diff --git a/shard.lock b/shard.lock
index 42a8367..124a443 100644
--- a/shard.lock
+++ b/shard.lock
@@ -60,6 +60,10 @@ shards:
     git: https://github.com/luckyframework/lucky_task.git
     version: 0.1.0
 
+  monads:
+    git: https://github.com/alex-lairan/monads.git
+    version: 1.0.0
+
   pg:
     git: https://github.com/will/crystal-pg.git
     version: 0.23.2
diff --git a/shard.yml b/shard.yml
index 64132a9..54fdc4a 100644
--- a/shard.yml
+++ b/shard.yml
@@ -26,6 +26,8 @@ dependencies:
   lucky_task:
     github: luckyframework/lucky_task
     version: ~> 0.1.0
+  monads:
+    github: alex-lairan/monads
 development_dependencies:
   lucky_flow:
     github: luckyframework/lucky_flow
diff --git a/spec/classes/embedded_converter_spec.cr b/spec/classes/embedded_converter_spec.cr
new file mode 100644
index 0000000..4b7ec07
--- /dev/null
+++ b/spec/classes/embedded_converter_spec.cr
@@ -0,0 +1,99 @@
+require "../spec_helper"
+
+include Nodes
+
+describe EmbeddedConverter do
+  context "when the mediaResource has an iframeSrc value" do
+    it "returns an EmbeddedContent node" do
+      paragraph = PostResponse::Paragraph.from_json <<-JSON
+        {
+          "text": "",
+          "type": "IFRAME",
+          "href": null,
+          "layout": "INSET_CENTER",
+          "markups": [],
+          "iframe": {
+            "mediaResource": {
+              "id": "abc123",
+              "href": "https://twitter.com/user/status/1",
+              "iframeSrc": "https://cdn.embedly.com/widgets/...",
+              "iframeWidth": 500,
+              "iframeHeight": 281
+            }
+          },
+          "metadata": null
+        }
+      JSON
+
+      result = EmbeddedConverter.convert(paragraph)
+
+      result.should eq(
+        EmbeddedContent.new(
+          src: "https://cdn.embedly.com/widgets/...",
+          originalWidth: 500,
+          originalHeight: 281,
+        )
+      )
+    end
+  end
+
+  context "when the mediaResource has a blank iframeSrc value" do
+    context "and the href is unknown" do
+      it "returns an EmbeddedLink node" do
+        paragraph = PostResponse::Paragraph.from_json <<-JSON
+          {
+            "text": "",
+            "type": "IFRAME",
+            "href": null,
+            "layout": "INSET_CENTER",
+            "markups": [],
+            "iframe": {
+              "mediaResource": {
+                "id": "abc123",
+                "href": "https://example.com",
+                "iframeSrc": "",
+                "iframeWidth": 0,
+                "iframeHeight": 0
+              }
+            },
+            "metadata": null
+          }
+        JSON
+
+        result = EmbeddedConverter.convert(paragraph)
+
+        result.should eq(EmbeddedLink.new(href: "https://example.com"))
+      end
+    end
+
+    context "and the href is gist.github.com" do
+      it "returns an GithubGist node" do
+        paragraph = PostResponse::Paragraph.from_json <<-JSON
+          {
+            "text": "",
+            "type": "IFRAME",
+            "href": null,
+            "layout": "INSET_CENTER",
+            "markups": [],
+            "iframe": {
+              "mediaResource": {
+                "id": "abc123",
+                "href": "https://gist.github.com/user/someid",
+                "iframeSrc": "",
+                "iframeWidth": 0,
+                "iframeHeight": 0
+              }
+            },
+            "metadata": null
+          }
+        JSON
+
+        result = EmbeddedConverter.convert(paragraph)
+
+        result.should eq(
+          GithubGist.new(href: "https://gist.github.com/user/someid")
+        )
+      end
+    end
+  end
+end
diff --git a/spec/classes/paragraph_converter_spec.cr b/spec/classes/paragraph_converter_spec.cr
index 1d31bbb..bac37f5 100644
--- a/spec/classes/paragraph_converter_spec.cr
+++ b/spec/classes/paragraph_converter_spec.cr
@@ -272,7 +272,10 @@ describe ParagraphConverter do
           "markups": [],
           "iframe": {
             "mediaResource": {
-              "href": "https://example.com"
+              "href": "https://example.com",
+              "iframeSrc": "",
+              "iframeWidth": 0,
+              "iframeHeight": 0
             }
           },
           "layout": null,
@@ -312,7 +315,7 @@ describe ParagraphConverter do
         Image.new(src: "1*miroimage.png", originalWidth: 618, originalHeight: 682),
         FigureCaption.new(children: [Text.new("text")] of Child),
       ] of Child),
-      IFrame.new(href: "https://example.com"),
+      EmbeddedLink.new(href: "https://example.com"),
       MixtapeEmbed.new(children: [
         Anchor.new(
           children: [Text.new("Mixtape")] of Child,
diff --git a/spec/components/page_content_spec.cr b/spec/components/page_content_spec.cr
index bbb5877..6272a43 100644
--- a/spec/components/page_content_spec.cr
+++ b/spec/components/page_content_spec.cr
@@ -152,6 +152,24 @@ describe PageContent do
     HTML
   end
 
+  it "renders a GitHub Gist" do
+    page = Page.new(
+      title: "Title",
+      subtitle: nil,
+      author: "Author",
+      created_at: Time.local,
+      nodes: [
+        GithubGist.new(href: "https://gist.github.com/user/some_id"),
+      ] of Child
+    )
+
+    html = PageContent.new(page: page).render_to_string
+
+    html.should eq stripped_html <<-HTML
+      <script src="https://gist.github.com/user/some_id.js"></script>
+    HTML
+  end
+
   it "renders an H3" do
     page = Page.new(
       title: "Title",
@@ -210,7 +228,32 @@ describe PageContent do
     HTML
   end
 
-  it "renders an iframe container" do
+  it "renders embedded content" do
+    page = Page.new(
+      title: "Title",
+      subtitle: nil,
+      author: "Author",
+      created_at: Time.local,
+      nodes: [
+        EmbeddedContent.new(
+          src: "https://example.com",
+          originalWidth: 1000,
+          originalHeight: 600,
+        ),
+      ] of Child
+    )
+
+    html = PageContent.new(page: page).render_to_string
+
+    html.should eq stripped_html <<-HTML
+      <div class="iframe-wrapper">
+        <iframe src="https://example.com" width="800" height="480" frameborder="0" allowfullscreen="true">
+        </iframe>
+      </div>
+    HTML
+  end
+
+  it "renders an embedded link container" do
     page = Page.new(
       title: "Title",
       subtitle: nil,
@@ -218,7 +261,7 @@ describe PageContent do
       created_at: Time.local,
       nodes: [
         Paragraph.new(children: [
-          IFrame.new(href: "https://example.com"),
+          EmbeddedLink.new(href: "https://example.com"),
         ] of Child),
       ] of Child
     )
diff --git a/spec/models/nodes_spec.cr b/spec/models/nodes_spec.cr
index f9a43ac..1eb20b1 100644
--- a/spec/models/nodes_spec.cr
+++ b/spec/models/nodes_spec.cr
@@ -1,9 +1,9 @@
 require "../spec_helper"
 
 module Nodes
-  describe IFrame do
+  describe EmbeddedLink do
     it "returns embedded url with subdomains" do
-      iframe = IFrame.new(href: "https://dev.example.com/page")
+      iframe = EmbeddedLink.new(href: "https://dev.example.com/page")
 
       iframe.domain.should eq("dev.example.com")
     end
@@ -23,4 +23,17 @@ module Nodes
       image.src.should eq("https://cdn-images-1.medium.com/fit/c/800/482/image.png")
     end
   end
+
+  describe EmbeddedContent do
+    it "adjusts the width and height proportionally" do
+      content = EmbeddedContent.new(
+        src: "https://example.com",
+        originalWidth: 1000,
+        originalHeight: 600,
+      )
+
+      content.width.should eq("800")
+      content.height.should eq("480")
+    end
+  end
 end
diff --git a/src/classes/embedded_converter.cr b/src/classes/embedded_converter.cr
new file mode 100644
index 0000000..6848bfc
--- /dev/null
+++ b/src/classes/embedded_converter.cr
@@ -0,0 +1,42 @@
+class EmbeddedConverter
+  include Nodes
+
+  GIST_HOST = "https://gist.github.com"
+
+  getter paragraph : PostResponse::Paragraph
+
+  def self.convert(paragraph : PostResponse::Paragraph) : Embedded | Empty
+    new(paragraph).convert
+  end
+
+  def initialize(@paragraph : PostResponse::Paragraph)
+  end
+
+  def convert : Embedded | Empty
+    Monads::Try(PostResponse::IFrame).new(->{ paragraph.iframe })
+      .to_maybe
+      .fmap(->(iframe : PostResponse::IFrame) { iframe.mediaResource })
+      .fmap(->media_to_embedded(PostResponse::MediaResource))
+      .value_or(Empty.new)
+  end
+
+  private def media_to_embedded(media : PostResponse::MediaResource) : Embedded
+    if media.iframeSrc.blank?
+      custom_embed(media)
+    else
+      EmbeddedContent.new(
+        src: media.iframeSrc,
+        originalWidth: media.iframeWidth,
+        originalHeight: media.iframeHeight
+      )
+    end
+  end
+
+  private def custom_embed(media : PostResponse::MediaResource) : Embedded
+    if media.href.starts_with?(GIST_HOST)
+      GithubGist.new(href: media.href)
+    else
+      EmbeddedLink.new(href: media.href)
+    end
+  end
+end
diff --git a/src/classes/paragraph_converter.cr b/src/classes/paragraph_converter.cr
index 0596aff..6070cf6 100644
--- a/src/classes/paragraph_converter.cr
+++ b/src/classes/paragraph_converter.cr
@@ -20,11 +20,7 @@ class ParagraphConverter
         node = Heading3.new(children: children)
       when PostResponse::ParagraphType::IFRAME
         paragraph = paragraphs.shift
-        if iframe = paragraph.iframe
-          node = IFrame.new(href: iframe.mediaResource.href)
-        else
-          node = Empty.new
-        end
+        node = EmbeddedConverter.convert(paragraph)
       when PostResponse::ParagraphType::IMG
         paragraph = paragraphs.shift
         node = convert_img(paragraph)
diff --git a/src/clients/medium_client.cr b/src/clients/medium_client.cr
index 60fe41a..1898497 100644
--- a/src/clients/medium_client.cr
+++ b/src/clients/medium_client.cr
@@ -43,6 +43,9 @@ class MediumClient
                 iframe {
                   mediaResource {
                     href
+                    iframeSrc
+                    iframeWidth
+                    iframeHeight
                   }
                 }
                 metadata {
diff --git a/src/components/page_content.cr b/src/components/page_content.cr
index 248e544..980b424 100644
--- a/src/components/page_content.cr
+++ b/src/components/page_content.cr
@@ -29,6 +29,26 @@ class PageContent < BaseComponent
     raw "<!-- a Container was rendered -->"
   end
 
+  def render_child(child : EmbeddedContent)
+    div class: "iframe-wrapper" do
+      iframe(
+        src: child.src,
+        width: child.width,
+        height: child.height,
+        frameborder: "0",
+        allowfullscreen: true,
+      )
+    end
+  end
+
+  def render_child(child : EmbeddedLink)
+    div class: "embedded" do
+      a href: child.href do
+        text "Embedded content at #{child.domain}"
+      end
+    end
+  end
+
   def render_child(node : Emphasis)
     em { render_children(node.children) }
   end
@@ -55,6 +75,10 @@ class PageContent < BaseComponent
     end
   end
 
+  def render_child(child : GithubGist)
+    script src: child.src
+  end
+
   def render_child(node : Heading2)
     h2 { render_children(node.children) }
   end
@@ -63,14 +87,6 @@ class PageContent < BaseComponent
     h3 { render_children(node.children) }
   end
 
-  def render_child(child : IFrame)
-    div class: "embedded" do
-      a href: child.href do
-        text "Embedded content at #{child.domain}"
-      end
-    end
-  end
-
   def render_child(child : Image)
     img src: child.src, width: child.width
   end
diff --git a/src/models/nodes.cr b/src/models/nodes.cr
index 3c141d8..4721e33 100644
--- a/src/models/nodes.cr
+++ b/src/models/nodes.cr
@@ -1,5 +1,6 @@
 module Nodes
-  alias Leaf = Text | Image | IFrame
+  alias Embedded = EmbeddedLink | EmbeddedContent | GithubGist
+  alias Leaf = Text | Image | Embedded
   alias Child = Container | Leaf | Empty
   alias Children = Array(Child)
 
@@ -120,7 +121,40 @@ module Nodes
     end
   end
 
-  class IFrame
+  class EmbeddedContent
+    MAX_WIDTH = 800
+
+    getter src : String
+
+    def initialize(@src : String, @originalWidth : Int32, @originalHeight : Int32)
+    end
+
+    def width
+      [@originalWidth, MAX_WIDTH].min.to_s
+    end
+
+    def height
+      if @originalWidth > MAX_WIDTH
+        (@originalHeight * ratio).round.to_i.to_s
+      else
+        @originalHeight.to_s
+      end
+    end
+
+    private def ratio
+      MAX_WIDTH / @originalWidth
+    end
+
+    def ==(other : EmbeddedContent)
+      other.src == src && other.width == width && other.height == height
+    end
+
+    def empty?
+      false
+    end
+  end
+
+  class EmbeddedLink
     getter href : String
 
     def initialize(@href : String)
@@ -130,7 +164,7 @@ module Nodes
       URI.parse(href).host
     end
 
-    def ==(other : IFrame)
+    def ==(other : EmbeddedLink)
       other.href == href
     end
 
@@ -171,4 +205,21 @@ module Nodes
       false
     end
   end
+
+  class GithubGist
+    def initialize(@href : String)
+    end
+
+    def src
+      "#{@href}.js"
+    end
+
+    def ==(other : GithubGist)
+      other.src == src
+    end
+
+    def empty?
+      false
+    end
+  end
 end
diff --git a/src/models/post_response.cr b/src/models/post_response.cr
index d1411de..28c6768 100644
--- a/src/models/post_response.cr
+++ b/src/models/post_response.cr
@@ -82,6 +82,9 @@ class PostResponse
 
   class MediaResource < Base
     property href : String
+    property iframeSrc : String
+    property iframeWidth : Int32
+    property iframeHeight : Int32
   end
 
   class Metadata < Base
diff --git a/src/shards.cr b/src/shards.cr
index ac3bf5c..30fb81f 100644
--- a/src/shards.cr
+++ b/src/shards.cr
@@ -7,3 +7,4 @@ require "avram"
 require "lucky"
 require "carbon"
 require "authentic"
+require "monads"