diff --git a/app/controllers/procedures_controller.rb b/app/controllers/procedures_controller.rb
index 60fd044a0..b4037a4d8 100644
--- a/app/controllers/procedures_controller.rb
+++ b/app/controllers/procedures_controller.rb
@@ -5,7 +5,12 @@ class ProceduresController < ApplicationController
 
   def logo
     if @procedure.logo.attached?
-      redirect_to url_for(@procedure.logo.variant(:email))
+      logo_variant = @procedure.logo.variant(resize_to_limit: [400, 400])
+      if logo_variant.key.present?
+        redirect_to url_for(logo_variant.processed)
+      else
+        redirect_to url_for(@procedure.logo)
+      end
     else
       redirect_to ActionController::Base.helpers.image_url(PROCEDURE_DEFAULT_LOGO_SRC)
     end
diff --git a/app/models/attestation_template.rb b/app/models/attestation_template.rb
index 8d9fdfca4..8aba5d352 100644
--- a/app/models/attestation_template.rb
+++ b/app/models/attestation_template.rb
@@ -106,7 +106,8 @@ class AttestationTemplate < ApplicationRecord
 
   def logo_url
     if logo.attached?
-      Rails.application.routes.url_helpers.url_for(logo)
+      logo_variant = logo.variant(resize_to_limit: [400, 400])
+      logo_variant.key.present? ? logo_variant.processed.url : Rails.application.routes.url_helpers.url_for(logo)
     end
   end
 
diff --git a/app/models/concerns/blob_image_processor_concern.rb b/app/models/concerns/blob_image_processor_concern.rb
index 8a7870371..63fac2365 100644
--- a/app/models/concerns/blob_image_processor_concern.rb
+++ b/app/models/concerns/blob_image_processor_concern.rb
@@ -10,7 +10,7 @@ module BlobImageProcessorConcern
   end
 
   def representation_required?
-    from_champ? || from_messagerie?
+    from_champ? || from_messagerie? || is_a_logo?
   end
 
   private
@@ -23,6 +23,10 @@ module BlobImageProcessorConcern
     attachments.any? { _1.record.class == Commentaire }
   end
 
+  def logo?
+    attachments.any? { _1.name == 'logo' }
+  end
+
   def watermark_required?
     attachments.any? { _1.record.class == Champs::TitreIdentiteChamp }
   end
diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index ae167b266..9e8072fd4 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -176,9 +176,7 @@ class Procedure < ApplicationRecord
 
   belongs_to :defaut_groupe_instructeur, class_name: 'GroupeInstructeur', inverse_of: false, optional: true
 
-  has_one_attached :logo do |attachable|
-    attachable.variant :email, resize_to_limit: [450, 450]
-  end
+  has_one_attached :logo
   has_one_attached :notice
   has_one_attached :deliberation
 
@@ -705,7 +703,8 @@ class Procedure < ApplicationRecord
 
   def logo_url
     if logo.attached?
-      Rails.application.routes.url_helpers.url_for(logo)
+      logo_variant = logo.variant(resize_to_limit: [400, 400])
+      logo_variant.key.present? ? logo_variant.processed.url : Rails.application.routes.url_helpers.url_for(logo)
     else
       ActionController::Base.helpers.image_url(PROCEDURE_DEFAULT_LOGO_SRC)
     end