diff --git a/www/routes/raw.ts b/www/routes/raw.ts
index eaf6ef5adf4..a0f08145b52 100644
--- a/www/routes/raw.ts
+++ b/www/routes/raw.ts
@@ -2,9 +2,20 @@ import { RouteConfig } from "$fresh/server.ts";
 import { MultiHandler } from "$fresh/server.ts";
 import { parse } from "$std/semver/mod.ts";
 import VERSIONS from "../../versions.json" assert { type: "json" };
+import { extname } from "$std/path/mod.ts";
 
 const BASE_URL = "https://raw.githubusercontent.com/denoland/fresh/";
 
+const contentTypes = new Map([
+  [".html", "text/plain"],
+  [".ts", "application/typescript"],
+  [".js", "application/javascript"],
+  [".tsx", "text/tsx"],
+  [".jsx", "text/jsx"],
+  [".json", "application/json"],
+  [".wasm", "application/wasm"],
+]);
+
 export const handler: MultiHandler = {
   async GET(req, ctx) {
     const accept = req.headers.get("Accept");
@@ -37,23 +48,11 @@ export const handler: MultiHandler = {
       return response;
     }
 
-    if (isHTML) {
-      response.headers.set("Content-Type", "text/plain");
-    } else if (path.endsWith(".ts")) {
-      response.headers.set("Content-Type", "application/typescript");
-    } else if (path.endsWith(".js")) {
-      response.headers.set("Content-Type", "application/javascript");
-    } else if (path.endsWith(".tsx")) {
-      response.headers.set("Content-Type", "text/tsx");
-    } else if (path.endsWith(".jsx")) {
-      response.headers.set("Content-Type", "text/jsx");
-    } else if (path.endsWith(".json")) {
-      response.headers.set("Content-Type", "application/json");
-    } else if (path.endsWith(".wasm")) {
-      response.headers.set("Content-Type", "application/wasm");
-    } else {
-      response.headers.set("Content-Type", "text/plain");
-    }
+    const value = isHTML
+      ? "text/plain"
+      : contentTypes.get(extname(path)) ?? "text/plain";
+    response.headers.set("Content-Type", value);
+
     return response;
   },
 };