diff --git a/recipes/admin.py b/recipes/admin.py
index 1542b98..7ffb902 100644
--- a/recipes/admin.py
+++ b/recipes/admin.py
@@ -1,3 +1,22 @@
+"""
+Barn Web App - A collection of web-apps for my family's personal use,
+including a recipe database.
+Copyright © 2023 Benjamin Stadlbauer
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+General Public License for more details.
+
+This program comes with a copy of the GNU Affero General Public License
+file at the root of this project.
+"""
+
 from django.contrib import admin
 from .models import Recipe, Version, Ingredient
 
diff --git a/recipes/apps.py b/recipes/apps.py
index 1d53980..0ed261f 100644
--- a/recipes/apps.py
+++ b/recipes/apps.py
@@ -1,3 +1,22 @@
+"""
+Barn Web App - A collection of web-apps for my family's personal use,
+including a recipe database.
+Copyright © 2023 Benjamin Stadlbauer
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+General Public License for more details.
+
+This program comes with a copy of the GNU Affero General Public License
+file at the root of this project.
+"""
+
 from django.apps import AppConfig
 
 
diff --git a/recipes/forms.py b/recipes/forms.py
index f02cf4d..e410308 100644
--- a/recipes/forms.py
+++ b/recipes/forms.py
@@ -1,3 +1,22 @@
+"""
+Barn Web App - A collection of web-apps for my family's personal use,
+including a recipe database.
+Copyright © 2023 Benjamin Stadlbauer
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+General Public License for more details.
+
+This program comes with a copy of the GNU Affero General Public License
+file at the root of this project.
+"""
+
 from django.forms import ModelForm, ValidationError, modelformset_factory, BooleanField
 from .models import Recipe, Version, Ingredient
 
diff --git a/recipes/models.py b/recipes/models.py
index 80a66ad..bb9728f 100644
--- a/recipes/models.py
+++ b/recipes/models.py
@@ -1,3 +1,22 @@
+"""
+Barn Web App - A collection of web-apps for my family's personal use,
+including a recipe database.
+Copyright © 2023 Benjamin Stadlbauer
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+General Public License for more details.
+
+This program comes with a copy of the GNU Affero General Public License
+file at the root of this project.
+"""
+
 from django.db import models
 from django.contrib.auth.models import User
 from django.urls import reverse
diff --git a/recipes/templates/add-recipe.html b/recipes/templates/add-recipe.html
index bd8968c..b1f2878 100644
--- a/recipes/templates/add-recipe.html
+++ b/recipes/templates/add-recipe.html
@@ -1,3 +1,21 @@
+<!--
+	Barn Web App - A collection of web-apps for my family's personal use,
+	including a recipe database.
+	Copyright © 2023 Benjamin Stadlbauer
+
+	This program is free software: you can redistribute it and/or modify it
+	under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or (at
+	your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but
+	WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+	General Public License for more details.
+
+	This program comes with a copy of the GNU Affero General Public License
+	file at the root of this project.
+-->
 {% extends "base_main.html" %}
 {% block title %}{{ recipe.title }}{% endblock %}
 {% block main %}
diff --git a/recipes/templates/add-version.html b/recipes/templates/add-version.html
index e67d86b..460800c 100644
--- a/recipes/templates/add-version.html
+++ b/recipes/templates/add-version.html
@@ -1,3 +1,21 @@
+<!--
+	Barn Web App - A collection of web-apps for my family's personal use,
+	including a recipe database.
+	Copyright © 2023 Benjamin Stadlbauer
+
+	This program is free software: you can redistribute it and/or modify it
+	under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or (at
+	your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but
+	WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+	General Public License for more details.
+
+	This program comes with a copy of the GNU Affero General Public License
+	file at the root of this project.
+-->
 {% extends "base_main.html" %}
 {% block title %}{{ recipe.title }}{% endblock %}
 {% block main %}
diff --git a/recipes/templates/edit-recipe.html b/recipes/templates/edit-recipe.html
index 09bc18e..c336fb8 100644
--- a/recipes/templates/edit-recipe.html
+++ b/recipes/templates/edit-recipe.html
@@ -1,3 +1,21 @@
+<!--
+	Barn Web App - A collection of web-apps for my family's personal use,
+	including a recipe database.
+	Copyright © 2023 Benjamin Stadlbauer
+
+	This program is free software: you can redistribute it and/or modify it
+	under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or (at
+	your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but
+	WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+	General Public License for more details.
+
+	This program comes with a copy of the GNU Affero General Public License
+	file at the root of this project.
+-->
 {% extends "base_main.html" %}
 {% block title %}{{ recipe.title }}{% endblock %}
 {% block main %}
diff --git a/recipes/templates/edit-version.html b/recipes/templates/edit-version.html
index e3fa642..debe29d 100644
--- a/recipes/templates/edit-version.html
+++ b/recipes/templates/edit-version.html
@@ -1,3 +1,21 @@
+<!--
+	Barn Web App - A collection of web-apps for my family's personal use,
+	including a recipe database.
+	Copyright © 2023 Benjamin Stadlbauer
+
+	This program is free software: you can redistribute it and/or modify it
+	under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or (at
+	your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but
+	WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+	General Public License for more details.
+
+	This program comes with a copy of the GNU Affero General Public License
+	file at the root of this project.
+-->
 {% extends "base_main.html" %}
 {% block title %}{{ recipe.title }}{% endblock %}
 {% block main %}
diff --git a/recipes/templates/recipe.html b/recipes/templates/recipe.html
index 08d20d9..2556216 100644
--- a/recipes/templates/recipe.html
+++ b/recipes/templates/recipe.html
@@ -1,3 +1,21 @@
+<!--
+	Barn Web App - A collection of web-apps for my family's personal use,
+	including a recipe database.
+	Copyright © 2023 Benjamin Stadlbauer
+
+	This program is free software: you can redistribute it and/or modify it
+	under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or (at
+	your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but
+	WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+	General Public License for more details.
+
+	This program comes with a copy of the GNU Affero General Public License
+	file at the root of this project.
+-->
 {% extends "base_main.html" %}
 {% block title %}{{ recipe.title }}{% endblock %}
 {% block main %}
diff --git a/recipes/templates/recipes.html b/recipes/templates/recipes.html
index faee634..97bed13 100644
--- a/recipes/templates/recipes.html
+++ b/recipes/templates/recipes.html
@@ -1,3 +1,21 @@
+<!--
+	Barn Web App - A collection of web-apps for my family's personal use,
+	including a recipe database.
+	Copyright © 2023 Benjamin Stadlbauer
+
+	This program is free software: you can redistribute it and/or modify it
+	under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or (at
+	your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but
+	WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+	General Public License for more details.
+
+	This program comes with a copy of the GNU Affero General Public License
+	file at the root of this project.
+-->
 {% extends "base_main.html" %}
 {% block title %}Recipes{% endblock %}
 {% block main %}
diff --git a/recipes/templates/version.html b/recipes/templates/version.html
index 00ad0ff..acdb362 100644
--- a/recipes/templates/version.html
+++ b/recipes/templates/version.html
@@ -1,3 +1,21 @@
+<!--
+	Barn Web App - A collection of web-apps for my family's personal use,
+	including a recipe database.
+	Copyright © 2023 Benjamin Stadlbauer
+
+	This program is free software: you can redistribute it and/or modify it
+	under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or (at
+	your option) any later version.
+
+	This program is distributed in the hope that it will be useful, but
+	WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+	General Public License for more details.
+
+	This program comes with a copy of the GNU Affero General Public License
+	file at the root of this project.
+-->
 {% extends "base_main.html" %}
 {% block title %}{{ recipe.title }}{% endblock %}
 {% block main %}
diff --git a/recipes/tests.py b/recipes/tests.py
index 7ce503c..055fc05 100644
--- a/recipes/tests.py
+++ b/recipes/tests.py
@@ -1,3 +1,22 @@
+"""
+Barn Web App - A collection of web-apps for my family's personal use,
+including a recipe database.
+Copyright © 2023 Benjamin Stadlbauer
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+General Public License for more details.
+
+This program comes with a copy of the GNU Affero General Public License
+file at the root of this project.
+"""
+
 from django.test import TestCase
 
 # Create your tests here.
diff --git a/recipes/urls.py b/recipes/urls.py
index 5c7a33f..3561232 100644
--- a/recipes/urls.py
+++ b/recipes/urls.py
@@ -1,3 +1,22 @@
+"""
+Barn Web App - A collection of web-apps for my family's personal use,
+including a recipe database.
+Copyright © 2023 Benjamin Stadlbauer
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+General Public License for more details.
+
+This program comes with a copy of the GNU Affero General Public License
+file at the root of this project.
+"""
+
 from django.urls import path
 from . import views
 
diff --git a/recipes/views.py b/recipes/views.py
index 032dd20..d7eb098 100644
--- a/recipes/views.py
+++ b/recipes/views.py
@@ -1,3 +1,22 @@
+"""
+Barn Web App - A collection of web-apps for my family's personal use,
+including a recipe database.
+Copyright © 2023 Benjamin Stadlbauer
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
+General Public License for more details.
+
+This program comes with a copy of the GNU Affero General Public License
+file at the root of this project.
+"""
+
 from django.shortcuts import render, get_object_or_404, redirect
 from .models import Recipe, Version, Ingredient
 from .forms import RecipeForm, VersionForm, IngredientFormSet