diff --git a/README.md b/README.md
index 7c84c8b6..a81f1af8 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,9 @@ The Smogon/Pokemon-Showdown sprite repository
 
 # Installation
 
-You will need to install the Tup build system. Instructions for Windows/Mac/Linux can be found [here](http://gittup.org/tup/).
+- Tup build system. Instructions for Windows/Mac/Linux can be found [here](http://gittup.org/tup/).
+- GraphicsMagick
+- AdvPng
 
 # Building
 
diff --git a/Tupfile.lua b/Tupfile.lua
index aa0a6aa1..40b36107 100644
--- a/Tupfile.lua
+++ b/Tupfile.lua
@@ -24,7 +24,26 @@ for file in iglob{"src/models/back-shiny/*", "src/models/back-shiny-cosmetic/*"}
     tup.rule(file, "ln -s ../../../%f %o", "build/ps/ani-back-shiny/" .. output)
 end
 
+
+function fbsprite(input, output)
+    tup.foreach_rule(
+        input,
+        "^ fbsprite %f^ tools/fbsprite.sh %f %o",
+        output
+    )
+end
+
+function twittersprite(input, output)
+    tup.foreach_rule(
+        input,
+        "^ twittersprite %f^ tools/twittersprite.sh %f %o",
+        output
+    )
+end
+
 for file in iglob{"src/models/front/*"} do
-    local output = toSmogonAlias(decodeFS(tup.base(file))) .. "." .. tup.ext(file)
-    tup.rule(file, "ln -s ../../../%f %o", "build/smogon/xy/" .. output)
-end
\ No newline at end of file
+    local base = toSmogonAlias(decodeFS(tup.base(file)))
+    tup.foreach_rule(file, "ln -s ../../../%f %o", "build/smogon/xy/" .. base .. ".%e")
+    fbsprite(file, "build/smogon/fbsprites/xy/" .. base .. ".png")
+    twittersprite(file, "build/smogon/twittersprites/xy/" .. base .. ".png")
+end
diff --git a/tools/fbsprite.sh b/tools/fbsprite.sh
new file mode 100755
index 00000000..4d742a74
--- /dev/null
+++ b/tools/fbsprite.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# Smogdex Facebook social images
+
+set -e
+
+gm convert $1'[0]' -trim -resize 150x150 -background white -gravity center -extent 198x198 -bordercolor black -border 1 $2
+advpng -z $2
diff --git a/tools/twittersprite.sh b/tools/twittersprite.sh
new file mode 100755
index 00000000..ca7f15e5
--- /dev/null
+++ b/tools/twittersprite.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# Smogdex Twitter social images
+
+set -e
+
+gm convert $1'[0]' -trim -resize 115x115 -background white -gravity center -extent 120x120 $2
+advpng -z $2