diff --git a/.ruby-gemset b/.ruby-gemset
new file mode 100644
index 0000000..18eed2f
--- /dev/null
+++ b/.ruby-gemset
@@ -0,0 +1 @@
+node-ruby-img
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..951d42f
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+ruby-2.4.2
diff --git a/Gemfile b/Gemfile
index 925db3f..ae6f57b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,4 @@
 source "https://rubygems.org"
 
 gem 'ruby-vips'
+gem 'mini_magick'
diff --git a/Rakefile b/Rakefile
index d66c076..0e84f32 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,9 @@
 namespace :run do
+  desc "Run Ruby Minimagick benchmark"
+  task "ruby:mini" do
+    sh "ruby ruby_io_speed_mm.rb"
+  end
+
   desc "Run Ruby benchmark"
   task :ruby do
     sh "ruby ruby_io_speed.rb"
@@ -15,7 +20,7 @@ namespace :run do
   end
 
   desc "Run all benchmarks"
-  task :all => [:ruby, :node, "node:streams"]
+  task :all => ["ruby:mini", :ruby, :node, "node:streams"]
 end
 
 namespace :install do
diff --git a/mem.rb b/mem.rb
new file mode 100644
index 0000000..be0dc6f
--- /dev/null
+++ b/mem.rb
@@ -0,0 +1,29 @@
+require 'thread'
+
+# Credits: http://zogovic.com/post/59091704817/memory-usage-monitor-in-ruby
+
+class MemoryUsageMonitor
+  attr_reader :peak_memory, :log
+
+  def initialize(frequency: 0.25)
+    @frequency = frequency
+    @peak_memory = 0
+    @log = []
+  end
+
+  def start
+    @thread = Thread.new do
+      while true do
+        puts "#{Process::pid}"
+        memory = `ps -o rss -p #{Process::pid}`.chomp.split("\n").last.strip.to_i
+        @log.push memory
+        @peak_memory = [memory, @peak_memory].max
+        sleep @frequency
+      end
+    end
+  end
+
+  def stop
+    Thread.kill(@thread)
+  end
+end
diff --git a/node_io_speed.js b/node_io_speed.js
index 238edcd..4ee6ca9 100644
--- a/node_io_speed.js
+++ b/node_io_speed.js
@@ -12,7 +12,7 @@ var SIZES = {
 var performUpload = function(size, next){
   var name = size + ".jpg"
   sharp('cakes.jpg')
-    .resize(SIZES[size][0], SIZES[size][1])
+    .resize(SIZES[size][0])
     .toFile(name, next);
 }
 
diff --git a/node_io_speed_streams.js b/node_io_speed_streams.js
index f9e3fe0..bcbb929 100644
--- a/node_io_speed_streams.js
+++ b/node_io_speed_streams.js
@@ -15,7 +15,7 @@ var performUpload = function(size, next){
   var resizer = function(){
     var client = sharp()
     return client.resize.
-      apply(client, SIZES[size])
+      apply(client, [SIZES[size][0]])
   }
 
   var stream = image.pipe(resizer(size)).pipe(fs.createWriteStream(name))
diff --git a/package-lock.json b/package-lock.json
index 8e9bcb6..5bb0b45 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,63 +9,274 @@
       "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
       "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
     },
-    "bluebird": {
-      "version": "3.5.0",
-      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.0.tgz",
-      "integrity": "sha1-eRQg1/VR7qKJdFOop3ZT+WYG1nw="
-    },
-    "color": {
-      "version": "0.10.1",
-      "resolved": "https://registry.npmjs.org/color/-/color-0.10.1.tgz",
-      "integrity": "sha1-wEGI34KiCd3rzOzazT7DIPGTc58=",
+    "caw": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/caw/-/caw-2.0.1.tgz",
+      "integrity": "sha512-Cg8/ZSBEa8ZVY9HspcGUYaK63d/bN7rqS3CYCzEGUxuYv6UlmcjzDUz2fCFFHyTvUW5Pk0I+3hkA3iXlIj6guA==",
       "requires": {
-        "color-convert": "0.5.3",
-        "color-string": "0.3.0"
+        "get-proxy": "2.1.0",
+        "isurl": "1.0.0",
+        "tunnel-agent": "0.6.0",
+        "url-to-options": "1.0.1"
       }
     },
-    "color-convert": {
-      "version": "0.5.3",
-      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-0.5.3.tgz",
-      "integrity": "sha1-vbbGnOZg+t/+CwAHzER+G59ygr0="
+    "chownr": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.0.1.tgz",
+      "integrity": "sha1-4qdQQqlVGQi+vSW4Uj1fl2nXkYE="
     },
     "color-name": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
     },
-    "color-string": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/color-string/-/color-string-0.3.0.tgz",
-      "integrity": "sha1-J9RvtnAlxcL6JZk7+/V55HhBuZE=",
+    "config-chain": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/config-chain/-/config-chain-1.1.11.tgz",
+      "integrity": "sha1-q6CXR9++TD5w52am5BWG4YWfxvI=",
+      "requires": {
+        "ini": "1.3.4",
+        "proto-list": "1.2.4"
+      }
+    },
+    "decompress-response": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-3.3.0.tgz",
+      "integrity": "sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=",
       "requires": {
-        "color-name": "1.1.3"
+        "mimic-response": "1.0.0"
       }
     },
+    "detect-libc": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-0.2.0.tgz",
+      "integrity": "sha1-R/31ZzSKF+wl/L8LnkRjSKdvn7U="
+    },
     "dotenv": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-1.2.0.tgz",
       "integrity": "sha1-fNc+FuB/BXyAchR6W8OoZ38KtcY="
     },
+    "get-proxy": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/get-proxy/-/get-proxy-2.1.0.tgz",
+      "integrity": "sha512-zmZIaQTWnNQb4R4fJUEp/FC51eZsc6EkErspy3xtIYStaq8EB/hDIWipxsal+E8rz0qD7f2sL/NA9Xee4RInJw==",
+      "requires": {
+        "npm-conf": "1.1.2"
+      }
+    },
+    "has-symbol-support-x": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/has-symbol-support-x/-/has-symbol-support-x-1.4.1.tgz",
+      "integrity": "sha512-JkaetveU7hFbqnAC1EV1sF4rlojU2D4Usc5CmS69l6NfmPDnpnFUegzFg33eDkkpNCxZ0mQp65HwUDrNFS/8MA=="
+    },
+    "has-to-string-tag-x": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/has-to-string-tag-x/-/has-to-string-tag-x-1.4.1.tgz",
+      "integrity": "sha512-vdbKfmw+3LoOYVr+mtxHaX5a96+0f3DljYd8JOqvOLsf5mw2Otda2qCDT9qRqLAhrjyQ0h7ual5nOiASpsGNFw==",
+      "requires": {
+        "has-symbol-support-x": "1.4.1"
+      }
+    },
+    "ini": {
+      "version": "1.3.4",
+      "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.4.tgz",
+      "integrity": "sha1-BTfLedr1m1mhpRff9wbIbsA5Fi4="
+    },
+    "is-arrayish": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.3.1.tgz",
+      "integrity": "sha1-wt/DhquqDD4zxI2z/ocFnmkGXv0="
+    },
+    "is-object": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/is-object/-/is-object-1.0.1.tgz",
+      "integrity": "sha1-iVJojF7C/9awPsyF52ngKQMINHA="
+    },
+    "isurl": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/isurl/-/isurl-1.0.0.tgz",
+      "integrity": "sha512-1P/yWsxPlDtn7QeRD+ULKQPaIaN6yF368GZ2vDfv0AL0NwpStafjWCDDdn0k8wgFMWpVAqG7oJhxHnlud42i9w==",
+      "requires": {
+        "has-to-string-tag-x": "1.4.1",
+        "is-object": "1.0.1"
+      }
+    },
+    "mimic-response": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/mimic-response/-/mimic-response-1.0.0.tgz",
+      "integrity": "sha1-3z02Uqc/3ta5sLJBRub9BSNTRY4="
+    },
+    "minimist": {
+      "version": "0.0.8",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+      "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+    },
+    "minipass": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.2.1.tgz",
+      "integrity": "sha512-u1aUllxPJUI07cOqzR7reGmQxmCqlH88uIIsf6XZFEWgw7gXKpJdR+5R9Y3KEDmWYkdIz9wXZs3C0jOPxejk/Q==",
+      "requires": {
+        "yallist": "3.0.2"
+      }
+    },
+    "minizlib": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.0.3.tgz",
+      "integrity": "sha1-1cGr93vhVGGZUuJTM27Mq5sqMvU=",
+      "requires": {
+        "minipass": "2.2.1"
+      }
+    },
+    "mkdirp": {
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+      "requires": {
+        "minimist": "0.0.8"
+      }
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     "nan": {
       "version": "2.7.0",
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       "integrity": "sha1-2Vv3IeyHfgjbJ27T/G63j5CDrUY="
     },
+    "npm-conf": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/npm-conf/-/npm-conf-1.1.2.tgz",
+      "integrity": "sha512-dotwbpwVzfNB/2EF3A2wjK5tEMLggKfuA/8TG6WvBB1Zrv+JsvF7E8ei9B/HGq211st/GwXFbREcNJvJ1eySUQ==",
+      "requires": {
+        "config-chain": "1.1.11",
+        "pify": "3.0.0"
+      }
+    },
+    "once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "requires": {
+        "wrappy": "1.0.2"
+      }
+    },
+    "pify": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+      "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+    },
+    "proto-list": {
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/proto-list/-/proto-list-1.2.4.tgz",
+      "integrity": "sha1-IS1b/hMYMGpCD2QCuOJv85ZHqEk="
+    },
+    "safe-buffer": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
+      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
+    },
     "semver": {
       "version": "5.4.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
       "integrity": "sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg=="
     },
     "sharp": {
-      "version": "0.11.4",
-      "resolved": "https://registry.npmjs.org/sharp/-/sharp-0.11.4.tgz",
-      "integrity": "sha1-90oencsS7Db/vPXePitioF/Zljw=",
+      "version": "0.18.4",
+      "resolved": "https://registry.npmjs.org/sharp/-/sharp-0.18.4.tgz",
+      "integrity": "sha1-/jKcDwaJbCiqJDdt8f/wKuV/LTQ=",
       "requires": {
-        "bluebird": "3.5.0",
-        "color": "0.10.1",
+        "caw": "2.0.1",
+        "color": "2.0.0",
+        "detect-libc": "0.2.0",
         "nan": "2.7.0",
-        "semver": "5.4.1"
+        "semver": "5.4.1",
+        "simple-get": "2.7.0",
+        "tar": "3.2.1"
+      },
+      "dependencies": {
+        "color": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/color/-/color-2.0.0.tgz",
+          "integrity": "sha1-4MmXLR6WmFcASxAeqlXOq1lh1n0=",
+          "requires": {
+            "color-convert": "1.9.0",
+            "color-string": "1.5.2"
+          }
+        },
+        "color-convert": {
+          "version": "1.9.0",
+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.0.tgz",
+          "integrity": "sha1-Gsz5fdc5uYO/mU1W/sj5WFNkG3o=",
+          "requires": {
+            "color-name": "1.1.3"
+          }
+        },
+        "color-string": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/color-string/-/color-string-1.5.2.tgz",
+          "integrity": "sha1-JuRYFLw8mny9Z1FkikFDRRSnc6k=",
+          "requires": {
+            "color-name": "1.1.3",
+            "simple-swizzle": "0.2.2"
+          }
+        }
       }
+    },
+    "simple-concat": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.0.tgz",
+      "integrity": "sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY="
+    },
+    "simple-get": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/simple-get/-/simple-get-2.7.0.tgz",
+      "integrity": "sha512-RkE9rGPHcxYZ/baYmgJtOSM63vH0Vyq+ma5TijBcLla41SWlh8t6XYIGMR/oeZcmr+/G8k+zrClkkVrtnQ0esg==",
+      "requires": {
+        "decompress-response": "3.3.0",
+        "once": "1.4.0",
+        "simple-concat": "1.0.0"
+      }
+    },
+    "simple-swizzle": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz",
+      "integrity": "sha1-pNprY1/8zMoz9w0Xy5JZLeleVXo=",
+      "requires": {
+        "is-arrayish": "0.3.1"
+      }
+    },
+    "tar": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-3.2.1.tgz",
+      "integrity": "sha512-ZSzds1E0IqutvMU8HxjMaU8eB7urw2fGwTq88ukDOVuUIh0656l7/P7LiVPxhO5kS4flcRJQk8USG+cghQbTUQ==",
+      "requires": {
+        "chownr": "1.0.1",
+        "minipass": "2.2.1",
+        "minizlib": "1.0.3",
+        "mkdirp": "0.5.1",
+        "yallist": "3.0.2"
+      }
+    },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
+    "url-to-options": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/url-to-options/-/url-to-options-1.0.1.tgz",
+      "integrity": "sha1-FQWgOiiaSMvXpDTvuu7FBV9WM6k="
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
+    "yallist": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.2.tgz",
+      "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k="
     }
   }
 }
diff --git a/ruby_io_speed.rb b/ruby_io_speed.rb
index 8d5e56c..696ed8f 100644
--- a/ruby_io_speed.rb
+++ b/ruby_io_speed.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "vips"
 
 ORIGINAL = "cakes.jpg"
@@ -17,4 +18,6 @@
   end
 end.each(&:join)
 
-puts "Took: #{((Time.now - start) * 1000).to_i}ms"
+stop = Time.now
+
+puts "Took: #{((stop - start) * 1000).to_i}ms"
diff --git a/ruby_io_speed_mm.rb b/ruby_io_speed_mm.rb
new file mode 100644
index 0000000..a6413f2
--- /dev/null
+++ b/ruby_io_speed_mm.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+require "mini_magick"
+
+ORIGINAL = "cakes.jpg"
+
+SIZES = {
+  large:  [800, 800],
+  medium: [500, 500],
+  small:  [300, 300],
+}
+
+start = Time.now
+
+SIZES.map do |size, (width, height)|
+  Thread.new do
+    name = size.to_s + ".jpg"
+    MiniMagick::Image.open(ORIGINAL).resize("#{width}x#{height}").write(name)
+  end
+end.each(&:join)
+
+stop = Time.now
+
+puts "Took: #{((stop - start) * 1000).to_i}ms"