diff --git a/app/controllers/tools_controller.rb b/app/controllers/tools_controller.rb
new file mode 100644
index 00000000..82dab3ea
--- /dev/null
+++ b/app/controllers/tools_controller.rb
@@ -0,0 +1,18 @@
+class ToolsController < ApplicationController
+  def index; end
+
+  def combine_pdf
+    uploaded_pdf = params[:pdf_file]
+
+    if uploaded_pdf.present?
+      templated_pdf = Invoices::TemplatedPDF.new(uploaded_pdf.read).read
+
+      send_data templated_pdf,
+                filename: uploaded_pdf.original_filename,
+                type: 'application/pdf',
+                disposition: 'attachment'
+    else
+      redirect_to tools_path, alert: 'Bitte wähle eine PDF-Datei aus.'
+    end
+  end
+end
diff --git a/app/models/invoices/swiss_qr_bill_qr_code.rb b/app/models/invoices/swiss_qr_bill_qr_code.rb
index 06b7d1e1..0d019af8 100644
--- a/app/models/invoices/swiss_qr_bill_qr_code.rb
+++ b/app/models/invoices/swiss_qr_bill_qr_code.rb
@@ -12,7 +12,8 @@ def self.generate_img_data_for(invoice)
         module_px_size: 10,
         resize_exactly_to: false,
         resize_gte_to: false,
-        size: 1024
+        size: 1024,
+        level: :m
       )
 
       swiss_cross = ChunkyPNG::Image.from_file('app/assets/images/swiss_cross.png')
diff --git a/app/views/tools/index.html.erb b/app/views/tools/index.html.erb
new file mode 100644
index 00000000..96c70351
--- /dev/null
+++ b/app/views/tools/index.html.erb
@@ -0,0 +1,12 @@
+<%= define_page_title(t('.title')) %>
+
+<h4><%= t('.apply_pdf_template.title') %></h4>
+
+<%= form_with url: combine_pdf_tools_path, method: :post, multipart: true, local: true do |form| %>
+  <div class="form-group">
+    <%= form.label :pdf_file, t('.apply_pdf_template.select_pdf_file') %>
+    <%= form.file_field :pdf_file, accept: 'application/pdf', required: true, class: 'form-control' %>
+  </div>
+
+  <%= form.submit t('.apply_pdf_template.submit'), class: 'btn btn-primary', data: { disable_with: false } %>
+<% end %>
diff --git a/config/bottom_navigation.rb b/config/bottom_navigation.rb
index 68a6eba1..04bc1a25 100644
--- a/config/bottom_navigation.rb
+++ b/config/bottom_navigation.rb
@@ -1,5 +1,7 @@
 SimpleNavigation::Configuration.run do |navigation|
   navigation.items do |bottom|
+    bottom.item :tools, t('application.navigation.tools'), tools_path, highlights_on: %r{\A/tools(/.*)?\z} 
+
     bottom.item :preferences, t('application.navigation.preferences'),
                               employee_hourly_rates_path(current_employee),
                               html: { class: 'sub_nav preferences' } do |sub_nav|
diff --git a/config/locales/application.de.yml b/config/locales/application.de.yml
index fcf83a0e..8f3056ea 100644
--- a/config/locales/application.de.yml
+++ b/config/locales/application.de.yml
@@ -16,3 +16,4 @@ de:
       customer_report: Kunde
       customers_report: Kunden
       other_preferences: Sonstiges
+      tools: Werkzeuge
diff --git a/config/locales/views/tools.de.yml b/config/locales/views/tools.de.yml
new file mode 100644
index 00000000..9a3c69f0
--- /dev/null
+++ b/config/locales/views/tools.de.yml
@@ -0,0 +1,8 @@
+de:
+  tools:
+    index:
+      title: Werkzeuge
+      apply_pdf_template:
+        title: "PDF mit Briefpapier kombinieren"
+        select_pdf_file: "PDF-Datei auswählen:"
+        submit: "PDF kombinieren und herunterladen"
diff --git a/config/routes.rb b/config/routes.rb
index b7e7f5c7..a5e9147a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -96,6 +96,11 @@
   resources :debtors_reports, only: [:new, :create]
   resources :versions, only: [:index]
   resources :settings, only: [:index, :update]
+  resources :tools, only: [:index] do
+    collection do
+      post :combine_pdf
+    end
+  end
 
   mount LetterOpenerWeb::Engine, at: "/letter_opener" if Rails.env.development?
 end