diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-all-of-our-buttons.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-all-of-our-buttons.md
index 9c9a200e02..218b23064b 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-all-of-our-buttons.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-all-of-our-buttons.md
@@ -75,10 +75,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fas fa-thumbs-up"></i> Like</button>
@@ -137,10 +137,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fas fa-thumbs-up"></i> Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-our-buttons.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-our-buttons.md
index bda1cf6d31..12a425b9c2 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-our-buttons.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/add-font-awesome-icons-to-our-buttons.md
@@ -92,10 +92,10 @@ assert(code.match(/<\/i>|<\/span>/g));
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
@@ -154,10 +154,10 @@ assert(code.match(/<\/i>|<\/span>/g));
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fas fa-thumbs-up"></i> Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/call-out-optional-actions-with-btn-info.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/call-out-optional-actions-with-btn-info.md
index 50f3b1dbd7..68f0121b1e 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/call-out-optional-actions-with-btn-info.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/call-out-optional-actions-with-btn-info.md
@@ -81,9 +81,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-block btn-primary">Like</button>
   <p>Things cats love:</p>
   <ul>
@@ -144,9 +144,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-block btn-primary">Like</button>
   <button class="btn btn-block btn-info">Info</button>
 
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/center-text-with-bootstrap.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/center-text-with-bootstrap.md
index 9aeceadaa1..7b004c5b06 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/center-text-with-bootstrap.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/center-text-with-bootstrap.md
@@ -67,9 +67,9 @@ assert($('h2').hasClass('red-text'));
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <p>Things cats love:</p>
   <ul>
     <li>cat nip</li>
@@ -129,9 +129,9 @@ assert($('h2').hasClass('red-text'));
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <p>Things cats love:</p>
   <ul>
     <li>cat nip</li>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-block-element-bootstrap-button.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-block-element-bootstrap-button.md
index 1573a5fc26..eaae241262 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-block-element-bootstrap-button.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-block-element-bootstrap-button.md
@@ -93,9 +93,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-default">Like</button>
   <p>Things cats love:</p>
   <ul>
@@ -156,9 +156,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-block btn-default">Like</button>
   <p>Things cats love:</p>
   <ul>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-bootstrap-button.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-bootstrap-button.md
index 3014dc6931..a3f7b25758 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-bootstrap-button.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-bootstrap-button.md
@@ -76,9 +76,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
 
   <p>Things cats love:</p>
   <ul>
@@ -143,9 +143,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
 
    <!-- ADD Bootstrap Styled Button -->
   <button class="btn btn-default">Like</button> 
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-custom-heading.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-custom-heading.md
index 646afcbe0f..74fcef38ee 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-custom-heading.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/create-a-custom-heading.md
@@ -75,9 +75,9 @@ assert(
 <div class="container-fluid">
   <h2 class="text-primary text-center">CatPhotoApp</h2>
 
-  <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
@@ -137,10 +137,10 @@ assert(
       <h2 class="text-primary  text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-        <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+        <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/ditch-custom-css-for-bootstrap.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/ditch-custom-css-for-bootstrap.md
index 76a1bffcd7..559fd32d75 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/ditch-custom-css-for-bootstrap.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/ditch-custom-css-for-bootstrap.md
@@ -91,9 +91,9 @@ assert($('.img-responsive').length > 1);
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
@@ -149,9 +149,9 @@ assert($('.img-responsive').length > 1);
 <div class="container-fluid">
   <h2 class="text-primary text-center">CatPhotoApp</h2>
 
-  <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/line-up-form-elements-responsively-with-bootstrap.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/line-up-form-elements-responsively-with-bootstrap.md
index 426dad2cb4..f553498c46 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/line-up-form-elements-responsively-with-bootstrap.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/line-up-form-elements-responsively-with-bootstrap.md
@@ -77,10 +77,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
@@ -154,10 +154,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/make-images-mobile-responsive.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/make-images-mobile-responsive.md
index 54c1ec8e26..eafea380ce 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/make-images-mobile-responsive.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/make-images-mobile-responsive.md
@@ -8,7 +8,7 @@ dashedName: make-images-mobile-responsive
 
 # --description--
 
-First, add a new image below the existing one. Set its `src` attribute to `https://bit.ly/fcc-running-cats`.
+First, add a new image below the existing one. Set its `src` attribute to `https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg`.
 
 It would be great if this image could be exactly the width of our phone's screen.
 
@@ -34,10 +34,10 @@ Your new image should not have the class `smaller-image`.
 assert(!$('img:eq(1)').hasClass('smaller-image'));
 ```
 
-Your new image should have a `src` of `https://bit.ly/fcc-running-cats`.
+Your new image should have a `src` of `https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg`.
 
 ```js
-assert($('img:eq(1)').attr('src') === 'https://bit.ly/fcc-running-cats');
+assert($('img:eq(1)').attr('src') === 'https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg');
 ```
 
 Your new `img` element should have a closing angle bracket.
@@ -87,7 +87,7 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
   <p>Things cats love:</p>
   <ul>
@@ -148,8 +148,8 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive">
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive">
 
   <p>Things cats love:</p>
   <ul>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-checkboxes.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-checkboxes.md
index 33c062bdf5..b51a242592 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-checkboxes.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-checkboxes.md
@@ -68,10 +68,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
@@ -137,10 +137,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-radio-buttons.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-radio-buttons.md
index b2ec1682b3..6d6d33e324 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-radio-buttons.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/responsively-style-radio-buttons.md
@@ -67,10 +67,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
@@ -129,10 +129,10 @@ assert(
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/style-text-inputs-as-form-controls.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/style-text-inputs-as-form-controls.md
index ddbc6ab0ab..70d3ea34cf 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/style-text-inputs-as-form-controls.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/style-text-inputs-as-form-controls.md
@@ -70,10 +70,10 @@ assert(code.match(/<\/i>/g) && code.match(/<\/i/g).length > 3);
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
@@ -147,10 +147,10 @@ assert(code.match(/<\/i>/g) && code.match(/<\/i/g).length > 3);
       <h2 class="text-primary text-center">CatPhotoApp</h2>
     </div>
     <div class="col-xs-4">
-      <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+      <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
     </div>
   </div>
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary"><i class="fa fa-thumbs-up"></i> Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.md
index a3e9e1b9ec..f34a3d7b98 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.md
@@ -75,9 +75,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-default btn-block">Like</button>
   <p>Things cats love:</p>
   <ul>
@@ -138,9 +138,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-primary btn-block">Like</button>
   <p>Things cats love:</p>
   <ul>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-a-span-to-target-inline-elements.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-a-span-to-target-inline-elements.md
index b4e04ccd5b..007e9dc410 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-a-span-to-target-inline-elements.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-a-span-to-target-inline-elements.md
@@ -86,9 +86,9 @@ assert(
 <div class="container-fluid">
   <h2 class="text-primary text-center">CatPhotoApp</h2>
 
-  <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
@@ -146,9 +146,9 @@ assert(
 <div class="container-fluid">
   <h2 class="text-primary text-center">CatPhotoApp</h2>
 
-  <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="img-responsive thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-responsive-design-with-bootstrap-fluid-containers.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-responsive-design-with-bootstrap-fluid-containers.md
index 3e5204468d..82028b0403 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-responsive-design-with-bootstrap-fluid-containers.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-responsive-design-with-bootstrap-fluid-containers.md
@@ -84,7 +84,7 @@ assert($('.container-fluid').children().length >= 8 && !$('.container-fluid').ha
 
 <p>Click here for <a href="#">cat photos</a>.</p>
 
-<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+<a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
 <p>Things cats love:</p>
 <ul>
@@ -143,7 +143,7 @@ assert($('.container-fluid').children().length >= 8 && !$('.container-fluid').ha
 
 <p>Click here for <a href="#">cat photos</a>.</p>
 
-<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+<a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
 <p>Things cats love:</p>
 <ul>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-the-bootstrap-grid-to-put-elements-side-by-side.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-the-bootstrap-grid-to-put-elements-side-by-side.md
index 67a3387379..323e0f2599 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-the-bootstrap-grid-to-put-elements-side-by-side.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/use-the-bootstrap-grid-to-put-elements-side-by-side.md
@@ -91,9 +91,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-block btn-primary">Like</button>
   <button class="btn btn-block btn-info">Info</button>
   <button class="btn btn-block btn-danger">Delete</button>
@@ -156,9 +156,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <div class="row">
     <div class="col-xs-4">
       <button class="btn btn-block btn-primary">Like</button>
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/warn-your-users-of-a-dangerous-action-with-btn-danger.md b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/warn-your-users-of-a-dangerous-action-with-btn-danger.md
index 3102b61875..d64ff4afb7 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/warn-your-users-of-a-dangerous-action-with-btn-danger.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/bootstrap/warn-your-users-of-a-dangerous-action-with-btn-danger.md
@@ -81,9 +81,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-block btn-primary">Like</button>
   <button class="btn btn-block btn-info">Info</button>
   <p>Things cats love:</p>
@@ -145,9 +145,9 @@ assert(
 
   <p>Click here for <a href="#">cat photos</a>.</p>
 
-  <a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
+  <a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
 
-  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
+  <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/running-cats.jpg" class="img-responsive" alt="Three kittens running towards the camera.">
   <button class="btn btn-block btn-primary">Like</button>
   <button class="btn btn-block btn-info">Info</button>
   <button class="btn btn-block btn-danger">Delete</button>