diff --git a/doc/conf.py b/doc/conf.py
index effd7997..35451be2 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -149,7 +149,7 @@ html_theme_options = {
 html_title = "PyPSA-Eur"
 
 # A shorter title for the navigation bar.  Default is the same as html_title.
-# html_short_title = None
+html_short_title = "PyPSA-Eur"
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.
diff --git a/doc/index.rst b/doc/index.rst
index 4f55c14b..00a57464 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -53,7 +53,7 @@ resolved spatial scale enables a proper description of the long-range smoothing
 effects for renewable power generation and their varying resource availability.
 
 .. image:: img/elec.png
-    :width: 50%
+    :width: 70%
     :align: center
 
 The restriction to freely available and open data encourages the open exchange
@@ -99,6 +99,8 @@ This diagram gives an overview of the sectors and the links between
 them:
 
 .. image:: ../graphics/multisector_figure.png
+    :width: 70%
+    :align: center
 
 The sector-coupled extension of PyPSA-Eur (previously PyPSA-Eur-Sec) was
 initially described in the paper `Synergies of sector coupling and transmission
diff --git a/graphics/workflow.png b/graphics/workflow.png
index ca3e4e29..f60f3462 100644
Binary files a/graphics/workflow.png and b/graphics/workflow.png differ