diff --git a/README.md b/README.md
index 06af211..000b90f 100644
--- a/README.md
+++ b/README.md
@@ -80,6 +80,7 @@ feature.contextMenu
 feature.css3Dtransform
 feature.cssTransform
 feature.cssTransition
+feature.cssFilter
 feature.defer
 feature.deviceMotion
 feature.deviceOrientation
@@ -87,6 +88,7 @@ feature.geolocation
 feature.historyAPI
 feature.placeholder
 feature.localStorage
+feature.RTCPeerConnection
 feature.matchMedia
 feature.pictureElement
 feature.querySelectorAll
diff --git a/feature.js b/feature.js
index 52dbbf9..01add34 100644
--- a/feature.js
+++ b/feature.js
@@ -5,9 +5,9 @@
  * http://featurejs.com
  *
  * CSS 3D Transform, CSS Transform, CSS Transition, Canvas, SVG,
- * addEventListener, querySelectorAll, matchMedia, classList API,
- * placeholder, localStorage, History API, Viewport Units, REM Units,
- * CORS, WebGL, Service Worker, Context Menu, Geolocation,
+ * addEventListener, querySelectorAll, matchMedia, RTCPeerConnection,
+ * classList API, placeholder, localStorage, History API, Viewport Units,
+ * REM Units, CORS, WebGL, Service Worker, Context Menu, Geolocation,
  * Device Motion, Device Orientation, Touch, Async, Defer,
  * Srcset, Sizes & Picture Element.
  *
@@ -17,7 +17,7 @@
  *   console.log("webGL supported!");
  * }
  *
- * Author: @viljamis, https://viljamis.com
+ * Author: @viljamis, https://viljamis.com | @raulsi, http://raulsi.in
  */
 
 /* globals DocumentTouch */
@@ -100,6 +100,12 @@
       return !!test;
     })(),
 
+    // Test if CSS filter are supported
+    cssFilter : (function() {
+      var test = util.pfx("filter") !== null;
+      return !!test;
+    })(),
+
     // Test if addEventListener is supported
     addEventListener : !!window.addEventListener,
 
@@ -109,6 +115,19 @@
     // Test if matchMedia is supported
     matchMedia : !!window.matchMedia,
 
+    // Test if RTCPeerConnection is supported
+    RTCPeerConnection : (function(){
+      var servers = null;
+      try {
+        var RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
+        var rtcpconn = new RTCPeerConnection(servers);
+        rtcpconn.close();
+        return true;
+      } catch (err) {
+        return false;
+      }
+    })(),
+
     // Test if Device Motion is supported
     deviceMotion : ("DeviceMotionEvent" in window),
 
diff --git a/feature.min.js b/feature.min.js
index 6282151..adcbc6c 100644
--- a/feature.min.js
+++ b/feature.min.js
@@ -1,6 +1 @@
-/*! FEATURE.JS 1.0.0, http://featurejs.com */
-;(function(b,c,k){function g(){}var d=c.documentElement,a={create:function(e){return c.createElement(e)},old:!!/(Android\s(1.|2.))|(Silk\/1.)/i.test(navigator.userAgent),pfx:function(){var e=c.createElement("dummy").style,b=["Webkit","Moz","O","ms"],a={};return function(c){if("undefined"===typeof a[c]){var f=c.charAt(0).toUpperCase()+c.substr(1),f=(c+" "+b.join(f+" ")+f).split(" ");a[c]=null;for(var d in f)if(e[f[d]]!==k){a[c]=f[d];break}}return a[c]}}()},l=!(a.old||null===a.pfx("perspective")),m=
-!(a.old||null===a.pfx("transformOrigin")),n=null!==a.pfx("transition"),p=!!b.addEventListener,q=!!c.querySelectorAll,r=!!b.matchMedia,t="placeholder"in a.create("input"),h;try{localStorage.setItem("x","x"),localStorage.removeItem("x"),h=!0}catch(e){h=!1}g.prototype={constructor:g,css3Dtransform:l,cssTransform:m,cssTransition:n,addEventListener:p,querySelectorAll:q,matchMedia:r,deviceMotion:"DeviceMotionEvent"in b,deviceOrientation:"DeviceOrientationEvent"in b,contextMenu:"contextMenu"in d&&"HTMLMenuItemElement"in
-b,classList:"classList"in d,placeholder:t,localStorage:h,historyAPI:b.history&&"pushState"in b.history,serviceWorker:"serviceWorker"in navigator,viewportUnit:function(e){try{return e.style.width="1vw",""!==e.style.width}catch(a){return!1}}(a.create("dummy")),remUnit:function(a){try{return a.style.width="1rem",""!==a.style.width}catch(b){return!1}}(a.create("dummy")),canvas:function(a){return!(!a.getContext||!a.getContext("2d"))}(a.create("canvas")),svg:!!c.createElementNS&&!!c.createElementNS("http://www.w3.org/2000/svg",
-"svg").createSVGRect,webGL:function(a){try{return!(!b.WebGLRenderingContext||!a.getContext("webgl")&&!a.getContext("experimental-webgl"))}catch(c){return!1}}(a.create("canvas")),cors:"XMLHttpRequest"in b&&"withCredentials"in new XMLHttpRequest,touch:!!("ontouchstart"in b||b.navigator&&b.navigator.msPointerEnabled&&b.MSGesture||b.DocumentTouch&&c instanceof DocumentTouch),async:"async"in a.create("script"),defer:"defer"in a.create("script"),geolocation:"geolocation"in navigator,srcset:"srcset"in a.create("img"),
-sizes:"sizes"in a.create("img"),pictureElement:"HTMLPictureElement"in b,testAll:function(){var a=" js",b;for(b in this)"testAll"!==b&&"constructor"!==b&&this[b]&&(a+=" "+b);d.className+=a.toLowerCase()}};b.feature=new g})(window,document);
+!function(e,t,n){"use strict";function r(){}function i(){var e=new r;return e}var o=t.documentElement,c={create:function(e){return t.createElement(e)},old:!!/(Android\s(1.|2.))|(Silk\/1.)/i.test(navigator.userAgent),pfx:function(){var e=t.createElement("dummy").style,r=["Webkit","Moz","O","ms"],i={};return function(t){if("undefined"==typeof i[t]){var o=t.charAt(0).toUpperCase()+t.substr(1),c=(t+" "+r.join(o+" ")+o).split(" ");i[t]=null;for(var a in c)if(e[c[a]]!==n){i[t]=c[a];break}}return i[t]}}()};r.prototype={constructor:r,css3Dtransform:function(){var e=!c.old&&null!==c.pfx("perspective");return!!e}(),cssTransform:function(){var e=!c.old&&null!==c.pfx("transformOrigin");return!!e}(),cssTransition:function(){var e=null!==c.pfx("transition");return!!e}(),cssFilter:function(){var e=null!==c.pfx("filter");return!!e}(),addEventListener:!!e.addEventListener,querySelectorAll:!!t.querySelectorAll,matchMedia:!!e.matchMedia,RTCPeerConnection:function(){var t=null;try{var n=e.RTCPeerConnection||e.mozRTCPeerConnection||e.webkitRTCPeerConnection,r=new n(t);return r.close(),!0}catch(i){return!1}}(),deviceMotion:"DeviceMotionEvent"in e,deviceOrientation:"DeviceOrientationEvent"in e,contextMenu:"contextMenu"in o&&"HTMLMenuItemElement"in e,classList:"classList"in o,placeholder:"placeholder"in c.create("input"),localStorage:function(){var e="x";try{return localStorage.setItem(e,e),localStorage.removeItem(e),!0}catch(t){return!1}}(),historyAPI:e.history&&"pushState"in e.history,serviceWorker:"serviceWorker"in navigator,viewportUnit:function(e){try{e.style.width="1vw";var t=""!==e.style.width;return!!t}catch(n){return!1}}(c.create("dummy")),remUnit:function(e){try{e.style.width="1rem";var t=""!==e.style.width;return!!t}catch(n){return!1}}(c.create("dummy")),canvas:function(e){return!(!e.getContext||!e.getContext("2d"))}(c.create("canvas")),svg:!!t.createElementNS&&!!t.createElementNS("http://www.w3.org/2000/svg","svg").createSVGRect,webGL:function(t){try{return!(!e.WebGLRenderingContext||!t.getContext("webgl")&&!t.getContext("experimental-webgl"))}catch(n){return!1}}(c.create("canvas")),cors:"XMLHttpRequest"in e&&"withCredentials"in new XMLHttpRequest,touch:!!("ontouchstart"in e||e.navigator&&e.navigator.msPointerEnabled&&e.MSGesture||e.DocumentTouch&&t instanceof DocumentTouch),async:"async"in c.create("script"),defer:"defer"in c.create("script"),geolocation:"geolocation"in navigator,srcset:"srcset"in c.create("img"),sizes:"sizes"in c.create("img"),pictureElement:"HTMLPictureElement"in e,testAll:function(){var e=" js";for(var t in this)"testAll"!==t&&"constructor"!==t&&this[t]&&(e+=" "+t);o.className+=e.toLowerCase()}},e.feature=i()}(window,document);
\ No newline at end of file
diff --git a/tests/index.html b/tests/index.html
index e5dd62c..6627244 100644
--- a/tests/index.html
+++ b/tests/index.html
@@ -34,6 +34,9 @@ <h4>CSS transitions</h4>
       <p>Requires click event:</p>
       <div class="test transition" style="-webkit-transition: all 1.5s ease; -moz-transition: all 1.5s ease; -ms-transition: all 1.5s ease; -o-transition: all 1.5s ease; transition: all 1.5s ease;"></div>
 
+      <h4>CSS filter</h4>
+      <img id="cssfilter" src="http://featurejs.com/img/appicon.png" class="test" style="-webkit-filter: invert(100%); -moz-filter: invert(100%); -o-filter: invert(100%); -ms-filter: invert(100%); filter: invert(100%);"></div>
+
       <h4>AddEventListener</h4>
       <div class="test" id="addeventlistener"></div>
 
@@ -45,6 +48,9 @@ <h4>QuerySelectorAll</h4>
       <h4>MatchMedia</h4>
       <div class="test" id="matchmedia"></div>
 
+      <h4>RTCPeerConnection</h4>
+      <div class="test" id="rtcpeerconnection"></div>
+
       <h4>ClassList API</h4>
       <div class="test" id="classlist"></div>
 
@@ -142,10 +148,12 @@ <h4>Context Menu</h4>
       log(feature.css3Dtransform, "CSS 3D transforms");
       log(feature.cssTransform, "CSS transforms");
       log(feature.cssTransition, "CSS transitions");
+      log(feature.cssFilter, "CSS filter");
       log(feature.contextMenu, "Context Menu");
       log(feature.addEventListener, "AddEventListener");
       log(feature.querySelectorAll, "QuerySelectorAll");
       log(feature.matchMedia, "MatchMedia");
+      log(feature.RTCPeerConnection, "RTCPeerConnection");
       log(feature.async, "Async attribute");
       log(feature.defer, "Defer attribute");
       log(feature.deviceMotion, "DeviceMotion");
@@ -190,6 +198,12 @@ <h4>Context Menu</h4>
         });
       } catch(err) {}
 
+      // Image Filer
+      if (feature.cssFilter) {
+        var needsTransform = document.getElementById("cssfilter");
+        needsTransform.className += " active";
+      }
+
       // AddEventListener
       try {
         var needsListener = document.getElementById("addeventlistener");
@@ -215,6 +229,14 @@ <h4>Context Menu</h4>
         }
       } catch(err) {}
 
+      // RTCPeerConnection
+      try {
+        var needsRTCPeerConnection = document.getElementById("rtcpeerconnection");
+          if(feature.RTCPeerConnection){
+            needsRTCPeerConnection.className += " active";
+          }
+      } catch(err) {}
+
       // ClassList API
       try {
         var needsClassList = document.getElementById("classlist");