diff --git a/components/user/UserPicker.vue b/components/user/UserPicker.vue
index 37cfedd5..ab1b237b 100644
--- a/components/user/UserPicker.vue
+++ b/components/user/UserPicker.vue
@@ -6,7 +6,7 @@ const all = useUsers()
 const router = useRouter()
 const masto = useMasto()
 const switchUser = (user: UserLogin) => {
-  if (user.account.id === currentUser.value?.account.id)
+  if (!user.guest && !currentUser.value?.guest && user.account.id === currentUser.value?.account.id)
     router.push(getAccountRoute(user.account))
   else
     masto.loginTo(user)
@@ -21,7 +21,7 @@ const switchUser = (user: UserLogin) => {
           flex rounded
           cursor-pointer
           aria-label="Switch user"
-          :class="user.account.id === currentUser?.account.id ? '' : 'op25 grayscale'"
+          :class="user.account?.id === currentUser?.account?.id ? '' : 'op25 grayscale'"
           hover="filter-none op100"
           @click="switchUser(user)"
         >
diff --git a/components/user/UserSignIn.vue b/components/user/UserSignIn.vue
index b9ae3589..c42b7594 100644
--- a/components/user/UserSignIn.vue
+++ b/components/user/UserSignIn.vue
@@ -1,7 +1,8 @@
 <script setup lang="ts">
 import Fuse from 'fuse.js'
 import { $fetch } from 'ofetch'
-import { DEFAULT_SERVER } from '~/constants'
+
+const masto = useMasto()
 
 const input = $ref<HTMLInputElement>()
 let server = $ref<string>('')
@@ -26,7 +27,7 @@ async function oauth() {
     server = server.split('/')[0]
 
   try {
-    location.href = await $fetch<string>(`/api/${server || DEFAULT_SERVER}/login`, {
+    location.href = await $fetch<string>(`/api/${server}/login`, {
       method: 'POST',
       body: {
         origin: location.origin,
@@ -46,6 +47,10 @@ async function oauth() {
   }
 }
 
+function explore() {
+  masto.loginTo({ server, guest: true })
+}
+
 async function handleInput() {
   if (server.startsWith('https://'))
     server = server.replace('https://', '')
@@ -180,9 +185,19 @@ onClickOutside($$(input), () => {
         </i18n-t>
       </span>
     </div>
-    <button flex="~ row" gap-x-2 items-center btn-solid mt2 :disabled="!server || busy">
-      <span aria-hidden="true" inline-block :class="busy ? 'i-ri:loader-2-fill animate animate-spin' : 'i-ri:login-circle-line'" class="rtl-flip" />
-      {{ $t('action.sign_in') }}
-    </button>
+    <div flex="~ gap2" mt2 items-center>
+      <button
+        type="button"
+        flex="~ row" gap-x-2 items-center btn-outline text-sm px2 py1 h-fit :disabled="!server || busy"
+        @click="explore"
+      >
+        <span aria-hidden="true" inline-block :class="busy ? 'i-ri:loader-2-fill animate animate-spin' : 'i-ri:user-4-line'" />
+        {{ $t('action.explore_as_a_guest') }}
+      </button>
+      <button flex="~ row" gap-x-2 items-center btn-solid :disabled="!server || busy">
+        <span aria-hidden="true" inline-block :class="busy ? 'i-ri:loader-2-fill animate animate-spin' : 'i-ri:login-circle-line'" class="rtl-flip" />
+        {{ $t('action.sign_in') }}
+      </button>
+    </div>
   </form>
 </template>
diff --git a/composables/command.ts b/composables/command.ts
index 086724ac..4f03fbb2 100644
--- a/composables/command.ts
+++ b/composables/command.ts
@@ -344,9 +344,9 @@ export const provideGlobalCommands = () => {
     parent: 'account-switch',
     scope: 'Switch account',
 
-    visible: () => user.account.id !== currentUser.value?.account.id,
+    visible: () => !user.guest && user.account.id !== currentUser.value?.account?.id,
 
-    name: () => t('command.switch_account', [getFullHandle(user.account)]),
+    name: () => t('command.switch_account', [getFullHandle(user)]),
     icon: 'i-ri:user-shared-line',
 
     onActivate() {
@@ -357,8 +357,7 @@ export const provideGlobalCommands = () => {
     scope: 'Account',
 
     visible: () => currentUser.value,
-
-    name: () => t('user.sign_out_account', [getFullHandle(currentUser.value!.account)]),
+    name: () => currentUser.value ? t('user.sign_out_account', [getFullHandle(currentUser.value)]) : '',
     icon: 'i-ri:logout-box-line',
 
     onActivate() {
diff --git a/composables/masto.ts b/composables/masto.ts
index b79fdb1a..b4ace079 100644
--- a/composables/masto.ts
+++ b/composables/masto.ts
@@ -1,7 +1,7 @@
 import type { Ref } from 'vue'
 import type { Account, Relationship, Status } from 'masto'
 import { withoutProtocol } from 'ufo'
-import type { ElkMasto } from '~/types'
+import type { ElkMasto, UserLogin } from '~/types'
 
 export const useMasto = () => useNuxtApp().$masto as ElkMasto
 
@@ -33,7 +33,11 @@ export function getServerName(account: Account) {
   return currentInstance.value?.uri || ''
 }
 
-export function getFullHandle(account: Account) {
+export function getFullHandle(_account: Account | UserLogin) {
+  if ('guest' in _account && _account.guest)
+    return `[anonymous]@${_account.server}`
+
+  const account = 'server' in _account ? _account.account : _account
   const handle = `@${account.acct}`
   if (!currentUser.value || account.acct.includes('@'))
     return handle
diff --git a/composables/users.ts b/composables/users.ts
index f43bd79d..c93d18d0 100644
--- a/composables/users.ts
+++ b/composables/users.ts
@@ -45,34 +45,37 @@ const instances = useLocalStorage<Record<string, Instance>>(STORAGE_KEY_SERVERS,
 const currentUserId = useLocalStorage<string>(STORAGE_KEY_CURRENT_USER, mock ? mock.user.account.id : '')
 
 export const currentUser = computed<UserLogin | undefined>(() => {
-  if (currentUserId.value) {
-    const user = users.value.find(user => user.account?.id === currentUserId.value)
-    if (user)
-      return user
-  }
-  // Fallback to the first account
-  return users.value[0]
+  if (!currentUserId.value)
+    // Fallback to the first account
+    return users.value[0]
+
+  const user = users.value.find(user => user.account?.id === currentUserId.value)
+  if (user)
+    return user
 })
 
-const publicInstance = ref<Instance | null>(null)
-export const currentInstance = computed<null | Instance>(() => currentUser.value ? instances.value[currentUser.value.server] ?? null : publicInstance.value)
+export const isGuest = computed(
+  () => currentUserId.value.startsWith('[anonymous]@') || !currentUser.value?.account?.acct,
+)
 
-export const publicServer = ref(DEFAULT_SERVER)
-export const currentServer = computed<string>(() => currentUser.value?.server || publicServer.value)
+export const currentServer = computed<string>(() => currentUser.value?.server || DEFAULT_SERVER)
+export const currentInstance = computed<null | Instance>(() => {
+  return instances.value[currentServer.value] ?? null
+})
 
-export const currentUserHandle = computed(() => currentUser.value?.account.id
-  ? `${currentUser.value.account.acct}@${currentInstance.value?.uri || currentServer.value}`
-  : '[anonymous]',
+export const currentUserHandle = computed(() =>
+  isGuest.value ? '[anonymous]' : currentUser.value!.account!.acct
+  ,
 )
 
 export const useUsers = () => users
 
 export const characterLimit = computed(() => currentInstance.value?.configuration.statuses.maxCharacters ?? DEFAULT_POST_CHARS_LIMIT)
 
-async function loginTo(user?: Omit<UserLogin, 'account'> & { account?: AccountCredentials }) {
+async function loginTo(user?: UserLogin) {
   const route = useRoute()
   const router = useRouter()
-  const server = user?.server || route.params.server as string || publicServer.value
+  const server = user?.server || (route.params.server as string)
   const masto = await loginMasto({
     url: `https://${server}`,
     accessToken: user?.token,
@@ -82,8 +85,11 @@ async function loginTo(user?: Omit<UserLogin, 'account'> & { account?: AccountCr
   })
 
   if (!user?.token) {
-    publicServer.value = server
-    publicInstance.value = await masto.instances.fetch()
+    const instance = await masto.instances.fetch()
+
+    currentUserId.value = `[anonymous]@${server}`
+    instances.value[server] = instance
+    users.value.push({ server, guest: true })
   }
 
   else {
@@ -107,7 +113,7 @@ async function loginTo(user?: Omit<UserLogin, 'account'> & { account?: AccountCr
       instances.value[server] = instance
 
       if (!users.value.some(u => u.server === user.server && u.token === user.token))
-        users.value.push(user as UserLogin)
+        users.value.push(user)
     }
     catch {
       await signout()
@@ -154,7 +160,7 @@ export function getUsersIndexByUserId(userId: string) {
 export async function removePushNotificationData(user: UserLogin, fromSWPushManager = true) {
   // clear push subscription
   user.pushSubscription = undefined
-  const { acct } = user.account
+  const { acct } = user.account!
   // clear request notification permission
   delete useLocalStorage<PushNotificationRequest>(STORAGE_KEY_NOTIFICATION, {}).value[acct]
   // clear push notification policy
@@ -197,7 +203,7 @@ export async function signout() {
 
   const masto = useMasto()
 
-  const _currentUserId = currentUser.value.account.id
+  const _currentUserId = currentUser.value.account!.id
 
   const index = users.value.findIndex(u => u.account?.id === _currentUserId)
 
@@ -228,7 +234,7 @@ export async function signout() {
 const notifications = reactive<Record<string, undefined | [Promise<WsEvents>, number]>>({})
 
 export const useNotifications = () => {
-  const id = currentUser.value?.account.id
+  const id = currentUser.value?.account!.id
   const masto = useMasto()
 
   const clearNotifications = () => {
@@ -286,9 +292,9 @@ export function useUserLocalStorage<T extends object>(key: string, initial: () =
   const all = storages.get(key) as Ref<Record<string, T>>
 
   return computed(() => {
-    const id = currentUser.value?.account.id
-      ? currentUser.value.account.acct
-      : '[anonymous]'
+    const id = isGuest.value
+      ? '[anonymous]'
+      : currentUser.value!.account!.acct
     all.value[id] = Object.assign(initial(), all.value[id] || {})
     return all.value[id]
   })
diff --git a/locales/en-GB.json b/locales/en-GB.json
index 55360186..970773c3 100644
--- a/locales/en-GB.json
+++ b/locales/en-GB.json
@@ -49,6 +49,7 @@
     "confirm": "Confirm",
     "edit": "Edit",
     "enter_app": "Enter App",
+    "explore_as_a_guest": "Explore as a guest",
     "favourite": "Favourite",
     "favourited": "Favourited",
     "more": "More",
diff --git a/locales/en-US.json b/locales/en-US.json
index d514a804..180645fd 100644
--- a/locales/en-US.json
+++ b/locales/en-US.json
@@ -50,6 +50,7 @@
     "confirm": "Confirm",
     "edit": "Edit",
     "enter_app": "Enter App",
+    "explore_as_a_guest": "Explore as a guest",
     "favourite": "Favorite",
     "favourite_count": "{0}",
     "favourited": "Favorited",
diff --git a/locales/zh-CN.json b/locales/zh-CN.json
index 5493ac76..4af9c5f3 100644
--- a/locales/zh-CN.json
+++ b/locales/zh-CN.json
@@ -49,6 +49,7 @@
     "confirm": "确认",
     "edit": "编辑",
     "enter_app": "进入应用",
+    "explore_as_a_guest": "游客浏览",
     "favourite": "喜欢",
     "favourited": "已喜欢",
     "more": "更多",
diff --git a/types/index.ts b/types/index.ts
index 874e7d10..79fb2a71 100644
--- a/types/index.ts
+++ b/types/index.ts
@@ -12,16 +12,15 @@ export interface AppInfo {
   vapid_key: string
 }
 
-export interface UserLogin {
+export type UserLogin = {
   server: string
   token?: string
-  account: AccountCredentials
   vapidKey?: string
   pushSubscription?: PushSubscription
-}
+} & ({ account: AccountCredentials; guest: false } | { account?: undefined; guest: true })
 
 export interface ElkMasto extends MastoClient {
-  loginTo (user?: Omit<UserLogin, 'account'> & { account?: AccountCredentials }): Promise<MastoClient>
+  loginTo(user?: UserLogin): Promise<MastoClient>
   loggedIn: Ref<boolean>
 }
 
diff --git a/unocss.config.ts b/unocss.config.ts
index 615bb193..3b0ef9b4 100644
--- a/unocss.config.ts
+++ b/unocss.config.ts
@@ -35,7 +35,7 @@ export default defineConfig({
       // buttons
       'btn-base': 'cursor-pointer disabled:pointer-events-none disabled:bg-$c-bg-btn-disabled disabled:text-$c-text-btn-disabled',
       'btn-solid': 'btn-base px-4 py-2 rounded text-$c-text-btn bg-$c-primary hover:bg-$c-primary-active',
-      'btn-outline': 'btn-base px-4 py-2 rounded text-$c-primary border border-$c-primary hover:bg-$c-primary hover:text-inverted',
+      'btn-outline': 'btn-base px-4 py-2 rounded text-$c-primary border border-$c-primary hover:bg-$c-primary hover:text-inverted disabled:border-$c-bg-btn-disabled',
       'btn-text': 'btn-base px-4 py-2 text-$c-primary hover:text-$c-primary-active',
       'btn-action-icon': 'btn-base hover:bg-active rounded-full h9 w9 flex items-center justify-center disabled:bg-transparent disabled:text-$c-text-secondary',