diff --git a/packages/optimizer/README.md b/packages/optimizer/README.md
index 62778db9d..d497eafdd 100644
--- a/packages/optimizer/README.md
+++ b/packages/optimizer/README.md
@@ -149,6 +149,7 @@ Available options are:
 - [optimizeAmpBind](#optimizeampbind)
 - [optimizeHeroImages](#optimizeheroimages)
 - [preloadHeroImage](#preloadheroimage)
+- [preloadEnabled](#preloadenabled)
 - [separateKeyframes](#separateKeyframes)
 - [verbose](#verbose)
 
@@ -333,7 +334,11 @@ Hero images are optimized by server-side rendering the `img` element inside the
 
 #### `preloadHeroImage`
 
-Deprecated, use [optimizeHeroImages](#optimizeheroimages) instead. 
+Deprecated, use [optimizeHeroImages](#optimizeheroimages) instead.
+
+#### `preloadEnabled`
+
+Whether the AMP runtime script (v0.js or v0.mjs) and style (v0.css, if applicable) should be preloaded.
 
 #### `separateKeyframes`
 
diff --git a/packages/optimizer/lib/DomTransformer.js b/packages/optimizer/lib/DomTransformer.js
index f9bad08aa..9d8faa8c0 100644
--- a/packages/optimizer/lib/DomTransformer.js
+++ b/packages/optimizer/lib/DomTransformer.js
@@ -129,6 +129,7 @@ const CONFIG_DEFAULT = {
   minify: true,
   optimizeAmpBind: true,
   optimizeHeroImages: true,
+  preloadEnabled: false,
   separateKeyframes: true,
 };
 
@@ -140,6 +141,7 @@ const CONFIG_BUILD = Object.assign({}, CONFIG_DEFAULT, {
   minify: true,
   optimizeAmpBind: true,
   optimizeHeroImages: true,
+  preloadEnabled: false,
   separateKeyframes: true,
 });
 
@@ -151,6 +153,7 @@ const CONFIG_RUNTIME = Object.assign({}, CONFIG_DEFAULT, {
   minify: false,
   optimizeAmpBind: true,
   optimizeHeroImages: true,
+  preloadEnabled: false,
   separateKeyframes: false,
 });
 
diff --git a/packages/optimizer/lib/transformers/RewriteAmpUrls.js b/packages/optimizer/lib/transformers/RewriteAmpUrls.js
index 68559e6e1..4b866cbd3 100644
--- a/packages/optimizer/lib/transformers/RewriteAmpUrls.js
+++ b/packages/optimizer/lib/transformers/RewriteAmpUrls.js
@@ -60,6 +60,7 @@ const {calculateHost} = require('../RuntimeHostHelper');
 class RewriteAmpUrls {
   constructor(config) {
     this.esmModulesEnabled = config.esmModulesEnabled !== false;
+    this.preloadEnabled = config.preloadEnabled !== false;
     this.log = config.log;
   }
   transform(root, params) {
@@ -78,18 +79,23 @@ class RewriteAmpUrls {
     while (node) {
       if (node.tagName === 'script' && this._usesAmpCacheUrl(node.attribs.src)) {
         node.attribs.src = this._replaceUrl(node.attribs.src, host);
-        if (esm) {
-          preloads.push(this._addEsm(node));
-        } else {
-          preloads.push(this._createPreload(node.attribs.src, 'script'));
-        }
+          if ( esm ) {
+            const preload = this._addEsm(node);
+            if (this.preloadEnabled && preload) {
+              preloads.push(preload);
+            }
+          } else if (this.preloadEnabled) {
+            preloads.push(this._createPreload(node.attribs.src, 'script'));
+          }
       } else if (
         node.tagName === 'link' &&
         node.attribs.rel === 'stylesheet' &&
         this._usesAmpCacheUrl(node.attribs.href)
       ) {
         node.attribs.href = this._replaceUrl(node.attribs.href, host);
-        preloads.push(this._createPreload(node.attribs.href, 'style'));
+        if (this.preloadEnabled) {
+          preloads.push(this._createPreload(node.attribs.href, 'style'));
+        }
       } else if (
         node.tagName === 'link' &&
         node.attribs.rel === 'preload' &&
@@ -140,7 +146,7 @@ class RewriteAmpUrls {
   _addEsm(scriptNode) {
     let result = null;
     const esmScriptUrl = scriptNode.attribs.src.replace(/\.js$/, '.mjs');
-    if (this._shouldPreload(scriptNode.attribs.src)) {
+    if (this.preloadEnabled && this._shouldPreload(scriptNode.attribs.src)) {
       const preload = createElement('link', {
         as: 'script',
         crossorigin: 'anonymous',
diff --git a/packages/optimizer/spec/end-to-end/body-only/expected_output.full.html b/packages/optimizer/spec/end-to-end/body-only/expected_output.full.html
index 04812ddc5..f8c4ca745 100644
--- a/packages/optimizer/spec/end-to-end/body-only/expected_output.full.html
+++ b/packages/optimizer/spec/end-to-end/body-only/expected_output.full.html
@@ -2,8 +2,7 @@
 <html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta data-auto charset="utf-8">
-  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
+  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
   <link data-auto rel="canonical" href=".">
 </head>
 <body>
diff --git a/packages/optimizer/spec/end-to-end/body-only/expected_output.lts.html b/packages/optimizer/spec/end-to-end/body-only/expected_output.lts.html
index 80b96b4e5..07eda944f 100644
--- a/packages/optimizer/spec/end-to-end/body-only/expected_output.lts.html
+++ b/packages/optimizer/spec/end-to-end/body-only/expected_output.lts.html
@@ -2,8 +2,7 @@
 <html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta data-auto charset="utf-8">
-  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/lts/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
+  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
   <link data-auto rel="canonical" href=".">
 </head>
 <body>
diff --git a/packages/optimizer/spec/end-to-end/hello-world/expected_output.full.html b/packages/optimizer/spec/end-to-end/hello-world/expected_output.full.html
index d06e2fffd..b07bd37e1 100644
--- a/packages/optimizer/spec/end-to-end/hello-world/expected_output.full.html
+++ b/packages/optimizer/spec/end-to-end/hello-world/expected_output.full.html
@@ -2,9 +2,8 @@
 <html ⚡ i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width,minimum-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
-  <link rel="canonical" href="self.html"><style amp-custom>h1{margin:16px}</style>
+  <meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
+  <link rel="canonical" href="self.html"><style amp-custom>h1 { margin: 16px; }</style>
 </head>
 <body>
   <h1>Hello, AMP world!</h1>
diff --git a/packages/optimizer/spec/end-to-end/hello-world/expected_output.lts.html b/packages/optimizer/spec/end-to-end/hello-world/expected_output.lts.html
index d5373b820..6760b8696 100644
--- a/packages/optimizer/spec/end-to-end/hello-world/expected_output.lts.html
+++ b/packages/optimizer/spec/end-to-end/hello-world/expected_output.lts.html
@@ -2,9 +2,8 @@
 <html ⚡ i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width,minimum-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/lts/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
-  <link rel="canonical" href="self.html"><style amp-custom>h1{margin:16px}</style>
+  <meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
+  <link rel="canonical" href="self.html"><style amp-custom>h1 { margin: 16px; }</style>
 </head>
 <body>
   <h1>Hello, AMP world!</h1>
diff --git a/packages/optimizer/spec/end-to-end/hello-world/expected_output.paired.html b/packages/optimizer/spec/end-to-end/hello-world/expected_output.paired.html
index dce606d40..102c1fc44 100644
--- a/packages/optimizer/spec/end-to-end/hello-world/expected_output.paired.html
+++ b/packages/optimizer/spec/end-to-end/hello-world/expected_output.paired.html
@@ -3,7 +3,6 @@
 <head>
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width,minimum-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://example.com/amp/rtv/123456789000000/v0.mjs" rel="modulepreload">
   <meta name="runtime-host" content="https://example.com">
   <meta name="amp-geo-api" content="/geo"><style amp-runtime i-amphtml-version="123456789000000">/* example.com v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://example.com/amp/rtv/123456789000000/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://example.com/amp/rtv/123456789000000/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://example.com/amp/rtv/123456789000000/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://example.com/amp/rtv/123456789000000/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
   <link rel="canonical" href="self.html"><style amp-custom>h1{margin:16px}</style>
diff --git a/packages/optimizer/spec/end-to-end/markdown/expected_output.full.html b/packages/optimizer/spec/end-to-end/markdown/expected_output.full.html
index 9eca8e11e..8aaab8aa3 100644
--- a/packages/optimizer/spec/end-to-end/markdown/expected_output.full.html
+++ b/packages/optimizer/spec/end-to-end/markdown/expected_output.full.html
@@ -2,8 +2,7 @@
 <html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta data-auto charset="utf-8">
-  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script>
+  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script>
   <link data-auto rel="canonical" href=".">
 </head>
 <body>
diff --git a/packages/optimizer/spec/end-to-end/markdown/expected_output.lts.html b/packages/optimizer/spec/end-to-end/markdown/expected_output.lts.html
index 1dfbfc8d4..8a1b8ced6 100644
--- a/packages/optimizer/spec/end-to-end/markdown/expected_output.lts.html
+++ b/packages/optimizer/spec/end-to-end/markdown/expected_output.lts.html
@@ -2,8 +2,7 @@
 <html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta data-auto charset="utf-8">
-  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/lts/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script>
+  <meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script>
   <link data-auto rel="canonical" href=".">
 </head>
 <body>
diff --git a/packages/optimizer/spec/end-to-end/story/expected_output.full.html b/packages/optimizer/spec/end-to-end/story/expected_output.full.html
index 5d2938b72..ac4f4da3e 100644
--- a/packages/optimizer/spec/end-to-end/story/expected_output.full.html
+++ b/packages/optimizer/spec/end-to-end/story/expected_output.full.html
@@ -2,8 +2,7 @@
 <html amp lang="en" i-amphtml-layout transformed="self;v=1">
 <head>
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diff --git a/packages/optimizer/spec/end-to-end/story/expected_output.lts.html b/packages/optimizer/spec/end-to-end/story/expected_output.lts.html
index 5ddef75c6..cdb69e999 100644
--- a/packages/optimizer/spec/end-to-end/story/expected_output.lts.html
+++ b/packages/optimizer/spec/end-to-end/story/expected_output.lts.html
@@ -2,8 +2,7 @@
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 <head>
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-  <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
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+  <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-story" src="https://cdn.ampproject.org/lts/v0/amp-story-1.0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-story-1.0.js" crossorigin="anonymous" custom-element="amp-story"></script><style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
   <title>My Story</title>
   <link rel="canonical" href="helloworld.html"><style amp-custom>body {
         font-family: 'Roboto', sans-serif;
diff --git a/packages/optimizer/spec/end-to-end/story/expected_output.paired.html b/packages/optimizer/spec/end-to-end/story/expected_output.paired.html
index b7d3e650a..7c7ede64f 100644
--- a/packages/optimizer/spec/end-to-end/story/expected_output.paired.html
+++ b/packages/optimizer/spec/end-to-end/story/expected_output.paired.html
@@ -2,8 +2,7 @@
 <html lang="en" i-amphtml-layout transformed="self;v=1">
 <head>
   <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-story" src="https://cdn.ampproject.org/v0/amp-story-1.0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-story-1.0.js" crossorigin="anonymous" custom-element="amp-story"></script><style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
+  <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-story" src="https://cdn.ampproject.org/v0/amp-story-1.0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-story-1.0.js" crossorigin="anonymous" custom-element="amp-story"></script><style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
   <title>My Story</title>
   <link rel="canonical" href="helloworld.html"><style amp-custom>body {
         font-family: 'Roboto', sans-serif;
diff --git a/packages/optimizer/spec/end-to-end/trailing-template/expected_output.full.html b/packages/optimizer/spec/end-to-end/trailing-template/expected_output.full.html
index b5b59304b..8e2e34893 100644
--- a/packages/optimizer/spec/end-to-end/trailing-template/expected_output.full.html
+++ b/packages/optimizer/spec/end-to-end/trailing-template/expected_output.full.html
@@ -2,8 +2,7 @@
 <html ⚡ i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width,minimum-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-template="amp-mustache" src="https://cdn.ampproject.org/v0/amp-mustache-0.2.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-mustache-0.2.js" crossorigin="anonymous" custom-template="amp-mustache"></script>
+  <meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-template="amp-mustache" src="https://cdn.ampproject.org/v0/amp-mustache-0.2.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-mustache-0.2.js" crossorigin="anonymous" custom-template="amp-mustache"></script>
   <link rel="canonical" href="self.html">
 </head>
 <body>
diff --git a/packages/optimizer/spec/end-to-end/trailing-template/expected_output.lts.html b/packages/optimizer/spec/end-to-end/trailing-template/expected_output.lts.html
index 1d4ec459f..127b45bd3 100644
--- a/packages/optimizer/spec/end-to-end/trailing-template/expected_output.lts.html
+++ b/packages/optimizer/spec/end-to-end/trailing-template/expected_output.lts.html
@@ -2,8 +2,7 @@
 <html ⚡ i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width,minimum-scale=1">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/lts/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async custom-template="amp-mustache" src="https://cdn.ampproject.org/lts/v0/amp-mustache-0.2.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-mustache-0.2.js" crossorigin="anonymous" custom-template="amp-mustache"></script>
+  <meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async custom-template="amp-mustache" src="https://cdn.ampproject.org/lts/v0/amp-mustache-0.2.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-mustache-0.2.js" crossorigin="anonymous" custom-template="amp-mustache"></script>
   <link rel="canonical" href="self.html">
 </head>
 <body>
diff --git a/packages/optimizer/spec/end-to-end/trailing-template/expected_output.paired.html b/packages/optimizer/spec/end-to-end/trailing-template/expected_output.paired.html
index d047faa11..0dd121109 100644
--- a/packages/optimizer/spec/end-to-end/trailing-template/expected_output.paired.html
+++ b/packages/optimizer/spec/end-to-end/trailing-template/expected_output.paired.html
@@ -2,8 +2,7 @@
 <html i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
 <head>
   <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width,minimum-scale=1">
-  <link as="script" crossorigin="anonymous" href="/amp/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="/amp/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="/amp/v0.js" crossorigin="anonymous"></script><script async custom-template="amp-mustache" src="/amp/v0/amp-mustache-0.2.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="/amp/v0/amp-mustache-0.2.js" crossorigin="anonymous" custom-template="amp-mustache"></script>
+  <meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="/amp/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="/amp/v0.js" crossorigin="anonymous"></script><script async custom-template="amp-mustache" src="/amp/v0/amp-mustache-0.2.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="/amp/v0/amp-mustache-0.2.js" crossorigin="anonymous" custom-template="amp-mustache"></script>
   <link rel="canonical" href="self.html">
   <link rel="amphtml" href="https://example.com/amp-version.html">
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diff --git a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_geoapi/expected_output.html b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_geoapi/expected_output.html
index 0eab7d9d0..74b368b14 100644
--- a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_geoapi/expected_output.html
+++ b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_geoapi/expected_output.html
@@ -6,8 +6,6 @@
   <link rel="stylesheet" href="https://cdn.ampproject.org/v0.css">
   <link href="https://fonts.googleapis.com/css?foobar" rel="stylesheet" type="text/css">
   <link href="https://example.com/favicon.ico" rel="icon">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload">
-  <link rel="preload" href="https://cdn.ampproject.org/v0.css" as="style">
 </head>
 <body></body>
 </html>
\ No newline at end of file
diff --git a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_runtime_version/expected_output.html b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_runtime_version/expected_output.html
index efffeb726..f7b94acbb 100644
--- a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_runtime_version/expected_output.html
+++ b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/adds_runtime_version/expected_output.html
@@ -6,8 +6,6 @@
   <link rel="stylesheet" href="https://cdn.ampproject.org/rtv/001515617716922/v0.css">
   <link href="https://fonts.googleapis.com/css?foobar" rel="stylesheet" type="text/css">
   <link href="https://example.com/favicon.ico" rel="icon">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/rtv/001515617716922/v0.mjs" rel="modulepreload">
-  <link rel="preload" href="https://cdn.ampproject.org/rtv/001515617716922/v0.css" as="style">
 </head>
 <body></body>
 </html>
\ No newline at end of file
diff --git a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_host_and_adds_version/expected_output.html b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_host_and_adds_version/expected_output.html
index 2a0eb8a27..711e7dfd3 100644
--- a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_host_and_adds_version/expected_output.html
+++ b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_host_and_adds_version/expected_output.html
@@ -6,8 +6,6 @@
   <link rel="stylesheet" href="/amp/rtv/001515617716922/v0.css">
   <link href="https://fonts.googleapis.com/css?foobar" rel="stylesheet" type="text/css">
   <link href="https://example.com/favicon.ico" rel="icon">
-  <link as="script" crossorigin="anonymous" href="/amp/rtv/001515617716922/v0.mjs" rel="modulepreload">
-  <link rel="preload" href="/amp/rtv/001515617716922/v0.css" as="style">
 </head>
 <body></body>
 </html>
\ No newline at end of file
diff --git a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_hosts/expected_output.html b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_hosts/expected_output.html
index 29709b7ae..6247eabce 100644
--- a/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_hosts/expected_output.html
+++ b/packages/optimizer/spec/transformers/experimental/RewriteAmpUrls/rewrites_hosts/expected_output.html
@@ -7,8 +7,6 @@
 
   <link href="https://fonts.googleapis.com/css?foobar" rel="stylesheet" type="text/css">
   <link href="https://example.com/favicon.ico" rel="icon">
-  <link as="script" crossorigin="anonymous" href="/amp/v0.mjs" rel="modulepreload">
-  <link rel="preload" href="/amp/v0.css" as="style">
 </head>
 <body></body>
 </html>
\ No newline at end of file
diff --git a/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_esm/expected_output.html b/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_esm/expected_output.html
index 7d262c29c..0750c4e4c 100644
--- a/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_esm/expected_output.html
+++ b/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_esm/expected_output.html
@@ -7,8 +7,6 @@
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   <link href="https://fonts.googleapis.com/css?foobar" rel="stylesheet" type="text/css">
   <link href="https://example.com/favicon.ico" rel="icon">
-  <link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload">
-  <link rel="preload" href="https://cdn.ampproject.org/v0.css" as="style">
 </head>
 <body></body>
 </html>
\ No newline at end of file
diff --git a/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_lts/expected_output.html b/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_lts/expected_output.html
index aa570f4cf..c03ff4569 100644
--- a/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_lts/expected_output.html
+++ b/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_lts/expected_output.html
@@ -6,8 +6,6 @@
   <link rel="stylesheet" href="https://cdn.ampproject.org/lts/v0.css">
   <link href="https://fonts.googleapis.com/css?foobar" rel="stylesheet" type="text/css">
   <link href="https://example.com/favicon.ico" rel="icon">
-  <link rel="preload" href="https://cdn.ampproject.org/lts/v0.js" as="script">
-  <link rel="preload" href="https://cdn.ampproject.org/lts/v0.css" as="style">
 </head>
 <body></body>
 </html>
\ No newline at end of file
diff --git a/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_preloads/input.html b/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_preloads/input.html
index f3ab7ec0d..b38d57f03 100644
--- a/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_preloads/input.html
+++ b/packages/optimizer/spec/transformers/valid/RewriteAmpUrls/adds_preloads/input.html
@@ -1,3 +1,8 @@
+<!--
+{
+  "preloadEnabled": true
+}
+-->
 <!doctype html>
 <html ⚡>
 <head>