+        'ect': { 'args': ['-5', '--mt-deflate', '--mt-file', '-strip', PNG_FILE_ARG]}
+    }
+    for compressor in compressors:
+        compressor_path = shutil.which(compressor)
+        if compressor_path:
+            compressors[compressor]['path'] = compressor_path
+    return compressors
+
+
+def compress_png(png_file, compressors):
+    for compressor in compressors:
+        if not compressors[compressor].get('path', False):
+            next
+
+        args = compressors[compressor]['args']
+        args = [arg.replace(PNG_FILE_ARG, png_file) for arg in args]
+
+        try:
+            compress_proc = subprocess.run([compressor] + args)
+        except Exception:
+            print('{} returned {}:'.format(compressor, compress_proc.returncode))
+
+
+def main():
+    parser = argparse.ArgumentParser(description='Compress PNGs')
+    parser.add_argument('--list', action='store_true',
+                        help='List available compressors')
+    parser.add_argument('png_files', nargs='+', metavar='png file', help='Files to compress')
+    args = parser.parse_args()
+
+    compressors = get_compressors()
+
+    c_count = 0
+    for compressor in compressors:
+        if 'path' in compressors[compressor]:
+            c_count += 1
+
+    if c_count < 1:
+        sys.stderr.write('No compressors found\n')
+        sys.exit(1)
+
+    if args.list:
+        for compressor in compressors:
+            path = compressors[compressor].get('path', 'Not found')
+            print('{}: {}'.format(compressor, path))
+        sys.exit(0)
+
+    with concurrent.futures.ProcessPoolExecutor() as executor:
+        futures = []
+        for png_file in args.png_files:
+            print('Compressing {}'.format(png_file))
+            futures.append(executor.submit(compress_png, png_file, compressors))
+        concurrent.futures.wait(futures)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/tools/compress-pngs.sh b/tools/compress-pngs.sh
deleted file mode 100755
index 339629bac2..0000000000
--- a/tools/compress-pngs.sh
+++ /dev/null
@@ -1,46 +0,0 @@
-#!/bin/bash
-#
-# compress-pngs.sh
-# Run various compression and optimization utilities on one or more PNGs
-#
-# Wireshark - Network traffic analyzer
-# By Gerald Combs <gerald@wireshark.org>
-# Copyright 2013 Gerald Combs
-#
-# SPDX-License-Identifier: GPL-2.0-or-later
-#
-
-while getopts h OPTCHAR
-do
-    case $OPTCHAR in
-    h|?)
-        echo "Usage: compress-pngs.sh file1.png [file2.png] ..." 1>&1
-        exit 0
-        ;;
-    esac
-done
-
-# Other utilities:
-# PNGOUT (http://advsys.net/ken/utils.htm). Closed source.
-# pngquant (https://pngquant.org/). Lossy.
-
-JOBS=8
-PNG_FILES=$(printf "%q " "$@")
-export PNG_FILES
-(
-    cat <<"FIN"
-
-all: $(PNG_FILES)
-
-$(PNG_FILES): FORCE
-	@echo Compressing $@
-	@hash oxipng   2>/dev/null && oxipng --opt 4 --strip safe "$@"
-	@hash optipng  2>/dev/null && optipng -o3 -quiet "$@"
-	@hash advpng   2>/dev/null && advpng --recompress --shrink-insane "$@"
-	@hash advdef   2>/dev/null && advdef --recompress --shrink-insane "$@"
-	@hash pngcrush 2>/dev/null && pngcrush -q -ow -brute -reduce -noforce "$@" pngout.$$$$.png
-
-FORCE:
-FIN
-
-) | make -j $JOBS -f -
diff --git a/tools/debian-setup.sh b/tools/debian-setup.sh
index f810ab9bb3..656c0e4808 100755
--- a/tools/debian-setup.sh
+++ b/tools/debian-setup.sh
@@ -89,6 +89,12 @@ ADDITIONAL_LIST="libnl-3-dev \
 	xsltproc \
 	libspeexdsp-dev"
 
+# Uncomment to add PNG compression utilities used by compress-pngs:
+# ADDITIONAL_LIST="$ADDITIONAL_LIST \
+#	advancecomp \
+#	optipng \
+#	pngcrush"
+
 DEBDEPS_LIST="debhelper \
 	dh-python \
 	docbook-xml \
diff --git a/tools/macos-setup-brew.sh b/tools/macos-setup-brew.sh
index 001177ddb2..5b084f37a9 100755
--- a/tools/macos-setup-brew.sh
+++ b/tools/macos-setup-brew.sh
@@ -19,6 +19,9 @@ brew install sparkle opus c-ares glib libgcrypt gnutls lua@5.1 cmake python nght
 # Uncomment to enable automatic updates using Sparkle
 # brew cask install sparkle
 
+# Uncomment to add PNG compression utilities used by compress-pngs:
+# brew install advancecomp optipng oxipng pngcrush
+
 brew doctor
 
 exit 0
diff --git a/tools/rpm-setup.sh b/tools/rpm-setup.sh
index e2ecaf306f..ce88eef0b1 100755
--- a/tools/rpm-setup.sh
+++ b/tools/rpm-setup.sh
@@ -56,7 +56,7 @@ BASIC_LIST="cmake \
 	glib2-devel \
 	libpcap-devel \
 	zlib-devel \
-	libgcrypt-devel" 
+	libgcrypt-devel"
 
 ADDITIONAL_LIST="libcap-devel \
 	libssh-devel \
@@ -69,6 +69,13 @@ ADDITIONAL_LIST="libcap-devel \
 	spandsp-devel \
 	systemd-devel"
 
+# Uncomment to add PNG compression utilities used by compress-pngs:
+# ADDITIONAL_LIST="$ADDITIONAL_LIST \
+#	advancecomp \
+#	optipng \
+#	oxipng \
+#	pngcrush"
+
 RPMDEPS_LIST="rpm-build"
 
 # Guess which package manager we will use