diff --git a/src/components/library-item/library-item.jsx b/src/components/library-item/library-item.jsx
index 81eac4801c2..babef3a8a7a 100644
--- a/src/components/library-item/library-item.jsx
+++ b/src/components/library-item/library-item.jsx
@@ -39,6 +39,7 @@ class LibraryItemComponent extends React.PureComponent {
                     <img
                         className={styles.featuredImage}
                         src={this.props.iconURL}
+                        loading="lazy"
                     />
                 </div>
                 {this.props.insetIconURL ? (
@@ -130,6 +131,7 @@ class LibraryItemComponent extends React.PureComponent {
                         <img
                             className={styles.libraryItemImage}
                             src={this.props.iconURL}
+                            loading="lazy"
                         />
                     </Box>
                 </Box>
diff --git a/src/lib/libraries/decks/index.jsx b/src/lib/libraries/decks/index.jsx
index b9c48850887..e0c60c1bddc 100644
--- a/src/lib/libraries/decks/index.jsx
+++ b/src/lib/libraries/decks/index.jsx
@@ -7,7 +7,7 @@ import {FormattedMessage} from 'react-intl';
 import libraryIntro from './thumbnails/getting-started.jpg';
 
 // Getting Started ASL
-import libraryGettingStartedASL from './thumbnails/getting-started-asl.png';
+import libraryGettingStartedASL from './thumbnails/getting-started-asl.jpg';
 
 // Text to Speech
 import libraryTXTSpeech from './thumbnails/text-to-speech.jpg';
diff --git a/src/lib/libraries/decks/thumbnails/add-backdrop.jpg b/src/lib/libraries/decks/thumbnails/add-backdrop.jpg
index f046afb70cc..a53c0ebcfaa 100644
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diff --git a/src/lib/libraries/decks/thumbnails/add-effects.jpg b/src/lib/libraries/decks/thumbnails/add-effects.jpg
index bb773b2ea6d..1759397ae5e 100644
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diff --git a/src/lib/libraries/decks/thumbnails/add-sprite.jpg b/src/lib/libraries/decks/thumbnails/add-sprite.jpg
index e7a13449072..c6e181abe7d 100644
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diff --git a/src/lib/libraries/decks/thumbnails/animate-a-character.jpg b/src/lib/libraries/decks/thumbnails/animate-a-character.jpg
index 1fddfb5c569..65c1bacfdc1 100644
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diff --git a/src/lib/libraries/decks/thumbnails/animate-a-name.jpg b/src/lib/libraries/decks/thumbnails/animate-a-name.jpg
index 391eb8971e8..160169752bf 100644
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diff --git a/src/lib/libraries/decks/thumbnails/animate-sprite.jpg b/src/lib/libraries/decks/thumbnails/animate-sprite.jpg
index b67c47bbb0f..c507da00045 100644
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diff --git a/src/lib/libraries/decks/thumbnails/cartoon-network.jpg b/src/lib/libraries/decks/thumbnails/cartoon-network.jpg
index 9d822e98cc1..dca04884bc1 100644
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diff --git a/src/lib/libraries/decks/thumbnails/change-size.jpg b/src/lib/libraries/decks/thumbnails/change-size.jpg
index e496a7d81fe..74b74c52067 100644
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diff --git a/src/lib/libraries/decks/thumbnails/chase-game.jpg b/src/lib/libraries/decks/thumbnails/chase-game.jpg
index 6e74c212872..5294413f678 100644
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diff --git a/src/lib/libraries/decks/thumbnails/code-a-cartoon.jpg b/src/lib/libraries/decks/thumbnails/code-a-cartoon.jpg
index b043b3f5e33..3dff877e436 100644
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diff --git a/src/lib/libraries/decks/thumbnails/getting-started-asl.jpg b/src/lib/libraries/decks/thumbnails/getting-started-asl.jpg
new file mode 100644
index 00000000000..6351c61215d
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diff --git a/src/lib/libraries/decks/thumbnails/getting-started-asl.png b/src/lib/libraries/decks/thumbnails/getting-started-asl.png
deleted file mode 100644
index c6503e92dcd..00000000000
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diff --git a/src/lib/libraries/decks/thumbnails/getting-started.jpg b/src/lib/libraries/decks/thumbnails/getting-started.jpg
index 553e881d9a3..b8bc3439449 100644
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diff --git a/src/lib/libraries/decks/thumbnails/glide-around.jpg b/src/lib/libraries/decks/thumbnails/glide-around.jpg
index b9e140c452e..c289ba9bc93 100644
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diff --git a/src/lib/libraries/decks/thumbnails/hide-and-show.jpg b/src/lib/libraries/decks/thumbnails/hide-and-show.jpg
index 564d6b958d2..fc43f55302b 100644
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diff --git a/src/lib/libraries/decks/thumbnails/imagine.jpg b/src/lib/libraries/decks/thumbnails/imagine.jpg
index c419d6e872c..c30cd9cf2e1 100644
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diff --git a/src/lib/libraries/decks/thumbnails/make-music.jpg b/src/lib/libraries/decks/thumbnails/make-music.jpg
index a00248320ac..4b8d1a9f519 100644
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diff --git a/src/lib/libraries/decks/thumbnails/move-arrow-keys.jpg b/src/lib/libraries/decks/thumbnails/move-arrow-keys.jpg
index 6524b5d6c74..fe78ef87f68 100644
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diff --git a/src/lib/libraries/decks/thumbnails/pong.jpg b/src/lib/libraries/decks/thumbnails/pong.jpg
index 631aa152110..8b9895a0ae2 100644
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diff --git a/src/lib/libraries/decks/thumbnails/pop-game.jpg b/src/lib/libraries/decks/thumbnails/pop-game.jpg
index dfe78f63778..621360c0af2 100644
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diff --git a/src/lib/libraries/decks/thumbnails/record-a-sound.jpg b/src/lib/libraries/decks/thumbnails/record-a-sound.jpg
index 355ff325b4a..e650be388a7 100644
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diff --git a/src/lib/libraries/decks/thumbnails/spin.jpg b/src/lib/libraries/decks/thumbnails/spin.jpg
index 8c7004f3920..162c6aa6dec 100644
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diff --git a/src/lib/libraries/decks/thumbnails/talking.png b/src/lib/libraries/decks/thumbnails/talking.png
index 51c06c6ef00..100b22f09c4 100644
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diff --git a/src/lib/libraries/decks/thumbnails/tell-a-story.jpg b/src/lib/libraries/decks/thumbnails/tell-a-story.jpg
index 6fc76abcddc..68b9412aff9 100644
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diff --git a/src/lib/libraries/decks/thumbnails/text-to-speech.jpg b/src/lib/libraries/decks/thumbnails/text-to-speech.jpg
index 972f48a4ecb..63138528988 100644
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diff --git a/src/lib/libraries/decks/thumbnails/video-sensing.jpg b/src/lib/libraries/decks/thumbnails/video-sensing.jpg
index b8769065254..f2e108cff0e 100644
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