diff --git a/.rubocop.yml b/.rubocop.yml
index cb27cc7..6c9b620 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -26,7 +26,7 @@ RSpec/DescribeClass:
 
 RSpec/ExampleLength:
   # Default is 5
-  Max: 10
+  Max: 15
 
 RSpec/MultipleExpectations:
   # Default is 1
diff --git a/Gemfile b/Gemfile
index bbc87db..07ddc08 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,6 +13,8 @@ group :development, :test do
   gem 'mysql2' if ENV['DB_TEST'] == 'mysql'
   gem 'pg' if ['postgres', 'postgresql'].include? ENV['DB_TEST']
 
+  gem "image_processing", ">= 1.2"
+
   gem 'simplecov'
   gem 'simplecov-lcov'
 
diff --git a/gemfiles/rails_6_1_mssql.gemfile b/gemfiles/rails_6_1_mssql.gemfile
index a9640c2..027d0bf 100644
--- a/gemfiles/rails_6_1_mssql.gemfile
+++ b/gemfiles/rails_6_1_mssql.gemfile
@@ -7,6 +7,7 @@ gem "rails", "~> 6.1.0"
 gem "tiny_tds"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_6_1_mssql.gemfile.lock b/gemfiles/rails_6_1_mssql.gemfile.lock
index e158478..334123f 100644
--- a/gemfiles/rails_6_1_mssql.gemfile.lock
+++ b/gemfiles/rails_6_1_mssql.gemfile.lock
@@ -104,10 +104,14 @@ GEM
     fasterer (0.10.1)
       colorize (~> 0.7)
       ruby_parser (>= 3.19.1)
+    ffi (1.16.3)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     loofah (2.21.4)
@@ -121,6 +125,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.5)
     mini_portile2 (2.8.4)
     minitest (5.20.0)
@@ -235,6 +240,8 @@ GEM
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby_parser (3.20.3)
       sexp_processor (~> 4.16)
     rubyzip (2.3.2)
@@ -283,6 +290,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   pry-rails
   rails (~> 6.1.0)
   rspec-rails
diff --git a/gemfiles/rails_6_1_mysql.gemfile b/gemfiles/rails_6_1_mysql.gemfile
index 556568d..7f07d2f 100644
--- a/gemfiles/rails_6_1_mysql.gemfile
+++ b/gemfiles/rails_6_1_mysql.gemfile
@@ -6,6 +6,7 @@ gem "mysql2"
 gem "rails", "~> 6.1.0"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_6_1_mysql.gemfile.lock b/gemfiles/rails_6_1_mysql.gemfile.lock
index f125770..e548af9 100644
--- a/gemfiles/rails_6_1_mysql.gemfile.lock
+++ b/gemfiles/rails_6_1_mysql.gemfile.lock
@@ -101,10 +101,14 @@ GEM
     fasterer (0.9.0)
       colorize (~> 0.7)
       ruby_parser (>= 3.14.1)
+    ffi (1.16.3)
     globalid (1.0.0)
       activesupport (>= 5.0)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     loofah (2.14.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -113,6 +117,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.2)
     mini_portile2 (2.8.4)
     minitest (5.15.0)
@@ -206,6 +211,8 @@ GEM
     rubocop-rspec (2.8.0)
       rubocop (~> 1.19)
     ruby-progressbar (1.11.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby_parser (3.18.1)
       sexp_processor (~> 4.16)
     rubyzip (2.3.2)
@@ -251,6 +258,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   mysql2
   pry-rails
   rails (~> 6.1.0)
diff --git a/gemfiles/rails_6_1_postgres.gemfile b/gemfiles/rails_6_1_postgres.gemfile
index 00d4388..4bade8e 100644
--- a/gemfiles/rails_6_1_postgres.gemfile
+++ b/gemfiles/rails_6_1_postgres.gemfile
@@ -6,6 +6,7 @@ gem "pg"
 gem "rails", "~> 6.1.0"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_6_1_postgres.gemfile.lock b/gemfiles/rails_6_1_postgres.gemfile.lock
index f342785..eff97c7 100644
--- a/gemfiles/rails_6_1_postgres.gemfile.lock
+++ b/gemfiles/rails_6_1_postgres.gemfile.lock
@@ -101,10 +101,14 @@ GEM
     fasterer (0.9.0)
       colorize (~> 0.7)
       ruby_parser (>= 3.14.1)
+    ffi (1.16.3)
     globalid (1.0.0)
       activesupport (>= 5.0)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     loofah (2.14.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -113,6 +117,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.2)
     mini_portile2 (2.8.4)
     minitest (5.15.0)
@@ -210,6 +215,8 @@ GEM
     rubocop-rspec (2.8.0)
       rubocop (~> 1.19)
     ruby-progressbar (1.11.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby_parser (3.18.1)
       sexp_processor (~> 4.16)
     rubyzip (2.3.2)
@@ -255,6 +262,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   pg
   pry-rails
   rails (~> 6.1.0)
diff --git a/gemfiles/rails_7_0_mssql.gemfile b/gemfiles/rails_7_0_mssql.gemfile
index 02a1349..46dad46 100644
--- a/gemfiles/rails_7_0_mssql.gemfile
+++ b/gemfiles/rails_7_0_mssql.gemfile
@@ -7,6 +7,7 @@ gem "rails", "~> 7.0.0"
 gem "tiny_tds"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_7_0_mssql.gemfile.lock b/gemfiles/rails_7_0_mssql.gemfile.lock
index 0d22060..c74d4c3 100644
--- a/gemfiles/rails_7_0_mssql.gemfile.lock
+++ b/gemfiles/rails_7_0_mssql.gemfile.lock
@@ -110,10 +110,14 @@ GEM
     fasterer (0.10.1)
       colorize (~> 0.7)
       ruby_parser (>= 3.19.1)
+    ffi (1.16.3)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     loofah (2.21.4)
@@ -127,6 +131,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.5)
     minitest (5.20.0)
     net-imap (0.4.3)
@@ -239,6 +244,8 @@ GEM
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby_parser (3.20.3)
       sexp_processor (~> 4.16)
     rubyzip (2.3.2)
@@ -280,6 +287,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   pry-rails
   rails (~> 7.0.0)
   rspec-rails
diff --git a/gemfiles/rails_7_0_mysql.gemfile b/gemfiles/rails_7_0_mysql.gemfile
index b70d461..b1a917b 100644
--- a/gemfiles/rails_7_0_mysql.gemfile
+++ b/gemfiles/rails_7_0_mysql.gemfile
@@ -6,6 +6,7 @@ gem "mysql2"
 gem "rails", "~> 7.0.0"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_7_0_mysql.gemfile.lock b/gemfiles/rails_7_0_mysql.gemfile.lock
index de9770c..72dc00d 100644
--- a/gemfiles/rails_7_0_mysql.gemfile.lock
+++ b/gemfiles/rails_7_0_mysql.gemfile.lock
@@ -107,10 +107,14 @@ GEM
     fasterer (0.10.1)
       colorize (~> 0.7)
       ruby_parser (>= 3.19.1)
+    ffi (1.16.3)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     loofah (2.21.4)
@@ -124,6 +128,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.5)
     minitest (5.20.0)
     mysql2 (0.5.5)
@@ -239,6 +244,8 @@ GEM
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby_parser (3.20.3)
       sexp_processor (~> 4.16)
     rubyzip (2.3.2)
@@ -279,6 +286,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   mysql2
   pry-rails
   rails (~> 7.0.0)
diff --git a/gemfiles/rails_7_0_postgres.gemfile b/gemfiles/rails_7_0_postgres.gemfile
index 0ec78af..e3779da 100644
--- a/gemfiles/rails_7_0_postgres.gemfile
+++ b/gemfiles/rails_7_0_postgres.gemfile
@@ -6,6 +6,7 @@ gem "pg"
 gem "rails", "~> 7.0.0"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_7_0_postgres.gemfile.lock b/gemfiles/rails_7_0_postgres.gemfile.lock
index 43efae2..04167ed 100644
--- a/gemfiles/rails_7_0_postgres.gemfile.lock
+++ b/gemfiles/rails_7_0_postgres.gemfile.lock
@@ -107,10 +107,14 @@ GEM
     fasterer (0.10.1)
       colorize (~> 0.7)
       ruby_parser (>= 3.19.1)
+    ffi (1.16.3)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     loofah (2.21.4)
@@ -124,6 +128,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.5)
     minitest (5.20.0)
     net-imap (0.4.3)
@@ -239,6 +244,8 @@ GEM
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby_parser (3.20.3)
       sexp_processor (~> 4.16)
     rubyzip (2.3.2)
@@ -279,6 +286,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   pg
   pry-rails
   rails (~> 7.0.0)
diff --git a/gemfiles/rails_7_1_mysql.gemfile b/gemfiles/rails_7_1_mysql.gemfile
index 999ffcf..33f538a 100644
--- a/gemfiles/rails_7_1_mysql.gemfile
+++ b/gemfiles/rails_7_1_mysql.gemfile
@@ -6,6 +6,7 @@ gem "mysql2"
 gem "rails", "~> 7.1.0"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_7_1_mysql.gemfile.lock b/gemfiles/rails_7_1_mysql.gemfile.lock
index 35ba117..ac7be16 100644
--- a/gemfiles/rails_7_1_mysql.gemfile.lock
+++ b/gemfiles/rails_7_1_mysql.gemfile.lock
@@ -120,10 +120,14 @@ GEM
     fasterer (0.10.1)
       colorize (~> 0.7)
       ruby_parser (>= 3.19.1)
+    ffi (1.16.3)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     io-console (0.6.0)
     irb (1.8.3)
       rdoc
@@ -141,6 +145,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.5)
     minitest (5.20.0)
     mutex_m (0.1.2)
@@ -267,6 +272,8 @@ GEM
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby2_keywords (0.0.5)
     ruby_parser (3.20.3)
       sexp_processor (~> 4.16)
@@ -309,6 +316,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   mysql2
   pry-rails
   rails (~> 7.1.0)
diff --git a/gemfiles/rails_7_1_postgres.gemfile b/gemfiles/rails_7_1_postgres.gemfile
index 38d0afc..7243620 100644
--- a/gemfiles/rails_7_1_postgres.gemfile
+++ b/gemfiles/rails_7_1_postgres.gemfile
@@ -6,6 +6,7 @@ gem "pg"
 gem "rails", "~> 7.1.0"
 
 group :development, :test do
+  gem "image_processing", ">= 1.2"
   gem "simplecov"
   gem "simplecov-lcov"
   gem "capybara"
diff --git a/gemfiles/rails_7_1_postgres.gemfile.lock b/gemfiles/rails_7_1_postgres.gemfile.lock
index 49da516..ff66f1f 100644
--- a/gemfiles/rails_7_1_postgres.gemfile.lock
+++ b/gemfiles/rails_7_1_postgres.gemfile.lock
@@ -120,10 +120,14 @@ GEM
     fasterer (0.10.1)
       colorize (~> 0.7)
       ruby_parser (>= 3.19.1)
+    ffi (1.16.3)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     io-console (0.6.0)
     irb (1.8.3)
       rdoc
@@ -141,6 +145,7 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
+    mini_magick (4.12.0)
     mini_mime (1.1.5)
     minitest (5.20.0)
     mutex_m (0.1.2)
@@ -267,6 +272,8 @@ GEM
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby2_keywords (0.0.5)
     ruby_parser (3.20.3)
       sexp_processor (~> 4.16)
@@ -309,6 +316,7 @@ DEPENDENCIES
   capybara
   factory_bot_rails (~> 6.1)
   fasterer
+  image_processing (>= 1.2)
   pg
   pry-rails
   rails (~> 7.1.0)
diff --git a/spec/dummy61/config/environments/test.rb b/spec/dummy61/config/environments/test.rb
index 17d1f27..4669a8e 100644
--- a/spec/dummy61/config/environments/test.rb
+++ b/spec/dummy61/config/environments/test.rb
@@ -34,6 +34,7 @@
 
   # Store uploaded files on the local file system in a temporary directory.
   config.active_storage.service = :db
+  config.active_storage.track_variants = true
 
   config.action_mailer.perform_caching = false
 
diff --git a/spec/dummy70/config/environments/test.rb b/spec/dummy70/config/environments/test.rb
index 608a860..ffade5d 100644
--- a/spec/dummy70/config/environments/test.rb
+++ b/spec/dummy70/config/environments/test.rb
@@ -36,6 +36,7 @@
   # Store uploaded files on the local file system in a temporary directory.
   #config.active_storage.service = :test
   config.active_storage.service = :db
+  config.active_storage.track_variants = true
 
   config.action_mailer.perform_caching = false
 
diff --git a/spec/dummy_base/app/models/post.rb b/spec/dummy_base/app/models/post.rb
index 3e33d25..a62daca 100644
--- a/spec/dummy_base/app/models/post.rb
+++ b/spec/dummy_base/app/models/post.rb
@@ -1,7 +1,9 @@
 # frozen_string_literal: true
 
 class Post < ApplicationRecord
-  has_one_attached :some_file
+  has_one_attached :some_file do |attachable|
+    attachable.variant :thumb, resize_to_limit: [100, 100]
+  end
 
   validates :title, presence: true, allow_blank: false
 end
diff --git a/spec/fixtures/files/file3.png b/spec/fixtures/files/file3.png
new file mode 100644
index 0000000..c6de0c6
Binary files /dev/null and b/spec/fixtures/files/file3.png differ
diff --git a/spec/integration/attachments_spec.rb b/spec/integration/attachments_spec.rb
index f38a849..dcf6ed8 100644
--- a/spec/integration/attachments_spec.rb
+++ b/spec/integration/attachments_spec.rb
@@ -21,20 +21,27 @@
   end
 
   context 'with an existing target entity' do
-    let(:filename) { 'file1.txt' }
+    let(:filename) { 'file3.png' }
 
     let!(:test_post) { Post.create!(title: 'A test post') }
 
     it 'attaches the file to the target entity', :aggregate_failures do
       expect {
         test_post.some_file.attach(io: file_fixture(filename).open, filename: filename)
-      }.to change(ActiveStorageDB::File, :count).by(1)
+      }.to change(ActiveStorageDB::File, :count).from(0).to(1)
 
-      expect(test_post.some_file).to be_attached
-      expect(test_post.some_file.download).to eq file_fixture(filename).read
+      variant = test_post.some_file.variant(:thumb)
+      expect { variant.process }.to change(ActiveStorageDB::File, :count).by(1)
+
+      expect(test_post.some_file.attached?).to be true
+      expect(test_post.some_file.download).to eq file_fixture(filename).binread
 
       blob_path = Rails.application.routes.url_helpers.rails_blob_path(test_post.some_file, only_path: true)
       expect(blob_path).to match %r[/rails/active_storage/.+#{filename}]
+
+      expect {
+        test_post.some_file.purge
+      }.to change(ActiveStorageDB::File, :count).by(-1)
     end
   end
 end