diff --git a/html.js b/html.js
index 479125b6e98296863245c3f226ce3edf57af5f8b..b1e2b63f33d290e63ec65e425dbad03c1aa384af 100644
--- a/html.js
+++ b/html.js
@@ -35,10 +35,10 @@ function createHtmlTemplateFunction(source) {
   // biome-ignore lint/style/noCommaOperator: indirect call to eval() to ensure global scope
   const compiledTemplatingFunction = (0, eval)(
     // biome-ignore lint/style/useTemplate: needed for compiling
-    `(asReadable) => (function ({ ${[
-      ...new Set(params.map((s) => s.split('.')[0])),
-    ].join(', ')} }) {` +
-      `return asReadable\`${interpolated.map((s) => serialize(s)).join('')}\`` +
+    `(asReadable) => (function ({ ${[...new Set(params.map(s => s.split('.')[0]))].join(
+      ', ',
+    )} }) {` +
+      `return asReadable\`${interpolated.map(s => serialize(s)).join('')}\`` +
       '})',
   )(asReadable)
 
@@ -75,5 +75,5 @@ function serialize(frag) {
   if (typeof frag === 'object') {
     return `$\{${frag.param}}`
   }
-  return frag
+  return frag.replace(/\\/g, '\\\\').replace(/`/g, '\\`').replace(/\$\{/g, '\\${')
 }
diff --git a/mode/development.js b/mode/development.js
index af9de9d75a3689cd4f4b5d2876f2e38bd2674ae4..94ecb29a8e0d2615b1ecd0114dba7f3979dc2b11 100644
--- a/mode/development.js
+++ b/mode/development.js
@@ -79,7 +79,11 @@ async function setup(config) {
         }
       }
     }
-    const indexHtmlPath = join(config.vite.root, 'index.html')
+    
+    // Request is decorated with viteHtmlFile in: packages/web/app/src/server/index.ts
+    // It is used to render more than one html file
+    const htmlFileName = req.viteHtmlFile ?? 'index.html';
+    const indexHtmlPath = join(config.vite.root,htmlFileName)
     const indexHtml = await read(indexHtmlPath, 'utf8')
     const transformedHtml = await this.devServer.transformIndexHtml(
       req.url,