diff --git a/components/common/CommonPreviewPrompt.vue b/components/common/CommonPreviewPrompt.vue
new file mode 100644
index 00000000..d6df37db
--- /dev/null
+++ b/components/common/CommonPreviewPrompt.vue
@@ -0,0 +1,27 @@
+<script setup lang="ts">
+const build = useBuildInfo()
+</script>
+
+<template>
+  <div
+    m-2 p5 bg-rose:10 relative
+    rounded-lg of-hidden
+    flex="~ col gap-3"
+  >
+    <h2 font-bold text-rose>
+      {{ $t('help.build_preview.title') }}
+    </h2>
+    <p>
+      <i18n-t keypath="help.build_preview.desc1">
+        <NuxtLink :href="`https://github.com/elk-zone/elk/commit/${build.commit}`" target="_blank" text-rose hover:underline>
+          <code>{{ build.commit.slice(0, 7) }}</code>
+        </NuxtLink>
+      </i18n-t>
+    </p>
+    <p>{{ $t('help.build_preview.desc2') }}</p>
+    <p font-bold>
+      {{ $t('help.build_preview.desc3') }}
+    </p>
+    <div i-ri-git-pull-request-line absolute text-10em bottom--10 inset-ie--10 text-rose op10 class="-z-1" />
+  </div>
+</template>
diff --git a/layouts/default.vue b/layouts/default.vue
index 6f73ea45..be367ae0 100644
--- a/layouts/default.vue
+++ b/layouts/default.vue
@@ -2,7 +2,7 @@
 import { usePreferences } from '~/composables/settings'
 
 const route = useRoute()
-const userSettings = useUserSettings()
+const info = useBuildInfo()
 
 const wideLayout = computed(() => route.meta.wideLayout ?? false)
 
@@ -63,7 +63,9 @@ const isGrayscale = usePreferences('grayscaleMode')
         <div sticky top-0 h-screen flex="~ col" gap-2 py3 ms-2>
           <slot name="right">
             <div flex-auto />
+
             <PwaPrompt />
+            <LazyCommonPreviewPrompt v-if="info.env === 'preview'" />
             <NavFooter />
           </slot>
         </div>
diff --git a/locales/en-US.json b/locales/en-US.json
index 93ac1a52..779100a0 100644
--- a/locales/en-US.json
+++ b/locales/en-US.json
@@ -156,6 +156,12 @@
     "unsupported_file_format": "Unsupported file format"
   },
   "help": {
+    "build_preview": {
+      "desc1": "You are currently viewing a preview version of Elk from the community - {0}.",
+      "desc2": "It may contains unreviewed or even malicious changes.",
+      "desc3": "Don't log in with your real account.",
+      "title": "Preview deploy"
+    },
     "desc_highlight": "Expect some bugs and missing features here and there.",
     "desc_para1": "Thanks for your interest in trying out Elk, our work-in-progress Mastodon web client!",
     "desc_para2": "we are working hard on the development and improving it over time.",