diff --git a/config/retrodeck/net.retrodeck.retrodeck.mime.xml b/config/retrodeck/net.retrodeck.retrodeck.mime.xml
index 9c6b7a9e..2b4266bf 100644
--- a/config/retrodeck/net.retrodeck.retrodeck.mime.xml
+++ b/config/retrodeck/net.retrodeck.retrodeck.mime.xml
@@ -1,145 +1,339 @@
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- Retro Game
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+ Retro Game
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diff --git a/developer_toolbox/mime-populator.sh b/developer_toolbox/mime-populator.sh
new file mode 100755
index 00000000..04a14ed8
--- /dev/null
+++ b/developer_toolbox/mime-populator.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+# Input files
+ES_SYSTEMS_FILE="../ES-DE/resources/systems/linux/es_systems.xml"
+MIME_FILE="config/retrodeck/net.retrodeck.retrodeck.mime.xml"
+
+# List of extensions to ignore
+IGNORED_EXTENSIONS=". .appimage cue"
+
+# Check if xmlstarlet is installed
+if ! command -v xmlstarlet &> /dev/null; then
+ echo "Error: xmlstarlet is not installed."
+ echo "Please install it using your package manager (e.g., sudo apt install xmlstarlet)."
+ exit 1
+fi
+
+# Temporary files
+EXTENSIONS_FILE=$(mktemp)
+
+# Extract extensions from the field in es_systems.xml
+grep -oP '\K.*?(?=)' "$ES_SYSTEMS_FILE" | \
+tr ' ' '\n' | \
+awk '{print tolower($0)}' | \
+sort -u > "$EXTENSIONS_FILE"
+
+# Create a new MIME file with the correct base structure
+cat > "$MIME_FILE" << EOF
+
+
+
+ Retro Game
+EOF
+
+# Add new elements to the MIME file
+while IFS= read -r ext; do
+ # Skip ignored extensions
+ if [[ "$IGNORED_EXTENSIONS" =~ (^|[[:space:]])"$ext"($|[[:space:]]) ]]; then
+ echo "Skipping ignored extension: $ext"
+ continue
+ fi
+
+ # Add the element for the extension
+ echo "Adding glob pattern for extension: $ext"
+ echo " " >> "$MIME_FILE"
+done < "$EXTENSIONS_FILE"
+
+# Close the XML tags
+echo "
+" >> "$MIME_FILE"
+
+# Ensure proper formatting using xmlstarlet
+xmlstarlet fo --indent-tab "$MIME_FILE" > "$MIME_FILE.tmp" && mv "$MIME_FILE.tmp" "$MIME_FILE"
+
+# Clean up temporary files
+rm -f "$EXTENSIONS_FILE"
+
+echo "MIME file updated successfully at $MIME_FILE"
\ No newline at end of file