diff --git a/Gemfile b/Gemfile
index 3ec1685..c274cc2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -29,7 +29,7 @@ gem "gpx"
 gem "gnuplot"
 gem "matrix"
 
-gem "ruby-readability", :require => "readability"
+gem "ruby-readability", require: "readability"
 gem "down"
 gem "httparty"
 gem "redcarpet"
@@ -47,6 +47,7 @@ gem "mail"
 gem "que"
 gem "connection_pool"
 gem "omdb-api", require: false
+gem "image_processing", "~> 1.0"
 
 group :cli, :development do
   gem "hanami-reloader"
diff --git a/Gemfile.lock b/Gemfile.lock
index 9378f88..b5c9802 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -237,6 +237,9 @@ GEM
     i18n (1.13.0)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
+    image_processing (1.12.2)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.17, < 3)
     indieweb-endpoints (8.0.0)
       http (~> 5.0)
       link-header-parser (~> 5.0)
@@ -265,6 +268,7 @@ GEM
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2023.0218.1)
+    mini_magick (4.12.0)
     mini_mime (1.1.2)
     minitest (5.18.0)
     multi_xml (0.6.0)
@@ -395,6 +399,8 @@ GEM
     ruby-readability (0.7.0)
       guess_html_encoding (>= 0.0.4)
       nokogiri (>= 1.6.0)
+    ruby-vips (2.1.4)
+      ffi (~> 1.12)
     ruby2_keywords (0.0.5)
     sanitize (6.0.1)
       crass (~> 1.0.2)
@@ -473,6 +479,7 @@ DEPENDENCIES
   hanami-validations (~> 2.0.0)
   hanami-view!
   httparty
+  image_processing (~> 1.0)
   lastfm (~> 1.27)
   mail
   matrix
diff --git a/app/commands/media/upload.rb b/app/commands/media/upload.rb
index 5c901f5..dc55cdb 100644
--- a/app/commands/media/upload.rb
+++ b/app/commands/media/upload.rb
@@ -3,6 +3,7 @@
 require "securerandom"
 require "dry/monads"
 require "filemagic"
+require "image_processing/vips"
 
 module Adamantium
   module Commands
@@ -11,7 +12,7 @@ module Adamantium
         include Deps["settings"]
         include Dry::Monads[:result]
 
-        VALID_UPLOAD_TYPES = %i[jpeg jpg png gif mp4 iso]
+        VALID_UPLOAD_TYPES = %i[jpeg jpg png gif]
 
         def call(file:)
           mime = FileMagic.new
@@ -21,16 +22,28 @@ module Adamantium
 
           pathname = Time.now.strftime("%m-%Y")
 
-          filename = "#{SecureRandom.uuid}#{File.extname(file[:filename])}"
+          fullsize_filename = "#{SecureRandom.uuid}#{File.extname(file[:filename])}"
+          thumbnail_filename = "#{SecureRandom.uuid}-small#{File.extname(file[:filename])}"
 
           dirname = File.join("public", "media", pathname)
 
+          fullsize_pipeline = ImageProcessing::Vips.source(file[:tempfile])
+            .resize_to_limit(1024, nil)
+            .saver(quality: 100)
+            .call(save: false)
+
+          thumbnail_pipeline = ImageProcessing::Vips.source(file[:tempfile])
+            .resize_to_limit(300, 300, crop: :attention)
+            .saver(quality: 100)
+            .call(save: false)
+
           unless File.directory?(dirname)
             FileUtils.mkdir_p(dirname)
           end
 
           begin
-            File.write(File.join(dirname, filename), file[:tempfile].read)
+            fullsize_pipeline.write_to_file(File.join(dirname, fullsize_filename))
+            thumbnail_pipeline.write_to_file(File.join(dirname, thumbnail_filename))
           rescue Errno::ENOENT, NoMethodError => e
             return Failure(e.message)
           end