diff --git a/ditaa/src/main/java/org/asciidoctor/diagram/ditaa/Ditaa.java b/ditaa/src/main/java/org/asciidoctor/diagram/ditaa/Ditaa.java
index 4a3d230..abeb1b9 100644
--- a/ditaa/src/main/java/org/asciidoctor/diagram/ditaa/Ditaa.java
+++ b/ditaa/src/main/java/org/asciidoctor/diagram/ditaa/Ditaa.java
@@ -16,18 +16,12 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 
-public class Ditaa implements DiagramGenerator
+public class Ditaa implements DiagramGeneratorFunction
 {
     public static final MimeType DEFAULT_OUTPUT_FORMAT = MimeType.PNG;
     public static final MimeType DEFAULT_CONTENT_TYPE = MimeType.TEXT_PLAIN_UTF8;
     public static final String DEFAULT_CHARSET = "UTF-8";
 
-    @Override
-    public String getName()
-    {
-        return "ditaa";
-    }
-
     @Override
     public ResponseData generate(Request request) throws IOException {
         MimeType format = request.headers.getValue(HTTPHeader.ACCEPT);
diff --git a/ditaa/src/main/java/org/asciidoctor/diagram/ditaa/DitaaDiagramGenerator.java b/ditaa/src/main/java/org/asciidoctor/diagram/ditaa/DitaaDiagramGenerator.java
new file mode 100644
index 0000000..c56fd9c
--- /dev/null
+++ b/ditaa/src/main/java/org/asciidoctor/diagram/ditaa/DitaaDiagramGenerator.java
@@ -0,0 +1,15 @@
+package org.asciidoctor.diagram.ditaa;
+
+import org.asciidoctor.diagram.DiagramGeneratorFunction;
+import org.asciidoctor.diagram.LazyDiagramGenerator;
+
+public class DitaaDiagramGenerator extends LazyDiagramGenerator {
+    public DitaaDiagramGenerator() {
+        super("ditaa");
+    }
+
+    @Override
+    protected DiagramGeneratorFunction createGenerator() throws Exception {
+        return new Ditaa();
+    }
+}
diff --git a/ditaa/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator b/ditaa/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
deleted file mode 100644
index 5572950..0000000
--- a/ditaa/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
+++ /dev/null
@@ -1 +0,0 @@
-org.asciidoctor.diagram.ditaa.Ditaa
\ No newline at end of file
diff --git a/ditaa/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction b/ditaa/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
new file mode 100644
index 0000000..ac70be7
--- /dev/null
+++ b/ditaa/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
@@ -0,0 +1 @@
+org.asciidoctor.diagram.ditaa.DitaaDiagramGenerator
\ No newline at end of file
diff --git a/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUML.java b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUML.java
index f005cc5..6b27af7 100644
--- a/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUML.java
+++ b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUML.java
@@ -17,7 +17,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
-public class PlantUML implements DiagramGenerator
+public class PlantUML implements DiagramGeneratorFunction
 {
     public static final String X_GRAPHVIZ = "X-Graphviz";
     public static final String X_PLANT_UML_CONFIG = "X-PlantUML-Config";
@@ -80,12 +80,6 @@ public class PlantUML implements DiagramGenerator
         }
     }
 
-    @Override
-    public String getName()
-    {
-        return "plantuml";
-    }
-
     @Override
     public ResponseData generate(Request request) throws IOException {
         File graphviz;
diff --git a/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLDiagramGenerator.java b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLDiagramGenerator.java
new file mode 100644
index 0000000..d28fd65
--- /dev/null
+++ b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLDiagramGenerator.java
@@ -0,0 +1,15 @@
+package org.asciidoctor.diagram.plantuml;
+
+import org.asciidoctor.diagram.DiagramGeneratorFunction;
+import org.asciidoctor.diagram.LazyDiagramGenerator;
+
+public class PlantUMLDiagramGenerator extends LazyDiagramGenerator {
+    public PlantUMLDiagramGenerator() {
+        super("plantuml");
+    }
+
+    @Override
+    protected DiagramGeneratorFunction createGenerator() throws Exception {
+        return new PlantUML();
+    }
+}
diff --git a/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLPreprocessor.java b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLPreprocessor.java
index 784d417..283a912 100644
--- a/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLPreprocessor.java
+++ b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLPreprocessor.java
@@ -17,16 +17,10 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
-public class PlantUMLPreprocessor implements DiagramGenerator
+public class PlantUMLPreprocessor implements DiagramGeneratorFunction
 {
     private static final MimeType DEFAULT_OUTPUT_FORMAT = MimeType.TEXT_PLAIN_UTF8;
 
-    @Override
-    public String getName()
-    {
-        return "plantumlpreprocessor";
-    }
-
     @Override
     public ResponseData generate(Request request) throws IOException {
         MimeType format = request.headers.getValue(HTTPHeader.ACCEPT);
diff --git a/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLPreprocessorDiagramGenerator.java b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLPreprocessorDiagramGenerator.java
new file mode 100644
index 0000000..44aca52
--- /dev/null
+++ b/plantuml/src/main/java/org/asciidoctor/diagram/plantuml/PlantUMLPreprocessorDiagramGenerator.java
@@ -0,0 +1,15 @@
+package org.asciidoctor.diagram.plantuml;
+
+import org.asciidoctor.diagram.DiagramGeneratorFunction;
+import org.asciidoctor.diagram.LazyDiagramGenerator;
+
+public class PlantUMLPreprocessorDiagramGenerator extends LazyDiagramGenerator {
+    public PlantUMLPreprocessorDiagramGenerator() {
+        super("plantumlpreprocessor");
+    }
+
+    @Override
+    protected DiagramGeneratorFunction createGenerator() throws Exception {
+        return new PlantUMLPreprocessorDiagramGenerator();
+    }
+}
diff --git a/plantuml/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator b/plantuml/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
deleted file mode 100644
index 01856fb..0000000
--- a/plantuml/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
+++ /dev/null
@@ -1,2 +0,0 @@
-org.asciidoctor.diagram.plantuml.PlantUML
-org.asciidoctor.diagram.plantuml.PlantUMLPreprocessor
\ No newline at end of file
diff --git a/plantuml/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction b/plantuml/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
new file mode 100644
index 0000000..5c4bf27
--- /dev/null
+++ b/plantuml/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
@@ -0,0 +1,2 @@
+org.asciidoctor.diagram.plantuml.PlantUMLDiagramGenerator
+org.asciidoctor.diagram.plantuml.PlantUMLPreprocessorDiagramGenerator
\ No newline at end of file
diff --git a/server/src/main/java/org/asciidoctor/diagram/DiagramGenerator.java b/server/src/main/java/org/asciidoctor/diagram/DiagramGenerator.java
index 8be9102..8c3e562 100644
--- a/server/src/main/java/org/asciidoctor/diagram/DiagramGenerator.java
+++ b/server/src/main/java/org/asciidoctor/diagram/DiagramGenerator.java
@@ -1,9 +1,5 @@
 package org.asciidoctor.diagram;
 
-import java.io.IOException;
-
-public interface DiagramGenerator {
+public interface DiagramGenerator extends DiagramGeneratorFunction {
     String getName();
-
-    ResponseData generate(Request request) throws IOException;
 }
diff --git a/server/src/main/java/org/asciidoctor/diagram/DiagramGeneratorFunction.java b/server/src/main/java/org/asciidoctor/diagram/DiagramGeneratorFunction.java
new file mode 100644
index 0000000..fe4c1e7
--- /dev/null
+++ b/server/src/main/java/org/asciidoctor/diagram/DiagramGeneratorFunction.java
@@ -0,0 +1,7 @@
+package org.asciidoctor.diagram;
+
+import java.io.IOException;
+
+public interface DiagramGeneratorFunction {
+    ResponseData generate(Request request) throws IOException;
+}
diff --git a/server/src/main/java/org/asciidoctor/diagram/LazyDiagramGenerator.java b/server/src/main/java/org/asciidoctor/diagram/LazyDiagramGenerator.java
new file mode 100644
index 0000000..8afa87e
--- /dev/null
+++ b/server/src/main/java/org/asciidoctor/diagram/LazyDiagramGenerator.java
@@ -0,0 +1,36 @@
+package org.asciidoctor.diagram;
+
+import java.io.IOException;
+
+public abstract class LazyDiagramGenerator implements DiagramGenerator {
+    private final String name;
+    private DiagramGeneratorFunction diagramGeneratorFunction;
+    private IOException loadError;
+
+    public LazyDiagramGenerator(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    protected abstract DiagramGeneratorFunction createGenerator() throws Exception;
+
+    public ResponseData generate(Request request) throws IOException {
+        if (loadError != null) {
+            throw loadError;
+        }
+
+        if (diagramGeneratorFunction == null) {
+            try {
+                diagramGeneratorFunction = createGenerator();
+            } catch (Exception e) {
+                loadError = new IOException(getName() + " is could not be initialised", e);
+                throw loadError;
+            }
+        }
+
+        return diagramGeneratorFunction.generate(request);
+    }
+}
diff --git a/server/src/test/java/org/asciidoctor/diagram/SocketCommandServerTest.java b/server/src/test/java/org/asciidoctor/diagram/SocketCommandServerTest.java
index d60a476..504900f 100644
--- a/server/src/test/java/org/asciidoctor/diagram/SocketCommandServerTest.java
+++ b/server/src/test/java/org/asciidoctor/diagram/SocketCommandServerTest.java
@@ -17,7 +17,7 @@ public class SocketCommandServerTest {
     public void testHTTPMessage() throws IOException {
         ServerSocket serverSocket = new ServerSocket(0);
         TestGenerator generator = new TestGenerator();
-        Map<String, DiagramGenerator> generators = new HashMap<>();
+        Map<String, DiagramGeneratorFunction> generators = new HashMap<>();
         generators.put(generator.getName(), generator);
         final SocketCommandServer server = new SocketCommandServer(serverSocket, generators);
 
@@ -62,7 +62,7 @@ public void run() {
     public void testHTTPError() throws IOException {
         ServerSocket serverSocket = new ServerSocket(0);
         TestGenerator generator = new TestGenerator();
-        Map<String, DiagramGenerator> generators = new HashMap<>();
+        Map<String, DiagramGeneratorFunction> generators = new HashMap<>();
         generators.put(generator.getName(), generator);
         final SocketCommandServer server = new SocketCommandServer(serverSocket, generators);
 
@@ -103,7 +103,7 @@ public void run() {
         assertEquals(MimeType.JSON_UTF8, response.headers.getValue(HTTPHeader.CONTENT_TYPE));
     }
 
-    private static class TestGenerator implements DiagramGenerator
+    private static class TestGenerator implements DiagramGeneratorFunction
     {
         @Override
         public String getName()
diff --git a/structurizr/src/main/java/org/asciidoctor/diagram/structurizr/Structurizr.java b/structurizr/src/main/java/org/asciidoctor/diagram/structurizr/Structurizr.java
index 0b346ad..1ca3792 100644
--- a/structurizr/src/main/java/org/asciidoctor/diagram/structurizr/Structurizr.java
+++ b/structurizr/src/main/java/org/asciidoctor/diagram/structurizr/Structurizr.java
@@ -24,7 +24,7 @@
 import java.util.List;
 import java.util.stream.Stream;
 
-public class Structurizr implements DiagramGenerator {
+public class Structurizr implements DiagramGeneratorFunction {
     @FunctionalInterface
     interface ParseDsl {
         void parse(StructurizrDslParser parser, String dsl, File file) throws StructurizrDslParserException;
@@ -93,12 +93,6 @@ static ParseDsl createParseDsl() {
 
     private static final MimeType DEFAULT_OUTPUT_FORMAT = PLANTUML;
 
-    @Override
-    public String getName() {
-        return "structurizr";
-    }
-
-    @Override
     public ResponseData generate(Request request) throws IOException {
         MimeType format = request.headers.getValue(HTTPHeader.ACCEPT);
 
diff --git a/structurizr/src/main/java/org/asciidoctor/diagram/structurizr/StructurizrDiagramGenerator.java b/structurizr/src/main/java/org/asciidoctor/diagram/structurizr/StructurizrDiagramGenerator.java
new file mode 100644
index 0000000..2e482e3
--- /dev/null
+++ b/structurizr/src/main/java/org/asciidoctor/diagram/structurizr/StructurizrDiagramGenerator.java
@@ -0,0 +1,15 @@
+package org.asciidoctor.diagram.structurizr;
+
+import org.asciidoctor.diagram.DiagramGeneratorFunction;
+import org.asciidoctor.diagram.LazyDiagramGenerator;
+
+public class StructurizrDiagramGenerator extends LazyDiagramGenerator {
+    public StructurizrDiagramGenerator() {
+        super("structurizr");
+    }
+
+    @Override
+    protected DiagramGeneratorFunction createGenerator() throws Exception {
+        return new Structurizr();
+    }
+}
diff --git a/structurizr/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator b/structurizr/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
deleted file mode 100644
index 3a76b75..0000000
--- a/structurizr/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
+++ /dev/null
@@ -1 +0,0 @@
-org.asciidoctor.diagram.structurizr.Structurizr
\ No newline at end of file
diff --git a/structurizr/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction b/structurizr/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
new file mode 100644
index 0000000..9f208f7
--- /dev/null
+++ b/structurizr/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
@@ -0,0 +1 @@
+org.asciidoctor.diagram.structurizr.StructurizrDiagramGenerator
\ No newline at end of file
diff --git a/syntrax/src/main/java/org/asciidoctor/diagram/syntrax/Syntrax.java b/syntrax/src/main/java/org/asciidoctor/diagram/syntrax/Syntrax.java
index fb80cc1..e214214 100644
--- a/syntrax/src/main/java/org/asciidoctor/diagram/syntrax/Syntrax.java
+++ b/syntrax/src/main/java/org/asciidoctor/diagram/syntrax/Syntrax.java
@@ -13,14 +13,9 @@
 import static org.atpfivt.jsyntrax.Main.generateSVG;
 import static org.atpfivt.jsyntrax.Main.getStyleConfig;
 
-public class Syntrax implements DiagramGenerator {
+public class Syntrax implements DiagramGeneratorFunction {
     public static final MimeType DEFAULT_OUTPUT_FORMAT = MimeType.SVG;
 
-    @Override
-    public String getName() {
-        return "syntrax";
-    }
-
     @Override
     public ResponseData generate(Request request) throws IOException {
         MimeType format = request.headers.getValue(HTTPHeader.ACCEPT);
diff --git a/syntrax/src/main/java/org/asciidoctor/diagram/syntrax/SyntraxDiagramGenerator.java b/syntrax/src/main/java/org/asciidoctor/diagram/syntrax/SyntraxDiagramGenerator.java
new file mode 100644
index 0000000..1ac2b63
--- /dev/null
+++ b/syntrax/src/main/java/org/asciidoctor/diagram/syntrax/SyntraxDiagramGenerator.java
@@ -0,0 +1,15 @@
+package org.asciidoctor.diagram.syntrax;
+
+import org.asciidoctor.diagram.DiagramGeneratorFunction;
+import org.asciidoctor.diagram.LazyDiagramGenerator;
+
+public class SyntraxDiagramGenerator extends LazyDiagramGenerator {
+    public SyntraxDiagramGenerator() {
+        super("syntrax");
+    }
+
+    @Override
+    protected DiagramGeneratorFunction createGenerator() throws Exception {
+        return new Syntrax();
+    }
+}
diff --git a/syntrax/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator b/syntrax/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
deleted file mode 100644
index d8245a1..0000000
--- a/syntrax/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGenerator
+++ /dev/null
@@ -1 +0,0 @@
-org.asciidoctor.diagram.syntrax.Syntrax
\ No newline at end of file
diff --git a/syntrax/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction b/syntrax/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
new file mode 100644
index 0000000..2791e98
--- /dev/null
+++ b/syntrax/src/main/resources/META-INF/services/org.asciidoctor.diagram.DiagramGeneratorFunction
@@ -0,0 +1 @@
+org.asciidoctor.diagram.syntrax.SyntraxDiagramGenerator
\ No newline at end of file