diff --git a/README.md b/README.md
index b032104..e6512bb 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@
- [Multi-source configuration](#multi-source-configuration)
- [`ix_image_tag`](#iximagetag)
- [Fixed image rendering](#fixed-image-rendering)
+ - [Lazy Loading](#lazy-loading)
- [`ix_picture_tag`](#ixpicturetag)
- [`ix_image_url`](#iximageurl)
- [Usage in Model](#usage-in-model)
@@ -179,6 +180,60 @@ https://assets.imgix.net/image.jpg?ixlib=rails-3.0.2&w=1000&dpr=5&q=
Fixed image rendering will automatically append a variable `q` parameter mapped to each `dpr` parameter when generating a `srcset`. This technique is commonly used to compensate for the increased filesize of high-DPR images. Since high-DPR images are displayed at a higher pixel density on devices, image quality can be lowered to reduce overall filesize without sacrificing perceived visual quality. For more information and examples of this technique in action, see [this blog post](https://blog.imgix.com/2016/03/30/dpr-quality?_ga=utm_medium=referral&utm_source=sdk&utm_campaign=rails-readme). This behavior will respect any overriding `q` value passed in via `url_params` and can be disabled altogether with `srcset_options: { disable_variable_quality: true }`.
+#### Lazy loading
+
+If you'd like to lazy load images, we recommend using [lazysizes](https://github.com/aFarkas/lazysizes). In order to use imgix-rails with lazysizes, you can simply add a `lazy` attribute with `true`:
+
+```erb
+<%= ix_image_tag('image.jpg', lazy: true, url_params: {w: 1000}) %>
+```
+
+Will render the following HTML:
+
+```html
+
+```
+
+A small 1x1 GIF will be shown while the image is loading. Once the image
+has been loaded in the background, provided you have required lazysizes in your
+application, the correct image will be loaded.
+
+You can optionally pass an image to be used as the loading image:
+
+```erb
+<%= ix_image_tag('image.jpg', lazy: 'loading.gif', url_params: {w: 1000}) %>
+```
+
+This will render the following HTML:
+
+```html
+
+```
+
+You can use Imgix for the loading image as long as you use `ix_image_url`:
+
+```erb
+<%= ix_image_tag('image.jpg', lazy: ix_image_url('loading.gif', {w: 1000 }), url_params: {w: 1000}) %>
+```
+
+Then the result would be:
+
+```html
+
+```
+
### `ix_picture_tag`
The `ix_picture_tag` helper method makes it easy to generate `picture` elements in your Rails app. `picture` elements are useful when an images needs to be art directed differently at different screen sizes.
+```
+
+A small 1x1 GIF will be shown while the image is loading. Once the image
+has been loaded in the background, provided you have required lazysizes in your
+application, the correct image will be loaded.
+
+You can optionally pass an image to be used as the loading image:
+
+```erb
+<%= ix_image_tag('image.jpg', lazy: 'loading.gif', url_params: {w: 1000}) %>
+```
+
+This will render the following HTML:
+
+```html
+