diff --git a/public/config.json b/public/config.json
index a5358af..4a11798 100644
--- a/public/config.json
+++ b/public/config.json
@@ -4,5 +4,6 @@
   "collection": "ai.syui.log.post",
   "network": "syu.is",
   "color": "#EF454A",
-  "siteUrl": "https://syui.ai"
+  "siteUrl": "https://syui.ai",
+		"oauth": true
 }
diff --git a/src/web/components/header.ts b/src/web/components/header.ts
index f85c2c9..6cb217e 100644
--- a/src/web/components/header.ts
+++ b/src/web/components/header.ts
@@ -1,12 +1,15 @@
 import { isLoggedIn, getLoggedInHandle } from '../lib/auth'
 
-export function renderHeader(currentHandle: string): string {
+export function renderHeader(currentHandle: string, oauth: boolean = true): string {
   const loggedIn = isLoggedIn()
   const handle = getLoggedInHandle()
 
-  const loginBtn = loggedIn
-    ? `<button type="button" class="header-btn user-btn" id="logout-btn" title="Logout">${handle || 'logout'}</button>`
-    : `<button type="button" class="header-btn login-btn" id="login-btn" title="Login"><img src="/icon/user.svg" alt="Login" class="login-icon"></button>`
+  let loginBtn = ''
+  if (oauth) {
+    loginBtn = loggedIn
+      ? `<button type="button" class="header-btn user-btn" id="logout-btn" title="Logout">${handle || 'logout'}</button>`
+      : `<button type="button" class="header-btn login-btn" id="login-btn" title="Login"><img src="/icon/user.svg" alt="Login" class="login-icon"></button>`
+  }
 
   return `
     <header id="header">
diff --git a/src/web/main.ts b/src/web/main.ts
index 20bcc12..6634d48 100644
--- a/src/web/main.ts
+++ b/src/web/main.ts
@@ -67,6 +67,9 @@ async function render(route: Route): Promise<void> {
       document.title = config.title
     }
 
+    // Check OAuth enabled
+    const oauthEnabled = config.oauth !== false
+
     // Handle OAuth callback if present (check both ? and #)
     const searchParams = new URLSearchParams(window.location.search)
     const hashParams = window.location.hash ? new URLSearchParams(window.location.hash.slice(1)) : null
@@ -108,7 +111,7 @@ async function render(route: Route): Promise<void> {
 
     if (!did) {
       app.innerHTML = `
-        ${renderHeader(handle)}
+        ${renderHeader(handle, oauthEnabled)}
         <div class="error">Could not resolve handle: ${handle}</div>
         ${renderFooter(handle)}
       `
@@ -139,7 +142,7 @@ async function render(route: Route): Promise<void> {
     const langList = Array.from(availableLangs)
 
     // Build page
-    let html = renderHeader(handle)
+    let html = renderHeader(handle, oauthEnabled)
 
     // Mode tabs (Blog/Browser/Post/PDS)
     const activeTab = route.type === 'postpage' ? 'post' :
@@ -264,7 +267,7 @@ async function render(route: Route): Promise<void> {
   } catch (error) {
     console.error('Render error:', error)
     app.innerHTML = `
-      ${renderHeader(currentHandle)}
+      ${renderHeader(currentHandle, false)}
       <div class="error">Error: ${error}</div>
       ${renderFooter(currentHandle)}
     `