diff --git a/doc/conf.py b/doc/conf.py
index 12b61a268..ac4db0b94 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -32,7 +32,11 @@ sys.path.insert(0, os.path.abspath('.'))
 # ones.
 extensions = ['breathe', 'sphinx.ext.graphviz']
 
-graphviz_output_format='svg'
+graphviz_output_format='png'
+graphviz_dot_args=[
+   '-Nfontname="verdana"',
+   '-Gfontname="verdana"',
+   '-Efontname="verdana"']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -174,7 +178,7 @@ html_context = {
 #
 # html_theme_options = {}
 
-html_logo = 'images/ACRN_Logo_300w.png'
+html_logo = 'images/ACRN_Logo_200w.png'
 html_favicon = 'images/ACRN-favicon-32x32.png'
 
 numfig = True
diff --git a/doc/images/ACRN_Logo_200w.png b/doc/images/ACRN_Logo_200w.png
new file mode 100644
index 000000000..16ed1d565
Binary files /dev/null and b/doc/images/ACRN_Logo_200w.png differ
diff --git a/doc/introduction/images/boot-flow.dot b/doc/introduction/images/boot-flow.dot
new file mode 100644
index 000000000..d65c82a50
--- /dev/null
+++ b/doc/introduction/images/boot-flow.dot
@@ -0,0 +1,6 @@
+digraph G {
+   rankdir=LR;
+   bgcolor="transparent";
+   UEFI -> "acrn.efi" -> "OS\nBootloader" ->
+     "SOS\nKernel" -> "ACRN\nDevice Model" -> "Virtual\nBootloader";
+}
diff --git a/doc/introduction/index.rst b/doc/introduction/index.rst
index 31e8f221e..6c4c9e1c4 100644
--- a/doc/introduction/index.rst
+++ b/doc/introduction/index.rst
@@ -140,11 +140,10 @@ Boot Sequence
 In :numref:`boot-flow` we show a verified Boot Sequence with UEFI
 on an Intel |reg| Architecture platform NUC (see :ref:`hardware`).
 
-.. figure:: images/boot-flow.png
-   :align: center
+.. graphviz:: images/boot-flow.dot
    :name: boot-flow
-
-   ACRN Hypervisor Boot Flow
+   :align: center
+   :caption: ACRN Hypervisor Boot Flow
 
 The Boot process proceeds as follows: