Index: /trunk/macosx/JOSM.app/Contents/Info.plist_template.xml
===================================================================
--- /trunk/macosx/JOSM.app/Contents/Info.plist_template.xml	(revision 15549)
+++ /trunk/macosx/JOSM.app/Contents/Info.plist_template.xml	(revision 15550)
@@ -53,4 +53,26 @@
         </dict>
     </dict>
+    <!-- Export GeoJSON file format UTI (*.geojson) -->
+    <dict>
+        <key>UTTypeIdentifier</key>
+        <string>public.geojson</string>
+        <key>UTTypeDescription</key>
+        <string>GeoJSON File</string>
+        <key>UTTypeIconFile</key>
+        <string>JOSM.icns</string>
+        <key>UTTypeConformsTo</key>
+        <array>
+            <string>public.json</string>
+        </array>
+        <key>UTTypeTagSpecification</key>
+        <dict>
+            <key>com.apple.ostype</key>
+            <string>GeoJSON</string>
+            <key>public.filename-extension</key>
+            <array>
+                <string>geojson</string>
+            </array>
+        </dict>
+    </dict>
 </array>
 <key>UTImportedTypeDeclarations</key>
@@ -141,4 +163,19 @@
         </array>
     </dict>
+    <!-- Registers opening *.geojson files -->
+    <dict>
+        <key>CFBundleTypeIconFile</key>
+        <string>JOSM.icns</string>
+        <key>CFBundleTypeName</key>
+        <string>GeoJSON Files</string>
+        <key>CFBundleTypeRole</key>
+        <string>Editor</string>
+        <key>LSHandlerRank</key>
+        <string>Owner</string>
+        <key>LSItemContentTypes</key>
+        <array>
+            <string>public.geojson</string>
+        </array>
+    </dict>
     <!-- Registers opening *.gpx files -->
     <dict>