diff --git a/run-webasm.sh b/run-webasm.sh
new file mode 100755
index 0000000..a5751d8
--- /dev/null
+++ b/run-webasm.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+
+#
+# This script builds "Add Times" for webasm in release mode.
+#
+# See https://github.com/Akaflieg-Freiburg/addhoursandminutes/wiki/Build-scripts
+#
+
+
+#
+# Copyright © 2020-2021 Stefan Kebekus <stefan.kebekus@math.uni-freiburg.de>
+#
+# 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 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+
+
+#
+# Fail on first error
+#
+
+set -e
+
+
+#
+# Clean up
+#
+
+rm -rf build-webasm-release
+mkdir -p build-webasm-release
+cd build-webasm-release
+
+#
+# Setup paths
+#
+
+. $EMSDK/emsdk_env.sh
+
+#
+# Configure
+#
+
+$Qt6_DIR_WASM/bin/qt-cmake .. -GNinja
+
+#
+# Build the executable
+#
+
+ninja
+# GitHub pages does not support SVG, so we need to include a PNG here
+rsvg-convert --width=200 --height=200 ../metadata/de.akaflieg_freiburg.cavok.add_hours_and_minutes.svg -o src/qtlogo.png
+sed -i 's/qtlogo.svg/qtlogo.png/g' src/addhoursandminutes.html
+sed -i 's/320/200/g' src/addhoursandminutes.html
+
+
+#
+# Test-run the compiled program
+#
+
+emrun --browser=firefox src/addhoursandminutes.html