diff --git a/web/js/codeworld.js b/web/js/codeworld.js
index b5dbdbef..94bbf028 100644
--- a/web/js/codeworld.js
+++ b/web/js/codeworld.js
@@ -30,7 +30,9 @@ import {
   run,
   toggleObsoleteCodeAlert,
   warnIfUnsaved,
-  sha256digest,
+  saveCodeToLocalStorageAndReplaceHash,
+  tryLoadingCodeFromLocalStorage,
+  tryFetchCodeFromSourceAndStripURL,
 } from './codeworld_shared.js';
 
 import * as Alert from './utils/alert.js';
@@ -178,7 +180,7 @@ async function init() {
   if(window.buildMode === 'codeworld')
     document.querySelector("#docButton").style.display = "none";
 
-  const savedCode = localStorage.getItem(`${window.buildMode}-${window.location.hash.slice(1)}`);
+  const savedCode = tryLoadingCodeFromLocalStorage(window.buildMode);
 
   if (savedCode) {
     setCode(savedCode);
@@ -192,48 +194,15 @@ picture = ...
 `);
   }
 
-  const currentUrl = new URL(window.location);
-  const searchParams = currentUrl.searchParams;
-  const codeSrc = searchParams.get("loadSrc");
-  if(codeSrc) {
-    const fetchController = new AbortController();
-    sweetAlert({
-      title: Alert.title('Loading code'),
-      text: 'The code is being fetched.  Please wait...',
-      onOpen: () => {
-        sweetAlert.showLoading();
-        sweetAlert.getCancelButton().disabled = false;
-      },
-      showConfirmButton: false,
-      showCancelButton: true,
-      showCloseButton: false,
-      allowOutsideClick: false,
-      allowEscapeKey: false,
-      allowEnterKey: false,
-    }).then(() => {
-      fetchController.abort();
-    });
-    try {
-      const response = await fetch(codeSrc, {
-        signal: fetchController.signal,
-      });
-      const code = await response.text();
-      setCode(code);
-      sweetAlert.close();
-      searchParams.delete("loadSrc");
-      window.history.replaceState(window.history.state, "", currentUrl.toString());
-    } catch (error) {
-      sweetAlert(
-        'Oops!',
-        'Could not load the code from source. Please try again.',
-        'error'
-      );
-    }
-  }
+  await tryFetchCodeFromSourceAndStripURL(async (code) => {
+    setCode(code);
+    await saveCodeToLocalStorageAndReplaceHash(code, window.buildMode);
+  });
 
   if(window.preloadCode && window.buildMode === 'haskell'){
     const codeToLoad = new DOMParser().parseFromString(window.preloadCode, 'text/html').documentElement.textContent;
     setCode(codeToLoad);
+    await saveCodeToLocalStorageAndReplaceHash(codeToLoad, window.buildMode);
   };
 }
 
@@ -959,7 +928,7 @@ function stopRun() {
   }
   window.cancelCompile();
 
-  run('', '', '', false, null);
+  run(false, '', false, null);
 }
 
 function compile() {
@@ -1020,14 +989,10 @@ function compile() {
         compilerMessage = 'Sorry!  Your program couldn\'t be run right now.';
       }
 
-      const codeHash = await sha256digest(src.trim());
-
       window.program = compiledProgram;
-      run(codeHash,"deploy_hash",compilerMessage,false,compileGeneration);
-      localStorage.setItem(`${window.buildMode}-${codeHash}`, src);
-
-
+      run(status === 200,compilerMessage,false,compileGeneration);
       sweetAlert.close();
+      await saveCodeToLocalStorageAndReplaceHash(src, window.buildMode);
       return;
     }
 
diff --git a/web/js/codeworld_shared.js b/web/js/codeworld_shared.js
index b1451df8..10a70075 100644
--- a/web/js/codeworld_shared.js
+++ b/web/js/codeworld_shared.js
@@ -949,7 +949,7 @@ function initializeLayoutContainer(options) {
 }
 
 
-function run(hash, dhash, msg, error, generation) {
+function run(successful, msg, error, generation) {
   window.runningGeneration = generation;
   window.debugAvailable = false;
   window.debugActive = false;
@@ -965,17 +965,13 @@ function run(hash, dhash, msg, error, generation) {
     '*'
   );
 
-  if (hash) {
-    window.location.hash = `#${hash}`;
-  }
-
   runner.contentWindow.location.replace(`run?mode=${window.buildMode}`);
   document.getElementById('runner').style.display = 'none';
   document.getElementById('startRecButton').style.display = 'none';
 
   const layoutHandler = $(LAYOUT_CONTAINER_CLASSNAME).layout();
 
-  if (hash || msg) {
+  if (successful || msg) {
     layoutHandler.show('east');
     layoutHandler.open('east');
   } else {
@@ -1097,6 +1093,80 @@ async function sha256digest(data) {
   });
 }
 
+async function saveCodeToLocalStorageAndReplaceHash(code, mode) {
+  const currentUrl = new URL(window.location);
+
+  try {
+    const codeHash = await sha256digest(code.trim());
+    localStorage.setItem(`${mode}-${codeHash}`, code);
+    currentUrl.hash = codeHash;
+
+    window.history.replaceState(window.history.state, "", currentUrl.toString());
+  } catch (error) {
+    console.error('Failed to save code to local storage:', error);
+    sweetAlert(
+        'Oops!',
+        'Unable to store code in local storage. Quota might have been exceeded.',
+        'error'
+      );
+  }
+}
+
+function tryLoadingCodeFromLocalStorage(mode) {
+  const currentUrl = new URL(window.location);
+  const codeHash = currentUrl.hash.slice(1);
+  if(!codeHash) return;
+
+  return localStorage.getItem(`${mode}-${codeHash}`);
+}
+
+async function tryFetchCodeFromSourceAndStripURL(handler){
+  const currentUrl = new URL(window.location);
+  const searchParams = currentUrl.searchParams;
+
+  const codeSrc = searchParams.get("loadSrc");
+  if (!codeSrc) return;
+
+  const fetchController = new AbortController();
+    sweetAlert({
+      title: Alert.title('Loading code'),
+      text: 'The code is being fetched.  Please wait...',
+      onOpen: () => {
+        sweetAlert.showLoading();
+        sweetAlert.getCancelButton().disabled = false;
+      },
+      showConfirmButton: false,
+      showCancelButton: true,
+      showCloseButton: false,
+      allowOutsideClick: false,
+      allowEscapeKey: false,
+      allowEnterKey: false,
+    }).then(() => {
+      fetchController.abort();
+    });
+    try {
+      const response = await fetch(codeSrc, {
+        signal: fetchController.signal,
+      });
+      if(response.ok) {
+        const code = await response.text();
+        searchParams.delete("loadSrc");
+        window.history.replaceState(window.history.state, "", currentUrl.toString());
+        sweetAlert.close();
+        await handler(code);
+      } else {
+        throw new Error(`Failed to fetch code from source: ${response.statusText}`);
+      }
+
+    } catch (error) {
+      sweetAlert(
+        'Oops!',
+        'Could not load the code from source. Please try again.',
+        'error'
+      );
+    }
+}
+
 export {
   clearMessages,
   definePanelExtension,
@@ -1114,4 +1184,7 @@ export {
   toggleObsoleteCodeAlert,
   warnIfUnsaved,
   sha256digest,
+  saveCodeToLocalStorageAndReplaceHash,
+  tryLoadingCodeFromLocalStorage,
+  tryFetchCodeFromSourceAndStripURL,
 };
diff --git a/web/js/run.js b/web/js/run.js
index 6fe7da80..a1390375 100644
--- a/web/js/run.js
+++ b/web/js/run.js
@@ -15,6 +15,12 @@
  */
 
 import { sendHttp } from './utils/network.js';
+import { 
+  saveCodeToLocalStorageAndReplaceHash, 
+  tryLoadingCodeFromLocalStorage,
+  tryFetchCodeFromSourceAndStripURL, 
+} from './codeworld_shared.js'
+import * as Alert from './utils/alert.js';
 
 // Tracks when the program started, and whether the program has done
 // anything observable (as best we can tell).  This is used to decide
@@ -233,41 +239,35 @@ function start() {
 }
 
 async function init() {
-  let paramList = location.search.slice(1).split('&');
-  const params = {};
-  for (let i = 0; i < paramList.length; i++) {
-    const name = decodeURIComponent(paramList[i].split('=')[0]);
-    const value = decodeURIComponent(paramList[i].slice(name.length + 1));
-    params[name] = value;
-  }
-  // params from the hash
-  paramList = location.hash.slice(1).split('&');
-  for (let i = 0; i < paramList.length; i++) {
-    const name = decodeURIComponent(paramList[i].split('=')[0]);
-    const value = decodeURIComponent(paramList[i].slice(name.length + 1));
-    params[name] = value;
-  }
+  await Alert.init();
+  const searchParams = new URLSearchParams(window.location.search);
 
-  let mode = params['mode'];
+  let mode = searchParams.get('mode');
   if(!mode) mode = 'codeworld';
+  
+  const savedCode = tryLoadingCodeFromLocalStorage(mode);
+  if(savedCode) {
+    window.preloadCode = savedCode;
+  }
 
-  const codeSrc = params['loadSrc'];
-
-  if(codeSrc || window.preloadCode) {
+  if(searchParams.has('loadSrc') || window.preloadCode) {
     try {
       let code = window.preloadCode;
       if(!code) {
-        const response = await fetch(codeSrc);
-        code = await response.text();
-        if(!response.ok) {
-          throw new Error("Could not load source code from external location. Response code not OK.");
-        }
-      }
+        await tryFetchCodeFromSourceAndStripURL((fetchedCode) => {
+          code = fetchedCode;
+        });
+      }    
+
+      if(code.trim() === '')return;
+
+      await saveCodeToLocalStorageAndReplaceHash(code, mode);
+
       const data = new FormData();
       data.append('source', code);
       data.append('mode', mode);
 
-      const enablePreview = params['enablePreview'];
+      const enablePreview = searchParams.get('enablePreview');
 
       if(enablePreview) data.append('enablePreview',enablePreview);
       
diff --git a/web/run.html b/web/run.html
index 98e32db1..ffcdccc3 100644
--- a/web/run.html
+++ b/web/run.html
@@ -5,10 +5,25 @@
     <script>
       window.preloadCode = `/*CODE_TO_BE_LOADED_BY_DEFAULT*/`;
     </script>
+    <link rel="stylesheet" href="css/theme-variables.css" />
+    <link rel="stylesheet" href="css/codeworld.css" />
+    <link
+      rel="stylesheet"
+      href="mirrored/cdn.materialdesignicons.com/3.6.95/css/materialdesignicons.min.css"
+    />
+    <link
+      rel="stylesheet"
+      href="mirrored/ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/smoothness/jquery-ui.css"
+    />
   </head>
 
   <body></body>
 
   <script type="module" src="js/run.js"></script>
   <script type="text/javascript" src="js/debugmode.js"></script>
+  <script
+      src="mirrored/code.jquery.com/jquery-1.12.4.min.js"
+      integrity="sha256-ZosEbRLbNQzLpnKIkEdrPv7lOy9C27hHQ+Xp8a4MxAQ="
+      crossorigin="anonymous"
+    ></script>
 </html>