diff --git a/presentations/20260530_NewLine/MicroPythonOS_Newline_2026_v1.pdf b/presentations/20260530_NewLine/MicroPythonOS_Newline_2026_v1.pdf
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diff --git a/presentations/20260530_NewLine/pdf_to_png.sh b/presentations/20260530_NewLine/pdf_to_png.sh
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+++ b/presentations/20260530_NewLine/pdf_to_png.sh
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+pdf="$1"
+
+if [ -z "$pdf" ]; then
+	echo "Usage: $0 file.pdf"
+	exit 1
+fi
+
+# 92.903 => 1024 x 576
+# 116 => 1279 x 719
+# 116.129 => 1280 x 720
+# 150 => 827 x 465   => this was at 50% scale prolly
+# 160 => 1764 x 992
+rm -rf slides
+mkdir slides
+#convert -density 150 "$pdf" slides/slide%02d.png
+#convert -density 232 "$pdf" slides/slide%02d.png
+#convert -density 160 "$pdf" slides/slide%02d.png
+#convert -density 116 "$pdf" slides/slide%02d.png
+magick -density 116.129 "$pdf" slides/slide%02d.png
+#convert -density 92.903 "$pdf" slides/slide%02d.png
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