diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Tom Sydney Kerckhove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,3 @@
+import Distribution.Simple
+
+main = defaultMain
diff --git a/src/Zifter/GoogleJavaFormat.hs b/src/Zifter/GoogleJavaFormat.hs
new file mode 100644
--- /dev/null
+++ b/src/Zifter/GoogleJavaFormat.hs
@@ -0,0 +1,87 @@
+{-# LANGUAGE TemplateHaskell #-}
+
+module Zifter.GoogleJavaFormat where
+
+import Control.Monad
+
+import System.Exit
+import qualified System.FilePath as FP
+import System.IO
+import System.Process
+
+import Safe
+
+import Path
+import Path.IO
+
+import Zifter.Zift
+
+googleJavaFormatZift :: Zift ()
+googleJavaFormatZift = do
+    format <- getJavaFormatter
+    rd <- getRootDir
+    fs <- liftIO $ snd <$> listDirRecur rd
+    let sources =
+            filter (not . hidden) $ filter ((== ".java") . fileExtension) fs
+    forZ_ sources format
+
+getJavaFormatter :: Zift (Path Abs File -> Zift ())
+getJavaFormatter = do
+    downloadJavaFormatIfMissing
+    jarFile <- javaFormatterJarFile
+    pure $ \abspath ->
+        runZiftCommand $
+        unwords
+            [ "java"
+            , "-jar"
+            , toFilePath jarFile
+            , "--replace"
+            , toFilePath abspath
+            ]
+
+downloadJavaFormatIfMissing :: Zift ()
+downloadJavaFormatIfMissing = do
+    jarFile <- javaFormatterJarFile
+    exists <- doesFileExist jarFile
+    unless exists $ do
+        ensureDir $ parent jarFile
+        runZiftCommand $
+            unwords
+                [ wgetCmd
+                , javaFormatterUrl
+                , "--output-document"
+                , toFilePath jarFile
+                ]
+
+javaFormatDir :: Zift (Path Abs Dir)
+javaFormatDir = (</> $(mkRelDir "google-java-format")) <$> getTempDir
+
+javaFormatterJarFile :: Zift (Path Abs File)
+javaFormatterJarFile =
+    (</> $(mkRelFile "google-java-format-1.0-all-deps.jar")) <$> javaFormatDir
+
+wgetCmd :: String
+wgetCmd = "wget"
+
+javaFormatterUrl :: FilePath
+javaFormatterUrl =
+    "https://github.com/google/google-java-format/releases/download/google-java-format-1.0/google-java-format-1.0-all-deps.jar"
+
+hidden :: Path Abs t -> Bool
+hidden = any ((Just '.' ==) . headMay) . FP.splitPath . toFilePath
+
+runZiftCommand :: String -> Zift ()
+runZiftCommand command = do
+    let cp = shell command
+    (_, mouth, merrh, ph) <- liftIO $ createProcess cp
+    ec <- liftIO $ waitForProcess ph
+    case mouth of
+        Nothing -> pure ()
+        Just outh -> liftIO (hGetContents outh) >>= printZift
+    case merrh of
+        Nothing -> pure ()
+        Just errh -> liftIO (hGetContents errh) >>= printPreprocessingError
+    case ec of
+        ExitFailure c ->
+            fail $ unwords [command, "failed with exit code", show c]
+        ExitSuccess -> printPreprocessingDone $ unwords [command, "succeeded."]
diff --git a/zifter-google-java-format.cabal b/zifter-google-java-format.cabal
new file mode 100644
--- /dev/null
+++ b/zifter-google-java-format.cabal
@@ -0,0 +1,30 @@
+name: zifter-google-java-format
+version: 0.0.0.0
+cabal-version: >=1.10
+build-type: Simple
+license: MIT
+license-file: LICENSE
+copyright: Copyright: (c) 2017 Tom Sydney Kerckhove
+maintainer: syd.kerckhove@gmail.com
+homepage: http://cs-syd.eu
+synopsis: zifter-google-java-format
+description:
+    zifter-google-java-format
+category: Zift
+author: Tom Sydney Kerckhove
+
+library
+    exposed-modules:
+        Zifter.GoogleJavaFormat
+    build-depends:
+        base >=4.9 && <=5,
+        zifter >=0.0.1.2 && <0.1,
+        path >=0.5 && <0.6,
+        path-io >=1.2 && <1.3,
+        process >=1.4 && <1.5,
+        safe >=0.3 && <0.4,
+        filepath >=1.4 && <1.5
+    default-language: Haskell2010
+    hs-source-dirs: src/
+    ghc-options: -Wall
+