diff --git a/.changeset/brave-parrots-sleep.md b/.changeset/brave-parrots-sleep.md
new file mode 100644
index 000000000000..25f2bf51b394
--- /dev/null
+++ b/.changeset/brave-parrots-sleep.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix: basic mime type handling for prerendered pages in preview
diff --git a/.changeset/clean-garlics-deny.md b/.changeset/clean-garlics-deny.md
new file mode 100644
index 000000000000..0ff1a36d68e9
--- /dev/null
+++ b/.changeset/clean-garlics-deny.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+chore: use just a single library (mrmime) for mime type handling
diff --git a/packages/kit/package.json b/packages/kit/package.json
index 9adf66907765..78717c31a611 100644
--- a/packages/kit/package.json
+++ b/packages/kit/package.json
@@ -18,7 +18,7 @@
 		"esm-env": "^1.0.0",
 		"kleur": "^4.1.5",
 		"magic-string": "^0.30.0",
-		"mime": "^3.0.0",
+		"mrmime": "^1.0.1",
 		"sade": "^1.8.1",
 		"set-cookie-parser": "^2.6.0",
 		"sirv": "^2.0.2",
@@ -28,7 +28,6 @@
 	"devDependencies": {
 		"@playwright/test": "1.30.0",
 		"@types/connect": "^3.4.35",
-		"@types/mime": "^3.0.1",
 		"@types/node": "^16.18.6",
 		"@types/sade": "^1.7.4",
 		"@types/set-cookie-parser": "^2.4.2",
diff --git a/packages/kit/src/core/sync/create_manifest_data/index.js b/packages/kit/src/core/sync/create_manifest_data/index.js
index d5f8dd1cde6a..9ca662b78f58 100644
--- a/packages/kit/src/core/sync/create_manifest_data/index.js
+++ b/packages/kit/src/core/sync/create_manifest_data/index.js
@@ -1,7 +1,7 @@
 import fs from 'node:fs';
 import path from 'node:path';
 import colors from 'kleur';
-import mime from 'mime';
+import { lookup } from 'mrmime';
 import { list_files, runtime_directory } from '../../utils.js';
 import { posixify } from '../../../utils/filesystem.js';
 import { parse_route_id } from '../../../utils/routing.js';
@@ -48,7 +48,7 @@ export function create_assets(config) {
 	return list_files(config.kit.files.assets).map((file) => ({
 		file,
 		size: fs.statSync(path.resolve(config.kit.files.assets, file)).size,
-		type: mime.getType(file)
+		type: lookup(file) || null
 	}));
 }
 
diff --git a/packages/kit/src/exports/vite/preview/index.js b/packages/kit/src/exports/vite/preview/index.js
index 1e5045dd3bda..445334635d2c 100644
--- a/packages/kit/src/exports/vite/preview/index.js
+++ b/packages/kit/src/exports/vite/preview/index.js
@@ -1,6 +1,7 @@
 import fs from 'node:fs';
 import { join } from 'node:path';
 import { pathToFileURL } from 'node:url';
+import { lookup } from 'mrmime';
 import sirv from 'sirv';
 import { loadEnv, normalizePath } from 'vite';
 import { getRequest, setResponse } from '../../../exports/node/index.js';
@@ -141,7 +142,7 @@ export async function preview(vite, vite_config, svelte_config) {
 
 				if (prerendered) {
 					res.writeHead(200, {
-						'content-type': 'text/html',
+						'content-type': lookup(pathname) || 'text/html',
 						etag
 					});
 
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 166b9ce7e090..d18b5d8786e2 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -385,9 +385,9 @@ importers:
       magic-string:
         specifier: ^0.30.0
         version: 0.30.2
-      mime:
-        specifier: ^3.0.0
-        version: 3.0.0
+      mrmime:
+        specifier: ^1.0.1
+        version: 1.0.1
       sade:
         specifier: ^1.8.1
         version: 1.8.1
@@ -410,9 +410,6 @@ importers:
       '@types/connect':
         specifier: ^3.4.35
         version: 3.4.35
-      '@types/mime':
-        specifier: ^3.0.1
-        version: 3.0.1
       '@types/node':
         specifier: ^16.18.6
         version: 16.18.6
@@ -2141,10 +2138,6 @@ packages:
     resolution: {integrity: sha512-Hr5Jfhc9eYOQNPYO5WLDq/n4jqijdHNlDXjuAQkkt+mWdQR+XJToOHrsD4cPaMXpn6KO7y2+wM8AZEs8VpBLVA==}
     dev: true
 
-  /@types/mime@3.0.1:
-    resolution: {integrity: sha512-Y4XFY5VJAuw0FgAqPNd6NNoV44jbq9Bz2L7Rh/J6jLTiHBSBJa9fxqQIvkIld4GsoDOcCbvzOUAbLPsSKKg+uA==}
-    dev: true
-
   /@types/minimist@1.2.2:
     resolution: {integrity: sha512-jhuKLIRrhvCPLqwPcx6INqmKeiA5EWrsCOPhrlFSrbrmU4ZMPjj5Ul/oLCMDO98XRUIwVm78xICz4EPCektzeQ==}
     dev: true
@@ -4592,6 +4585,7 @@ packages:
     resolution: {integrity: sha512-jSCU7/VB1loIWBZe14aEYHU/+1UMEHoaO7qxCOVJOw9GgH72VAWppxNcjU+x9a2k3GSIBXNKxXQFqRvvZ7vr3A==}
     engines: {node: '>=10.0.0'}
     hasBin: true
+    dev: true
 
   /mimic-response@3.1.0:
     resolution: {integrity: sha512-z0yWI+4FDrrweS8Zmt4Ej5HdJmky15+L2e6Wgn3+iK5fWzb6T3fhNFq2+MeTRb064c6Wr4N/wv0DzQTjNzHNGQ==}