diff --git a/README.md b/README.md
index 3ce352e..61d9121 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@
 **Boost your development and feel free to use your imagination!**
 
 ### Learn ###
-- Website: Find out more about PixiJS on the [offical website](http://www.pixijs.com/).
+- Website: Find out more about PixiJS on the [official website](http://www.pixijs.com/).
 - Getting started: Check out @kittykatattack's comprehensive [tutorial](https://github.com/kittykatattack/learningPixi).
 - Examples: Get stuck right in and play around with PixiJS code and features right [here](http://pixijs.github.io/examples/)!
 - Docs: Get to know the PixiJS API by checking out the [docs](https://pixijs.github.io/docs/).

diff --git a/README.md b/README.md
index 3ce352e..61d9121 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@
 **Boost your development and feel free to use your imagination!**
 
 ### Learn ###
-- Website: Find out more about PixiJS on the [offical website](http://www.pixijs.com/).
+- Website: Find out more about PixiJS on the [official website](http://www.pixijs.com/).
 - Getting started: Check out @kittykatattack's comprehensive [tutorial](https://github.com/kittykatattack/learningPixi).
 - Examples: Get stuck right in and play around with PixiJS code and features right [here](http://pixijs.github.io/examples/)!
 - Docs: Get to know the PixiJS API by checking out the [docs](https://pixijs.github.io/docs/).
diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index cf379a3..e4a6152 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -53,7 +53,7 @@
      * @param {number} [options.backgroundColor=0x000000] - The background color of the rendered area
      *  (shown if not transparent).
      * @param {boolean} [options.legacy=false] - If true PixiJS will aim to ensure compatibility
-     *  with older / less advanced devices. If you experiance unexplained flickering try setting this to true.
+     *  with older / less advanced devices. If you experience unexplained flickering try setting this to true.
      * @param {string} [options.powerPreference] - Parameter passed to webgl context, set to "high-performance"
      *  for devices with dual graphics card
      */

diff --git a/README.md b/README.md
index 3ce352e..61d9121 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@
 **Boost your development and feel free to use your imagination!**
 
 ### Learn ###
-- Website: Find out more about PixiJS on the [offical website](http://www.pixijs.com/).
+- Website: Find out more about PixiJS on the [official website](http://www.pixijs.com/).
 - Getting started: Check out @kittykatattack's comprehensive [tutorial](https://github.com/kittykatattack/learningPixi).
 - Examples: Get stuck right in and play around with PixiJS code and features right [here](http://pixijs.github.io/examples/)!
 - Docs: Get to know the PixiJS API by checking out the [docs](https://pixijs.github.io/docs/).
diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index cf379a3..e4a6152 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -53,7 +53,7 @@
      * @param {number} [options.backgroundColor=0x000000] - The background color of the rendered area
      *  (shown if not transparent).
      * @param {boolean} [options.legacy=false] - If true PixiJS will aim to ensure compatibility
-     *  with older / less advanced devices. If you experiance unexplained flickering try setting this to true.
+     *  with older / less advanced devices. If you experience unexplained flickering try setting this to true.
      * @param {string} [options.powerPreference] - Parameter passed to webgl context, set to "high-performance"
      *  for devices with dual graphics card
      */
diff --git a/src/core/renderers/webgl/filters/Filter.js b/src/core/renderers/webgl/filters/Filter.js
index 2697445..72ee0eb 100644
--- a/src/core/renderers/webgl/filters/Filter.js
+++ b/src/core/renderers/webgl/filters/Filter.js
@@ -60,7 +60,7 @@
         // TODO we could cache this!
         this.glShaders = {};
 
-        // used for cacheing.. sure there is a better way!
+        // used for caching.. sure there is a better way!
         if (!SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc])
         {
             SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc] = uid();

diff --git a/README.md b/README.md
index 3ce352e..61d9121 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@
 **Boost your development and feel free to use your imagination!**
 
 ### Learn ###
-- Website: Find out more about PixiJS on the [offical website](http://www.pixijs.com/).
+- Website: Find out more about PixiJS on the [official website](http://www.pixijs.com/).
 - Getting started: Check out @kittykatattack's comprehensive [tutorial](https://github.com/kittykatattack/learningPixi).
 - Examples: Get stuck right in and play around with PixiJS code and features right [here](http://pixijs.github.io/examples/)!
 - Docs: Get to know the PixiJS API by checking out the [docs](https://pixijs.github.io/docs/).
diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index cf379a3..e4a6152 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -53,7 +53,7 @@
      * @param {number} [options.backgroundColor=0x000000] - The background color of the rendered area
      *  (shown if not transparent).
      * @param {boolean} [options.legacy=false] - If true PixiJS will aim to ensure compatibility
-     *  with older / less advanced devices. If you experiance unexplained flickering try setting this to true.
+     *  with older / less advanced devices. If you experience unexplained flickering try setting this to true.
      * @param {string} [options.powerPreference] - Parameter passed to webgl context, set to "high-performance"
      *  for devices with dual graphics card
      */
diff --git a/src/core/renderers/webgl/filters/Filter.js b/src/core/renderers/webgl/filters/Filter.js
index 2697445..72ee0eb 100644
--- a/src/core/renderers/webgl/filters/Filter.js
+++ b/src/core/renderers/webgl/filters/Filter.js
@@ -60,7 +60,7 @@
         // TODO we could cache this!
         this.glShaders = {};
 
-        // used for cacheing.. sure there is a better way!
+        // used for caching.. sure there is a better way!
         if (!SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc])
         {
             SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc] = uid();
diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 60a6374..6c57418 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -246,7 +246,7 @@
 
         let shader = filter.glShaders[renderer.CONTEXT_UID];
 
-        // cacheing..
+        // caching..
         if (!shader)
         {
             if (filter.glShaderKey)
@@ -359,7 +359,7 @@
             shader.uniforms.filterClamp = filterClamp;
         }
 
-        // TODO Cacheing layer..
+        // TODO Caching layer..
         for (const i in uniformData)
         {
             const type = uniformData[i].type;
@@ -556,7 +556,7 @@
     /**
      * Gets a Power-of-Two render texture.
      *
-     * TODO move to a seperate class could be on renderer?
+     * TODO move to a separate class could be on renderer?
      * also - could cause issue with multiple contexts?
      *
      * @private

diff --git a/README.md b/README.md
index 3ce352e..61d9121 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@
 **Boost your development and feel free to use your imagination!**
 
 ### Learn ###
-- Website: Find out more about PixiJS on the [offical website](http://www.pixijs.com/).
+- Website: Find out more about PixiJS on the [official website](http://www.pixijs.com/).
 - Getting started: Check out @kittykatattack's comprehensive [tutorial](https://github.com/kittykatattack/learningPixi).
 - Examples: Get stuck right in and play around with PixiJS code and features right [here](http://pixijs.github.io/examples/)!
 - Docs: Get to know the PixiJS API by checking out the [docs](https://pixijs.github.io/docs/).
diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index cf379a3..e4a6152 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -53,7 +53,7 @@
      * @param {number} [options.backgroundColor=0x000000] - The background color of the rendered area
      *  (shown if not transparent).
      * @param {boolean} [options.legacy=false] - If true PixiJS will aim to ensure compatibility
-     *  with older / less advanced devices. If you experiance unexplained flickering try setting this to true.
+     *  with older / less advanced devices. If you experience unexplained flickering try setting this to true.
      * @param {string} [options.powerPreference] - Parameter passed to webgl context, set to "high-performance"
      *  for devices with dual graphics card
      */
diff --git a/src/core/renderers/webgl/filters/Filter.js b/src/core/renderers/webgl/filters/Filter.js
index 2697445..72ee0eb 100644
--- a/src/core/renderers/webgl/filters/Filter.js
+++ b/src/core/renderers/webgl/filters/Filter.js
@@ -60,7 +60,7 @@
         // TODO we could cache this!
         this.glShaders = {};
 
-        // used for cacheing.. sure there is a better way!
+        // used for caching.. sure there is a better way!
         if (!SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc])
         {
             SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc] = uid();
diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 60a6374..6c57418 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -246,7 +246,7 @@
 
         let shader = filter.glShaders[renderer.CONTEXT_UID];
 
-        // cacheing..
+        // caching..
         if (!shader)
         {
             if (filter.glShaderKey)
@@ -359,7 +359,7 @@
             shader.uniforms.filterClamp = filterClamp;
         }
 
-        // TODO Cacheing layer..
+        // TODO Caching layer..
         for (const i in uniformData)
         {
             const type = uniformData[i].type;
@@ -556,7 +556,7 @@
     /**
      * Gets a Power-of-Two render texture.
      *
-     * TODO move to a seperate class could be on renderer?
+     * TODO move to a separate class could be on renderer?
      * also - could cause issue with multiple contexts?
      *
      * @private
diff --git a/src/core/renderers/webgl/managers/StencilManager.js b/src/core/renderers/webgl/managers/StencilManager.js
index 91edfa5..714de5a 100644
--- a/src/core/renderers/webgl/managers/StencilManager.js
+++ b/src/core/renderers/webgl/managers/StencilManager.js
@@ -58,7 +58,7 @@
 
         this.stencilMaskStack.push(graphics);
 
-        // Increment the refference stencil value where the new mask overlaps with the old ones.
+        // Increment the reference stencil value where the new mask overlaps with the old ones.
         gl.colorMask(false, false, false, false);
         gl.stencilFunc(gl.EQUAL, prevMaskCount, this._getBitwiseMask());
         gl.stencilOp(gl.KEEP, gl.KEEP, gl.INCR);
@@ -86,7 +86,7 @@
         }
         else
         {
-            // Decrement the refference stencil value where the popped mask overlaps with the other ones
+            // Decrement the reference stencil value where the popped mask overlaps with the other ones
             gl.colorMask(false, false, false, false);
             gl.stencilOp(gl.KEEP, gl.KEEP, gl.DECR);
             this.renderer.plugins.graphics.render(graphics);

diff --git a/README.md b/README.md
index 3ce352e..61d9121 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@
 **Boost your development and feel free to use your imagination!**
 
 ### Learn ###
-- Website: Find out more about PixiJS on the [offical website](http://www.pixijs.com/).
+- Website: Find out more about PixiJS on the [official website](http://www.pixijs.com/).
 - Getting started: Check out @kittykatattack's comprehensive [tutorial](https://github.com/kittykatattack/learningPixi).
 - Examples: Get stuck right in and play around with PixiJS code and features right [here](http://pixijs.github.io/examples/)!
 - Docs: Get to know the PixiJS API by checking out the [docs](https://pixijs.github.io/docs/).
diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index cf379a3..e4a6152 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -53,7 +53,7 @@
      * @param {number} [options.backgroundColor=0x000000] - The background color of the rendered area
      *  (shown if not transparent).
      * @param {boolean} [options.legacy=false] - If true PixiJS will aim to ensure compatibility
-     *  with older / less advanced devices. If you experiance unexplained flickering try setting this to true.
+     *  with older / less advanced devices. If you experience unexplained flickering try setting this to true.
      * @param {string} [options.powerPreference] - Parameter passed to webgl context, set to "high-performance"
      *  for devices with dual graphics card
      */
diff --git a/src/core/renderers/webgl/filters/Filter.js b/src/core/renderers/webgl/filters/Filter.js
index 2697445..72ee0eb 100644
--- a/src/core/renderers/webgl/filters/Filter.js
+++ b/src/core/renderers/webgl/filters/Filter.js
@@ -60,7 +60,7 @@
         // TODO we could cache this!
         this.glShaders = {};
 
-        // used for cacheing.. sure there is a better way!
+        // used for caching.. sure there is a better way!
         if (!SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc])
         {
             SOURCE_KEY_MAP[this.vertexSrc + this.fragmentSrc] = uid();
diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 60a6374..6c57418 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -246,7 +246,7 @@
 
         let shader = filter.glShaders[renderer.CONTEXT_UID];
 
-        // cacheing..
+        // caching..
         if (!shader)
         {
             if (filter.glShaderKey)
@@ -359,7 +359,7 @@
             shader.uniforms.filterClamp = filterClamp;
         }
 
-        // TODO Cacheing layer..
+        // TODO Caching layer..
         for (const i in uniformData)
         {
             const type = uniformData[i].type;
@@ -556,7 +556,7 @@
     /**
      * Gets a Power-of-Two render texture.
      *
-     * TODO move to a seperate class could be on renderer?
+     * TODO move to a separate class could be on renderer?
      * also - could cause issue with multiple contexts?
      *
      * @private
diff --git a/src/core/renderers/webgl/managers/StencilManager.js b/src/core/renderers/webgl/managers/StencilManager.js
index 91edfa5..714de5a 100644
--- a/src/core/renderers/webgl/managers/StencilManager.js
+++ b/src/core/renderers/webgl/managers/StencilManager.js
@@ -58,7 +58,7 @@
 
         this.stencilMaskStack.push(graphics);
 
-        // Increment the refference stencil value where the new mask overlaps with the old ones.
+        // Increment the reference stencil value where the new mask overlaps with the old ones.
         gl.colorMask(false, false, false, false);
         gl.stencilFunc(gl.EQUAL, prevMaskCount, this._getBitwiseMask());
         gl.stencilOp(gl.KEEP, gl.KEEP, gl.INCR);
@@ -86,7 +86,7 @@
         }
         else
         {
-            // Decrement the refference stencil value where the popped mask overlaps with the other ones
+            // Decrement the reference stencil value where the popped mask overlaps with the other ones
             gl.colorMask(false, false, false, false);
             gl.stencilOp(gl.KEEP, gl.KEEP, gl.DECR);
             this.renderer.plugins.graphics.render(graphics);
diff --git a/src/core/renderers/webgl/utils/RenderTarget.js b/src/core/renderers/webgl/utils/RenderTarget.js
index cf2e0ce..167de74 100644
--- a/src/core/renderers/webgl/utils/RenderTarget.js
+++ b/src/core/renderers/webgl/utils/RenderTarget.js
@@ -219,7 +219,7 @@
      */
     activate()
     {
-        // TOOD refactor usage of frame..
+        // TODO refactor usage of frame..
         const gl = this.gl;
 
         // make sure the texture is unbound!