diff --git a/packages/core/test/engine_liquid_tests.js b/packages/core/test/engine_liquid_tests.js
index 728eba75a..7aefb6e03 100644
--- a/packages/core/test/engine_liquid_tests.js
+++ b/packages/core/test/engine_liquid_tests.js
@@ -124,7 +124,7 @@ tap.test(
     );
 
     var expectedValue =
-      '<style>\n  .Media {\n    display: flex;\n    align-items: flex-start;\n  }\n\n  .Media > img {\n    margin-right: 1em;\n    max-width: 200px;\n  }\n\n  .Media-body {\n    flex: 1;\n  }\n</style>\n\n\n\n\n<div class="Media">\n  <img src="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg"\n  srcset="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg 280w,\n          http://placeholdit.imgix.net/~text?txtsize=33&txt=560%C3%97440&w=560&h=440&fm=pjpg 560w,\n          http://placeholdit.imgix.net/~text?txtsize=33&txt=840%C3%97660&w=840&h=660&fm=pjpg 840w"\n  sizes="100vw">\n\n  <style>\n  .btn {\n    padding: 10px;\n    border-radius: 10px;\n    display: inline-block;\n    text-align: center;\n  }\n</style>\n\n<a href="#" class="btn">Button</a>\n\n\n  <div class="Media-body">\n\n    \n    \n\n    <p>Oh, hello world!</p>\n  </div>\n</div>\n';
+      '<style>\n  .Media {\n    display: flex;\n    align-items: flex-start;\n  }\n\n  .Media > img {\n    margin-right: 1em;\n    max-width: 200px;\n  }\n\n  .Media-body {\n    flex: 1;\n  }\n</style>\n\n\n\n\n<div class="Media">\n  <img src="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33"\n  srcset="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33 280w,\n          https://place-hold.it/560x440?text=560%C3%97440&fontsize=33 560w,\n          https://place-hold.it/840x660?text=840%C3%97660&fontsize=33 840w"\n  sizes="100vw">\n\n  <style>\n  .btn {\n    padding: 10px;\n    border-radius: 10px;\n    display: inline-block;\n    text-align: center;\n  }\n</style>\n\n<a href="#" class="btn">Button</a>\n\n\n  <div class="Media-body">\n\n    \n    \n\n    <p>Oh, hello world!</p>\n  </div>\n</div>\n';
 
     // set up environment
     var patternlab = new fakePatternLab(); // environment
diff --git a/packages/core/test/engine_twig_tests.js b/packages/core/test/engine_twig_tests.js
index 73c80e9a0..d631a4020 100644
--- a/packages/core/test/engine_twig_tests.js
+++ b/packages/core/test/engine_twig_tests.js
@@ -124,7 +124,7 @@ tap.test(
     );
 
     var expectedValue =
-      '<style>\n  .Media {\n    display: flex;\n    align-items: flex-start;\n  }\n\n  .Media > img {\n    margin-right: 1em;\n    max-width: 200px;\n  }\n\n  .Media-body {\n    flex: 1;\n  }\n</style>\n\n\n\n\n<div class="Media">\n  <img src="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg"\n  srcset="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg 280w,\n          http://placeholdit.imgix.net/~text?txtsize=33&txt=560%C3%97440&w=560&h=440&fm=pjpg 560w,\n          http://placeholdit.imgix.net/~text?txtsize=33&txt=840%C3%97660&w=840&h=660&fm=pjpg 840w"\n  sizes="100vw">\n\n  <style>\n  .btn {\n    padding: 10px;\n    border-radius: 10px;\n    display: inline-block;\n    text-align: center;\n  }\n</style>\n\n<a href="#" class="btn">Button</a>\n\n\n  <div class="Media-body">\n\n    \n    \n\n    <p>Oh, hello world!</p>\n  </div>\n</div>\n';
+      '<style>\n  .Media {\n    display: flex;\n    align-items: flex-start;\n  }\n\n  .Media > img {\n    margin-right: 1em;\n    max-width: 200px;\n  }\n\n  .Media-body {\n    flex: 1;\n  }\n</style>\n\n\n\n\n<div class="Media">\n  <img src="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33"\n  srcset="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33 280w,\n          https://place-hold.it/560x440?text=560%C3%97440&fontsize=33 560w,\n          https://place-hold.it/840x660?text=840%C3%97660&fontsize=33 840w"\n  sizes="100vw">\n\n  <style>\n  .btn {\n    padding: 10px;\n    border-radius: 10px;\n    display: inline-block;\n    text-align: center;\n  }\n</style>\n\n<a href="#" class="btn">Button</a>\n\n\n  <div class="Media-body">\n\n    \n    \n\n    <p>Oh, hello world!</p>\n  </div>\n</div>\n';
 
     // set up environment
     var patternlab = new fakePatternLab(); // environment
diff --git a/packages/core/test/files/_liquid_test-patterns/atoms/general/image.liquid b/packages/core/test/files/_liquid_test-patterns/atoms/general/image.liquid
index 01c4af9f8..320401c8e 100644
--- a/packages/core/test/files/_liquid_test-patterns/atoms/general/image.liquid
+++ b/packages/core/test/files/_liquid_test-patterns/atoms/general/image.liquid
@@ -1,5 +1,5 @@
-<img src="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg"
-  srcset="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg 280w,
-          http://placeholdit.imgix.net/~text?txtsize=33&txt=560%C3%97440&w=560&h=440&fm=pjpg 560w,
-          http://placeholdit.imgix.net/~text?txtsize=33&txt=840%C3%97660&w=840&h=660&fm=pjpg 840w"
+<img src="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33"
+  srcset="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33 280w,
+          https://place-hold.it/560x440?text=560%C3%97440&fontsize=33 560w,
+          https://place-hold.it/840x660?text=840%C3%97660&fontsize=33 840w"
   sizes="100vw">
diff --git a/packages/core/test/files/_twig-test-patterns/atoms/general/image.twig b/packages/core/test/files/_twig-test-patterns/atoms/general/image.twig
index 01c4af9f8..320401c8e 100644
--- a/packages/core/test/files/_twig-test-patterns/atoms/general/image.twig
+++ b/packages/core/test/files/_twig-test-patterns/atoms/general/image.twig
@@ -1,5 +1,5 @@
-<img src="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg"
-  srcset="http://placeholdit.imgix.net/~text?txtsize=33&txt=280%C3%97220&w=280&h=220&fm=pjpg 280w,
-          http://placeholdit.imgix.net/~text?txtsize=33&txt=560%C3%97440&w=560&h=440&fm=pjpg 560w,
-          http://placeholdit.imgix.net/~text?txtsize=33&txt=840%C3%97660&w=840&h=660&fm=pjpg 840w"
+<img src="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33"
+  srcset="https://place-hold.it/280x220?text=280%C3%97220&fontsize=33 280w,
+          https://place-hold.it/560x440?text=560%C3%97440&fontsize=33 560w,
+          https://place-hold.it/840x660?text=840%C3%97660&fontsize=33 840w"
   sizes="100vw">