diff --git a/.eslintignore b/.eslintignore
index d59d3debf0eb..e3db34109bfb 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -14,7 +14,6 @@ obj*/**
 # We ignore all these directories by default, until we get them enabled.
 # If you are enabling a directory, please add directory specific exclusions
 # below.
-image/**
 layout/**
 netwerk/cookie/test/browser/**
 netwerk/test/browser/**
diff --git a/.eslintrc.js b/.eslintrc.js
index 85ea9edaf271..2da37d8ab09c 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -158,8 +158,40 @@ module.exports = {
       "quotes": "off",
       "semi": "off",
       "space-infix-ops": "off",
+    }
+  }, {
+    "files": [
+      "image/**",
+    ],
+    "rules": {
+      "mozilla/consistent-if-bracing": "off",
+      "mozilla/use-chromeutils-generateqi": "off",
+      "mozilla/use-services": "off",
+      "no-array-constructor": "off",
+      "no-implied-eval": "off",
+      "no-redeclare": "off",
+      "no-self-assign": "off",
+      "no-throw-literal": "off",
+      "no-undef": "off",
+      "no-unneeded-ternary": "off",
+      "no-unused-vars": "off",
 
-
+      // Not enabling the rules below for now pending prettier roll-out.
+      "brace-style": "off",
+      "comma-dangle": "off",
+      "comma-spacing": "off",
+      "key-spacing": "off",
+      "keyword-spacing": "off",
+      "no-extra-semi": "off",
+      "no-tabs": "off",
+      "no-mixed-spaces-and-tabs": "off",
+      "no-multi-spaces": "off",
+      "no-trailing-spaces": "off",
+      "padded-blocks": "off",
+      "quotes": "off",
+      "semi": "off",
+      "space-before-function-paren": "off",
+      "space-infix-ops": "off",
     }
   }]
 };
diff --git a/image/test/mochitest/animationPolling.js b/image/test/mochitest/animationPolling.js
index 6f5e7c889f25..c4ad8c0959e4 100644
--- a/image/test/mochitest/animationPolling.js
+++ b/image/test/mochitest/animationPolling.js
@@ -229,14 +229,12 @@ AnimationTest.prototype.setupPolledImage = function ()
 
       this.cleanUpAndFinish();
     }
-  } else {
-    if (!gIsRefImageLoaded) {
+  } else if (!gIsRefImageLoaded) {
       this.myImage = new Image();
       this.myImage.onload = reuseImageCallback;
       document.getElementById(this.imageElementId).setAttribute('src',
         this.referenceElementId);
     }
-  }
 }
 
 AnimationTest.prototype.checkImage = function ()
diff --git a/image/test/mochitest/test_animation_operators.html b/image/test/mochitest/test_animation_operators.html
index 80fc8d35650f..0e4b7c35e1eb 100644
--- a/image/test/mochitest/test_animation_operators.html
+++ b/image/test/mochitest/test_animation_operators.html
@@ -138,7 +138,7 @@ function startTest(i)
                  testData.op + " " + testData.test + " " + testData.reference);
       RemoveFinishDependency();
     }
-    var iframe = { element: element, loaded: false };
+    var iframe = { element, loaded: false };
 
     return iframe;
   }
diff --git a/image/test/mochitest/test_bug490949.html b/image/test/mochitest/test_bug490949.html
index 327a052814a1..1616bd0b8cbf 100644
--- a/image/test/mochitest/test_bug490949.html
+++ b/image/test/mochitest/test_bug490949.html
@@ -44,7 +44,7 @@ RemoteCanvas.prototype.load = function(cb) {
     // Here is where the magic happens... add a listener to the
     // frame's onload event - it will call handleEvent
     iframe.addEventListener("load", this, true);
-    //append to the end of the page
+    // append to the end of the page
     window.document.body.appendChild(iframe);
 };
 
@@ -60,7 +60,7 @@ RemoteCanvas.prototype.handleEvent = function() {
     // SpecialPowers.snapshotRect method
     var remoteWindow = ldrFrame.contentWindow;
 
-    //Draw canvas
+    // Draw canvas
     canvas.style.width = RemoteCanvas.CANVAS_WIDTH + "px";
     canvas.style.height = RemoteCanvas.CANVAS_HEIGHT + "px";
     canvas.width = RemoteCanvas.CANVAS_WIDTH;
diff --git a/image/test/mochitest/test_bug496292.html b/image/test/mochitest/test_bug496292.html
index f1ed0df111b4..5f64bf4148c3 100644
--- a/image/test/mochitest/test_bug496292.html
+++ b/image/test/mochitest/test_bug496292.html
@@ -44,7 +44,7 @@ RemoteCanvas.prototype.load = function(cb) {
     // Here is where the magic happens... add a listener to the
     // frame's onload event - it will call handleEvent
     iframe.addEventListener("load", this, true);
-    //append to the end of the page
+    // append to the end of the page
     window.document.body.appendChild(iframe);
 };
 
@@ -60,7 +60,7 @@ RemoteCanvas.prototype.handleEvent = function() {
     // SpecialPowers.snapshotRect method
     var remoteWindow = ldrFrame.contentWindow;
 
-    //Draw canvas
+    // Draw canvas
     canvas.style.width = RemoteCanvas.CANVAS_WIDTH + "px";
     canvas.style.height = RemoteCanvas.CANVAS_HEIGHT + "px";
     canvas.width = RemoteCanvas.CANVAS_WIDTH;
diff --git a/image/test/mochitest/test_net_failedtoprocess.html b/image/test/mochitest/test_net_failedtoprocess.html
index 8f0222b098c1..fdf8794dccff 100644
--- a/image/test/mochitest/test_net_failedtoprocess.html
+++ b/image/test/mochitest/test_net_failedtoprocess.html
@@ -23,14 +23,14 @@ var obs = Cc["@mozilla.org/observer-service;1"].getService();
 obs = obs.QueryInterface(Ci.nsIObserverService);
 
 var observer = {
-  QueryInterface: function (aIID) {
+  QueryInterface (aIID) {
     if (aIID.equals(Ci.nsISupports) ||
         aIID.equals(Ci.nsIObserver))
       return this;
     throw Cr.NS_ERROR_NO_INTERFACE;
   },
 
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     ok(topic == "net:failed-to-process-uri-content", "wrong topic");
     subject = subject.QueryInterface(Ci.nsIURI);
     is(subject.asciiSpec, "http://mochi.test:8888/tests/image/test/mochitest/invalid.jpg", "wrong subject");
diff --git a/image/test/unit/async_load_tests.js b/image/test/unit/async_load_tests.js
index c2afbd7f5649..843b15e85520 100644
--- a/image/test/unit/async_load_tests.js
+++ b/image/test/unit/async_load_tests.js
@@ -40,7 +40,7 @@ function checkClone(other_listener, aRequest)
   do_test_pending();
 
   // For as long as clone notification is synchronous, we can't test the clone state reliably.
-  var listener = new ImageListener(null, function(foo, bar) { do_test_finished(); } /*getCloneStopCallback(other_listener)*/);
+  var listener = new ImageListener(null, function(foo, bar) { do_test_finished(); } /* getCloneStopCallback(other_listener)*/);
   listener.synchronous = false;
   var outer = Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools)
                 .createScriptedObserver(listener);
@@ -123,7 +123,7 @@ function getChannelLoadImageStopCallback(streamlistener, next)
 function checkSecondChannelLoad()
 {
   do_test_pending();
-  var channel = NetUtil.newChannel({uri: uri, loadUsingSystemPrincipal: true});
+  var channel = NetUtil.newChannel({uri, loadUsingSystemPrincipal: true});
   var channellistener = new ChannelListener();
   channel.asyncOpen(channellistener);
 
@@ -148,7 +148,7 @@ function run_loadImageWithChannel_tests()
   gCurrentLoader = Cc["@mozilla.org/image/loader;1"].createInstance(Ci.imgILoader);
 
   do_test_pending();
-  var channel =  NetUtil.newChannel({uri: uri, loadUsingSystemPrincipal: true});
+  var channel =  NetUtil.newChannel({uri, loadUsingSystemPrincipal: true});
   var channellistener = new ChannelListener();
   channel.asyncOpen(channellistener);
 
diff --git a/image/test/unit/test_encoder_png.js b/image/test/unit/test_encoder_png.js
index e552f6298665..1c719c4e5a0c 100644
--- a/image/test/unit/test_encoder_png.js
+++ b/image/test/unit/test_encoder_png.js
@@ -193,7 +193,7 @@ function makeDataURLFromAsync(encoder, mimetype, expected) {
 
         var asyncReader =
         {
-            onInputStreamReady: function(stream)
+            onInputStreamReady(stream)
             {
                 binarystream.setInputStream(stream);
                 var available = 0;
diff --git a/image/test/unit/test_imgtools.js b/image/test/unit/test_imgtools.js
index c133df9b4e66..fc854954211c 100644
--- a/image/test/unit/test_imgtools.js
+++ b/image/test/unit/test_imgtools.js
@@ -646,18 +646,18 @@ var testData =
 for(var i=0; i<testData.length; ++i) {
     var dict = testData[i];
 
-    var imgFile = do_get_file(dict["refImage"]);
+    var imgFile = do_get_file(dict.refImage);
     var istream = getFileInputStream(imgFile);
     var refBytes = streamToArray(istream);
 
-    imgFile = do_get_file(dict["preImage"]);
+    imgFile = do_get_file(dict.preImage);
     istream = getFileInputStream(imgFile);
 
     var buffer = NetUtil.readInputStreamToString(istream, istream.available());
     var container = imgTools.decodeImageFromBuffer(buffer, buffer.length,
-                                                   dict["preImageMimeType"]);
+                                                   dict.preImageMimeType);
 
-    istream = imgTools.encodeImage(container, dict["refImageMimeType"]);
+    istream = imgTools.encodeImage(container, dict.refImageMimeType);
 
     var sstream = Cc["@mozilla.org/storagestream;1"].
 	          createInstance(Ci.nsIStorageStream);
@@ -666,7 +666,7 @@ for(var i=0; i<testData.length; ++i) {
     var bostream = Cc["@mozilla.org/network/buffered-output-stream;1"].
 	           createInstance(Ci.nsIBufferedOutputStream);
 
-    //use a tiny buffer to make sure the image data doesn't fully fit in it
+    // use a tiny buffer to make sure the image data doesn't fully fit in it
     bostream.init(ostream, 8);
 
     bostream.writeFrom(istream, istream.available());
diff --git a/image/test/unit/test_private_channel.js b/image/test/unit/test_private_channel.js
index 2b1895e76d50..934f34d29305 100644
--- a/image/test/unit/test_private_channel.js
+++ b/image/test/unit/test_private_channel.js
@@ -37,8 +37,8 @@ function setup_chan(path, isPrivate, callback) {
   var securityFlags = Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL;
   var principal = Services.scriptSecurityManager
                           .createCodebasePrincipal(uri, {privateBrowsingId: isPrivate ? 1 : 0});
-  var chan =  NetUtil.newChannel({uri: uri, loadingPrincipal: principal,
-                                  securityFlags: securityFlags,
+  var chan =  NetUtil.newChannel({uri, loadingPrincipal: principal,
+                                  securityFlags,
                                   contentPolicyType: Ci.nsIContentPolicy.TYPE_INTERNAL_IMAGE});
   chan.notificationCallbacks = isPrivate ? privateLoadContext
                                          : nonPrivateLoadContext;