diff --git a/.gitignore b/.gitignore
index 16f2746..9dec299 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,5 @@
 
 __pycache__
 celerybeat-schedule
+.doit.db
+static/logotype*.png
diff --git a/media/2017-08-03-forget-logotype.kra b/assets/2017-08-03-forget-logotype.kra
similarity index 100%
rename from media/2017-08-03-forget-logotype.kra
rename to assets/2017-08-03-forget-logotype.kra
diff --git a/media/icon.svg b/assets/icon.svg
similarity index 100%
rename from media/icon.svg
rename to assets/icon.svg
diff --git a/static/logotype.png b/assets/logotype.png
similarity index 100%
rename from static/logotype.png
rename to assets/logotype.png
diff --git a/dodo.py b/dodo.py
new file mode 100644
index 0000000..b8b5fec
--- /dev/null
+++ b/dodo.py
@@ -0,0 +1,26 @@
+def task_gen_logo():
+    """generate versions of the logo in various sizes"""
+
+    from PIL import Image
+
+    widths = (200, 400, 600, 800)
+
+    def gen_logo():
+        with Image.open('assets/logotype.png') as im:
+            im = im.convert('L')
+            for width in widths:
+                height = im.height * width // im.width
+                new = im.resize((width,height), resample=Image.LANCZOS)
+                new.save('static/logotype-{}.png'.format(width))
+            im.save('static/logotype.png')
+
+    return {
+            'actions': [gen_logo],
+            'targets': [f'static/logotype-{width}.png' for width in widths]\
+                + ['static/logotype.png'],
+            'file_dep': ['assets/logotype.png'],
+        }
+
+if __name__ == '__main__':
+    import doit
+    doit.run(globals())
diff --git a/media/promo1.png b/media/promo1.png
deleted file mode 100644
index 9a5d905..0000000
Binary files a/media/promo1.png and /dev/null differ
diff --git a/media/promo2.png b/media/promo2.png
deleted file mode 100644
index 6671452..0000000
Binary files a/media/promo2.png and /dev/null differ
diff --git a/requirements.txt b/requirements.txt
index 5e343ea..cce45ae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,9 @@ billiard==3.5.0.3
 blinker==1.4
 celery==4.1.0
 click==6.7
+cloudpickle==0.4.0
 contextlib2==0.5.5
+doit==0.30.3
 Flask==0.12.2
 Flask-Limiter==0.9.5
 Flask-Migrate==2.0.4
@@ -18,7 +20,10 @@ kombu==4.1.0
 limits==1.2.1
 Mako==1.0.6
 MarkupSafe==1.0
+olefile==0.44
+Pillow==4.2.1
 psycopg2==2.7.1
+pyinotify==0.9.6
 python-dateutil==2.6.0
 python-editor==1.0.3
 pytz==2017.2
diff --git a/templates/lib/layout.html b/templates/lib/layout.html
index 3b28ef6..078c7ad 100644
--- a/templates/lib/layout.html
+++ b/templates/lib/layout.html
@@ -17,7 +17,9 @@
         <header>
             <h1>
                 <a href="{{url_for('index')}}">
-                    <img src="{{ st('logotype.png') }}" alt="Forget" width=200 />
+                    <img src="{{ st('logotype-200.png') }}" alt="Forget" width=200 srcset="{% for width in (200,400,600,800) -%}
+                    {{ st('logotype-{}.png'.format(width)) }} {{width}}w,
+                    {%- endfor %}"/>
                 </a>
             </h1>
         </header>
diff --git a/tools/post-receive.example b/tools/post-receive.example
index 648f789..e24eab7 100644
--- a/tools/post-receive.example
+++ b/tools/post-receive.example
@@ -15,6 +15,11 @@ while read old new refname; do
             pip install -r requirements.txt
             tools/write-version.sh
             FLASK_APP='forget.py' flask db upgrade
+            if [[ $(git diff --name-only ${old}..${new} dodo.py) == 'dodo.py' ]]
+            then
+                doit forget
+            fi
+            doit
         )
         systemctl --user start forget
     fi