diff --git a/docs/images/literate-programming-concept.png b/docs/images/literate-programming-concept.png
index a41e5ee..6f24f23 100644
Binary files a/docs/images/literate-programming-concept.png and b/docs/images/literate-programming-concept.png differ
diff --git a/docs/images/plantuml-display-json-data-complex-example.png b/docs/images/plantuml-display-json-data-complex-example.png
index 8a35301..5b395ca 100644
Binary files a/docs/images/plantuml-display-json-data-complex-example.png and b/docs/images/plantuml-display-json-data-complex-example.png differ
diff --git a/docs/images/plantuml-display-json-data-simple-example.png b/docs/images/plantuml-display-json-data-simple-example.png
index 4ba88bf..f21d5bb 100644
Binary files a/docs/images/plantuml-display-json-data-simple-example.png and b/docs/images/plantuml-display-json-data-simple-example.png differ
diff --git a/docs/images/plantuml-display-json-data.png b/docs/images/plantuml-display-json-data.png
index ec810d8..9674f5b 100644
Binary files a/docs/images/plantuml-display-json-data.png and b/docs/images/plantuml-display-json-data.png differ
diff --git a/docs/images/plantuml-display-yaml-data-docker-example.png b/docs/images/plantuml-display-yaml-data-docker-example.png
index 9f904a9..6f308c6 100644
Binary files a/docs/images/plantuml-display-yaml-data-docker-example.png and b/docs/images/plantuml-display-yaml-data-docker-example.png differ
diff --git a/docs/images/plantuml-display-yaml-data.png b/docs/images/plantuml-display-yaml-data.png
index c0d7b6d..5b46030 100644
Binary files a/docs/images/plantuml-display-yaml-data.png and b/docs/images/plantuml-display-yaml-data.png differ
diff --git a/docs/images/plantuml-sequence-diagram.png b/docs/images/plantuml-sequence-diagram.png
index cb4397f..3f0f6d9 100644
Binary files a/docs/images/plantuml-sequence-diagram.png and b/docs/images/plantuml-sequence-diagram.png differ
diff --git a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-1.png b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-1.png
index 4d06b4a..fffc54c 100644
Binary files a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-1.png and b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-1.png differ
diff --git a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-2.png b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-2.png
index e690060..ff3d4d4 100644
Binary files a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-2.png and b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-2.png differ
diff --git a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-3.png b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-3.png
index 16b28fb..ffd49ca 100644
Binary files a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-3.png and b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-3.png differ
diff --git a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-4.png b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-4.png
index 66b37f5..b8e4183 100644
Binary files a/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-4.png and b/docs/images/thinking-in-cpp-inheritances-reusing-the-interface-4.png differ
diff --git a/docs/images/thinking-in-cpp-interchangeable-objects-1.png b/docs/images/thinking-in-cpp-interchangeable-objects-1.png
index c3d0e4f..531c135 100644
Binary files a/docs/images/thinking-in-cpp-interchangeable-objects-1.png and b/docs/images/thinking-in-cpp-interchangeable-objects-1.png differ
diff --git a/docs/images/thinking-in-cpp-reuse-the-implementation.png b/docs/images/thinking-in-cpp-reuse-the-implementation.png
index b18b0da..66602a2 100644
Binary files a/docs/images/thinking-in-cpp-reuse-the-implementation.png and b/docs/images/thinking-in-cpp-reuse-the-implementation.png differ