diff --git a/app/helpers/documentables_helper.rb b/app/helpers/documentables_helper.rb
index ef1a2d6b9..98ce55b59 100644
--- a/app/helpers/documentables_helper.rb
+++ b/app/helpers/documentables_helper.rb
@@ -17,15 +17,11 @@ module DocumentablesHelper
   end
 
   def accepted_content_types_extensions(documentable_class)
-    documentable_class.accepted_content_types
-                      .collect{ |content_type| ".#{content_type.split("/").last}" }
-                      .join(",")
+    Setting.accepted_content_types_for("documents").map { |content_type| ".#{content_type}" }.join(",")
   end
 
   def documentable_humanized_accepted_content_types(documentable_class)
-    documentable_class.accepted_content_types
-                      .collect{ |content_type| content_type.split("/").last }
-                      .join(", ")
+    Setting.accepted_content_types_for("documents").join(", ")
   end
 
   def documentables_note(documentable)
diff --git a/app/helpers/imageables_helper.rb b/app/helpers/imageables_helper.rb
index 1a85362d8..7c8d87298 100644
--- a/app/helpers/imageables_helper.rb
+++ b/app/helpers/imageables_helper.rb
@@ -9,7 +9,7 @@ module ImageablesHelper
   end
 
   def imageable_max_file_size
-    bytes_to_megabytes(Image::MAX_IMAGE_SIZE)
+    bytes_to_megabytes(Setting["uploads.images.max_size"].to_i.megabytes)
   end
 
   def bytes_to_megabytes(bytes)
@@ -17,19 +17,21 @@ module ImageablesHelper
   end
 
   def imageable_accepted_content_types
-    Image::ACCEPTED_CONTENT_TYPE
+    Setting["uploads.images.content_types"]&.split(" ") || [ "image/jpeg" ]
   end
 
   def imageable_accepted_content_types_extensions
-    Image::ACCEPTED_CONTENT_TYPE
-      .collect{ |content_type| ".#{content_type.split("/").last}" }
-      .join(",")
+    Setting.accepted_content_types_for("images").map do |content_type|
+      if content_type == "jpg"
+        ".jpg,.jpeg"
+      else
+        ".#{content_type}"
+      end
+    end.join(",")
   end
 
   def imageable_humanized_accepted_content_types
-    Image::ACCEPTED_CONTENT_TYPE
-      .collect{ |content_type| content_type.split("/").last }
-      .join(", ")
+    Setting.accepted_content_types_for("images").join(", ")
   end
 
   def imageables_note(_imageable)
diff --git a/app/models/budget/investment.rb b/app/models/budget/investment.rb
index 2eaf801c1..55634cf4b 100644
--- a/app/models/budget/investment.rb
+++ b/app/models/budget/investment.rb
@@ -13,9 +13,6 @@ class Budget
     include Imageable
     include Mappable
     include Documentable
-    documentable max_documents_allowed: 3,
-                 max_file_size: 3.megabytes,
-                 accepted_content_types: [ "application/pdf" ]
 
     acts_as_votable
     acts_as_paranoid column: :hidden_at
diff --git a/app/models/concerns/documentable.rb b/app/models/concerns/documentable.rb
index 36e91ece7..9f49d9af9 100644
--- a/app/models/concerns/documentable.rb
+++ b/app/models/concerns/documentable.rb
@@ -7,16 +7,17 @@ module Documentable
   end
 
   module ClassMethods
-    attr_reader :max_documents_allowed, :max_file_size, :accepted_content_types
-
-    private
-
-    def documentable(options = {})
-      @max_documents_allowed = options[:max_documents_allowed]
-      @max_file_size = options[:max_file_size]
-      @accepted_content_types = options[:accepted_content_types]
+    def max_documents_allowed
+      Setting["uploads.documents.max_amount"].to_i
     end
 
+    def max_file_size
+      Setting["uploads.documents.max_size"].to_i.megabytes
+    end
+
+    def accepted_content_types
+      Setting["uploads.documents.content_types"]&.split(" ") || [ "application/pdf" ]
+    end
   end
 
 end
diff --git a/app/models/dashboard/action.rb b/app/models/dashboard/action.rb
index afe61c075..4dea153a7 100644
--- a/app/models/dashboard/action.rb
+++ b/app/models/dashboard/action.rb
@@ -1,13 +1,5 @@
 class Dashboard::Action < ApplicationRecord
   include Documentable
-  documentable max_documents_allowed: 3,
-               max_file_size: 3.megabytes,
-               accepted_content_types: [ "application/pdf",
-                                         "image/jpeg",
-                                         "image/jpg",
-                                         "image/png",
-                                         "application/zip" ]
-
   include Linkable
 
   acts_as_paranoid column: :hidden_at
diff --git a/app/models/image.rb b/app/models/image.rb
index eefcd3926..6929f5f96 100644
--- a/app/models/image.rb
+++ b/app/models/image.rb
@@ -2,12 +2,11 @@ class Image < ApplicationRecord
   include ImagesHelper
   include ImageablesHelper
 
-  TITLE_LENGTH_RANGE = 4..80
-  MIN_SIZE = 475
-  MAX_IMAGE_SIZE = 1.megabyte
-  ACCEPTED_CONTENT_TYPE = %w(image/jpeg image/jpg).freeze
-
-  has_attached_file :attachment, styles: { large: "x#{MIN_SIZE}", medium: "300x300#", thumb: "140x245#" },
+  has_attached_file :attachment, styles: {
+                                   large: "x#{Setting["uploads.images.min_height"]}",
+                                   medium: "300x300#",
+                                   thumb: "140x245#"
+                                 },
                                  url: "/system/:class/:prefix/:style/:hash.:extension",
                                  hash_data: ":class/:style",
                                  use_timestamp: false,
@@ -23,7 +22,8 @@ class Image < ApplicationRecord
   validate :attachment_presence
   validate :validate_attachment_content_type,         if: -> { attachment.present? }
   validate :validate_attachment_size,                 if: -> { attachment.present? }
-  validates :title, presence: true, length: { in: TITLE_LENGTH_RANGE }
+  validates :title, presence: true
+  validate :validate_title_length
   validates :user_id, presence: true
   validates :imageable_id, presence: true,         if: -> { persisted? }
   validates :imageable_type, presence: true,       if: -> { persisted? }
@@ -71,20 +71,38 @@ class Image < ApplicationRecord
         return true if imageable_class == Widget::Card
 
         dimensions = Paperclip::Geometry.from_file(attachment.queued_for_write[:original].path)
-        errors.add(:attachment, :min_image_width, required_min_width: MIN_SIZE) if dimensions.width < MIN_SIZE
-        errors.add(:attachment, :min_image_height, required_min_height: MIN_SIZE) if dimensions.height < MIN_SIZE
+        min_width = Setting["uploads.images.min_width"].to_i
+        min_height = Setting["uploads.images.min_height"].to_i
+        errors.add(:attachment, :min_image_width, required_min_width: min_width) if dimensions.width < min_width
+        errors.add(:attachment, :min_image_height, required_min_height: min_height) if dimensions.height < min_height
       end
     end
 
     def validate_attachment_size
       if imageable_class &&
-         attachment_file_size > 1.megabytes
+         attachment_file_size > Setting["uploads.images.max_size"].to_i.megabytes
         errors.add(:attachment, I18n.t("images.errors.messages.in_between",
                                      min: "0 Bytes",
                                      max: "#{imageable_max_file_size} MB"))
       end
     end
 
+    def validate_title_length
+      if title.present?
+
+        title_min_length = Setting["uploads.images.title.min_length"].to_i
+        title_max_length = Setting["uploads.images.title.max_length"].to_i
+
+        if title.size < title_min_length
+          errors.add(:title, I18n.t("errors.messages.too_short", count: title_min_length))
+        end
+
+        if title.size > title_max_length
+          errors.add(:title, I18n.t("errors.messages.too_long", count: title_max_length))
+        end
+      end
+    end
+
     def validate_attachment_content_type
       if imageable_class && !attachment_of_valid_content_type?
         message = I18n.t("images.errors.messages.wrong_content_type",
diff --git a/app/models/legislation/process.rb b/app/models/legislation/process.rb
index 3d2c72c27..3f91ea27a 100644
--- a/app/models/legislation/process.rb
+++ b/app/models/legislation/process.rb
@@ -4,9 +4,6 @@ class Legislation::Process < ApplicationRecord
   include Milestoneable
   include Imageable
   include Documentable
-  documentable max_documents_allowed: 3,
-               max_file_size: 3.megabytes,
-               accepted_content_types: [ "application/pdf" ]
 
   acts_as_paranoid column: :hidden_at
   acts_as_taggable_on :customs
diff --git a/app/models/legislation/proposal.rb b/app/models/legislation/proposal.rb
index d6fdf5eb3..879eeb27d 100644
--- a/app/models/legislation/proposal.rb
+++ b/app/models/legislation/proposal.rb
@@ -14,9 +14,6 @@ class Legislation::Proposal < ApplicationRecord
   include Imageable
   include Randomizable
 
-  documentable max_documents_allowed: 3,
-               max_file_size: 3.megabytes,
-               accepted_content_types: [ "application/pdf" ]
   accepts_nested_attributes_for :documents, allow_destroy: true
 
   acts_as_votable
diff --git a/app/models/milestone.rb b/app/models/milestone.rb
index 69d46149a..52f8ccb29 100644
--- a/app/models/milestone.rb
+++ b/app/models/milestone.rb
@@ -1,9 +1,6 @@
 class Milestone < ApplicationRecord
   include Imageable
   include Documentable
-  documentable max_documents_allowed: 3,
-               max_file_size: 3.megabytes,
-               accepted_content_types: [ "application/pdf" ]
 
   translates :title, :description, touch: true
   include Globalizable
diff --git a/app/models/poll/question/answer.rb b/app/models/poll/question/answer.rb
index cde5e00d1..aab7acb59 100644
--- a/app/models/poll/question/answer.rb
+++ b/app/models/poll/question/answer.rb
@@ -6,9 +6,6 @@ class Poll::Question::Answer < ApplicationRecord
   translates :description, touch: true
   include Globalizable
 
-  documentable max_documents_allowed: 3,
-               max_file_size: 3.megabytes,
-               accepted_content_types: [ "application/pdf" ]
   accepts_nested_attributes_for :documents, allow_destroy: true
 
   belongs_to :question, class_name: "Poll::Question", foreign_key: "question_id"
diff --git a/app/models/proposal.rb b/app/models/proposal.rb
index deb829058..3b4fbd0e2 100644
--- a/app/models/proposal.rb
+++ b/app/models/proposal.rb
@@ -15,9 +15,6 @@ class Proposal < ApplicationRecord
   include Mappable
   include Notifiable
   include Documentable
-  documentable max_documents_allowed: 3,
-               max_file_size: 3.megabytes,
-               accepted_content_types: [ "application/pdf" ]
   include EmbedVideosHelper
   include Relationable
   include Milestoneable
diff --git a/app/models/setting.rb b/app/models/setting.rb
index 12162db4e..afc363502 100644
--- a/app/models/setting.rb
+++ b/app/models/setting.rb
@@ -52,6 +52,11 @@ class Setting < ApplicationRecord
       setting.destroy if setting.present?
     end
 
+    def accepted_content_types_for(group)
+      mime_content_types = Setting["uploads.#{group}.content_types"]&.split(" ") || []
+      Setting.mime_types[group].select { |_, content_type| mime_content_types.include?(content_type) }.keys
+    end
+
     def mime_types
       {
         "images" => {
diff --git a/config/i18n-tasks.yml b/config/i18n-tasks.yml
index 240313c32..87670d676 100644
--- a/config/i18n-tasks.yml
+++ b/config/i18n-tasks.yml
@@ -115,6 +115,8 @@ ignore_missing:
   - "activerecord.errors.models.direct_message.*"
   - "errors.messages.blank"
   - "errors.messages.taken"
+  - "errors.messages.too_short"
+  - "errors.messages.too_long"
   - "devise.failure.invalid"
   - "devise.registrations.destroyed"
   - "devise.password_expired.*"
diff --git a/spec/models/setting_spec.rb b/spec/models/setting_spec.rb
index df764b7ca..fde1615cd 100644
--- a/spec/models/setting_spec.rb
+++ b/spec/models/setting_spec.rb
@@ -148,6 +148,24 @@ describe Setting do
     end
   end
 
+  describe ".accepted_content_types_for" do
+    it "returns the formats accepted according to the setting value" do
+      Setting["uploads.images.content_types"] =    "image/jpeg image/gif"
+      Setting["uploads.documents.content_types"] = "application/pdf application/msword"
+
+      expect(Setting.accepted_content_types_for("images")).to    eq ["jpg", "gif"]
+      expect(Setting.accepted_content_types_for("documents")).to eq ["pdf", "doc"]
+    end
+
+    it "returns empty array if setting does't exist" do
+      Setting.remove("uploads.images.content_types")
+      Setting.remove("uploads.documents.content_types")
+
+      expect(Setting.accepted_content_types_for("images")).to    be_empty
+      expect(Setting.accepted_content_types_for("documents")).to be_empty
+    end
+  end
+
   describe ".add_new_settings" do
     context "default settings with strings" do
       before do
diff --git a/spec/shared/models/image_validations.rb b/spec/shared/models/image_validations.rb
index 691d73bae..c2b02a636 100644
--- a/spec/shared/models/image_validations.rb
+++ b/spec/shared/models/image_validations.rb
@@ -41,7 +41,8 @@ shared_examples "image validations" do |imageable_factory|
   end
 
   it "is not valid for attachments larger than imageable max_file_size definition" do
-    allow(image).to receive(:attachment_file_size).and_return(Image::MAX_IMAGE_SIZE + 1.byte)
+    larger_size = Setting["uploads.images.max_size"].to_i.megabytes + 1.byte
+    allow(image).to receive(:attachment_file_size).and_return(larger_size)
 
     expect(image).not_to be_valid
     expect(image.errors[:attachment]).to include "must be in between 0 Bytes and 1 MB"
@@ -67,4 +68,4 @@ shared_examples "image validations" do |imageable_factory|
     expect(image).not_to be_valid
   end
 
-end
\ No newline at end of file
+end