diff --git a/.github/workflows/frontend-deploy.yml b/.github/workflows/frontend-deploy.yml
index 26153ef9..cf6f8eff 100644
--- a/.github/workflows/frontend-deploy.yml
+++ b/.github/workflows/frontend-deploy.yml
@@ -13,12 +13,16 @@ on:
       - '**/wrangler.jsonc'
       - '**/pnpm-*.yaml'
       - '.github/workflows/frontend-deploy.yml'
-  pull_request:
   workflow_dispatch:
+  workflow_call:
+    inputs:
+      environment:
+        required: true
+        type: string
+        description: 'The environment to deploy to (staging-preview or production-preview)'
 
 jobs:
   deploy:
-    if: github.repository_owner == 'modrinth'
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -34,15 +38,28 @@ jobs:
         id: meta
         run: |
           echo "cmd=deploy" >> $GITHUB_OUTPUT
-          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
+
+          ENV_INPUT="${{ inputs.environment }}"
+          REF="${{ github.ref }}"
+          SHA_SHORT="${GITHUB_SHA::8}"
+
+          if [ "$ENV_INPUT" = "staging-preview" ]; then
+            echo "env=staging" >> $GITHUB_OUTPUT
+            echo "url=https://git-$SHA_SHORT-frontend-staging.modrinth.workers.dev" >> $GITHUB_OUTPUT
+            echo "cmd=versions upload --preview-alias git-$SHA_SHORT --var PREVIEW:true" >> $GITHUB_OUTPUT
+
+          elif [ "$ENV_INPUT" = "production-preview" ]; then
+            echo "env=production" >> $GITHUB_OUTPUT
+            echo "url=https://git-$SHA_SHORT-frontend.modrinth.workers.dev" >> $GITHUB_OUTPUT
+            echo "cmd=versions upload --preview-alias git-$SHA_SHORT --var PREVIEW:true" >> $GITHUB_OUTPUT
+
+          elif [ "$REF" = "refs/heads/main" ]; then
             echo "env=staging" >> $GITHUB_OUTPUT
             echo "url=https://staging.modrinth.com" >> $GITHUB_OUTPUT
-          elif [ "${{ github.ref }}" != "refs/heads/prod" ] && [ "${{ github.ref }}" != "refs/heads/main" ]; then
-            echo "env=staging" >> $GITHUB_OUTPUT
-            echo "url=https://git-${GITHUB_SHA::8}-frontend-staging.modrinth.workers.dev" >> $GITHUB_OUTPUT
-            echo "cmd=versions upload --preview-alias git-${GITHUB_SHA::8} --var PREVIEW:true" >> $GITHUB_OUTPUT
+
           else
-            # Production env should be empty
+            # Production env (no preview)
+            echo "env=production" >> $GITHUB_OUTPUT
             echo "url=https://modrinth.com" >> $GITHUB_OUTPUT
           fi
 
@@ -77,6 +94,8 @@ jobs:
           CF_PAGES_BRANCH: ${{ github.ref_name }}
           CF_PAGES_COMMIT_SHA: ${{ github.sha }}
           CF_PAGES_URL: ${{ steps.meta.outputs.url }}
+          BUILD_ENV: ${{ steps.meta.outputs.env }}
+          PREVIEW: ${{ inputs.environment != '' && 'true' || 'false' }}
           SENTRY_AUTH_TOKEN: ${{ secrets.SENTRY_AUTH_TOKEN }}
 
       - name: Create Sentry release and upload sourcemaps
@@ -86,7 +105,7 @@ jobs:
           SENTRY_ORG: modrinth
           SENTRY_PROJECT: knossos-server
         with:
-          environment: ${{ steps.meta.outputs.env || 'production' }}
+          environment: ${{ steps.meta.outputs.env }}
           sourcemaps: ./apps/frontend/.output/server
           url_prefix: '~/'
 
@@ -96,7 +115,7 @@ jobs:
         with:
           apiToken: ${{ secrets.CF_API_TOKEN }}
           accountId: ${{ secrets.CF_ACCOUNT_ID }}
-          environment: ${{ steps.meta.outputs.env }}
+          environment: ${{ steps.meta.outputs.env != 'production' && steps.meta.outputs.env || '' }}
           workingDirectory: ./apps/frontend
           packageManager: pnpm
           wranglerVersion: '4.54.0'
@@ -111,15 +130,14 @@ jobs:
             --data '{"hosts": ["modrinth.com", "www.modrinth.com", "staging.modrinth.com"]}' \
             https://api.cloudflare.com/client/v4/zones/e39df17b9c4ef44cbce2646346ee6d33/purge_cache
 
-      - name: Comment deploy URL on PR
-        if: github.event_name == 'pull_request'
-        uses: peter-evans/create-or-update-comment@v4
-        with:
-          issue-number: ${{ github.event.pull_request.number }}
-          body: |
-            ## 🚀 Frontend Deploy
+      - name: Write deployment URL to file
+        if: ${{ inputs.environment != '' }}
+        run: |
+          echo "${{ steps.meta.outputs.url }}" > deployment-url-${{ inputs.environment }}.txt
 
-            | Commit | URL |
-            |--------|-----|
-            | ${{ github.event.pull_request.head.sha }} | ${{ steps.wrangler.outputs.deployment-url }} |
-          comment-tag: frontend-deploy
+      - name: Upload deployment URL
+        if: ${{ inputs.environment != '' }}
+        uses: actions/upload-artifact@v6
+        with:
+          name: deployment-url-${{ inputs.environment }}
+          path: deployment-url-${{ inputs.environment }}.txt
diff --git a/.github/workflows/frontend-preview.yml b/.github/workflows/frontend-preview.yml
new file mode 100644
index 00000000..e75a7122
--- /dev/null
+++ b/.github/workflows/frontend-preview.yml
@@ -0,0 +1,72 @@
+name: Deploy frontend preview
+
+on:
+  pull_request:
+    paths:
+      - 'apps/frontend/**/*'
+      - 'packages/ui/**/*'
+      - 'packages/utils/**/*'
+      - 'packages/assets/**/*'
+      - '**/wrangler.jsonc'
+      - '**/pnpm-*.yaml'
+      - '.github/workflows/frontend-preview.yml'
+
+jobs:
+  deploy:
+    if: github.repository_owner == 'modrinth' && github.event.pull_request.head.repo.full_name == github.repository
+    uses: ./.github/workflows/frontend-deploy.yml
+    secrets: inherit
+    strategy:
+      matrix:
+        environment: [staging-preview, production-preview]
+    with:
+      environment: ${{ matrix.environment }}
+
+  comment:
+    if: github.repository_owner == 'modrinth' && github.event.pull_request.head.repo.full_name == github.repository
+    runs-on: ubuntu-latest
+    needs: deploy
+    steps:
+      - name: Download deployment URLs
+        uses: actions/download-artifact@v7
+        with:
+          pattern: deployment-url-*
+          merge-multiple: true
+
+      - name: Read deployment URLs
+        id: urls
+        run: |
+          STAGING_PREVIEW_URL=$(cat deployment-url-staging-preview.txt)
+          PRODUCTION_PREVIEW_URL=$(cat deployment-url-production-preview.txt)
+
+          echo "Production preview URL: $PRODUCTION_PREVIEW_URL"
+          echo "Staging preview URL: $STAGING_PREVIEW_URL"
+
+          echo "staging-preview-url=$STAGING_PREVIEW_URL" >> $GITHUB_OUTPUT
+          echo "production-preview-url=$PRODUCTION_PREVIEW_URL" >> $GITHUB_OUTPUT
+
+      - name: Find comment
+        if: github.event_name == 'pull_request'
+        uses: peter-evans/find-comment@v3
+        id: fc
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: Frontend previews
+
+      - name: Comment deploy URL on PR
+        if: github.event_name == 'pull_request'
+        uses: peter-evans/create-or-update-comment@v5
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-id: ${{ steps.fc.outputs.comment-id }}
+          body: |
+            ## Frontend previews
+
+            Last deployed commit is [${{ github.sha }}](${{ github.event.pull_request.head.repo.html_url }}/commit/${{ github.sha }})
+
+            | Environment | URL |
+            |-------------|-----|
+            | staging     | ${{ steps.urls.outputs.staging-preview-url }} |
+            | production  | ${{ steps.urls.outputs.production-preview-url }} |
+          edit-mode: replace
diff --git a/apps/frontend/nuxt.config.ts b/apps/frontend/nuxt.config.ts
index 7a7e16c8..93afe78c 100644
--- a/apps/frontend/nuxt.config.ts
+++ b/apps/frontend/nuxt.config.ts
@@ -187,6 +187,8 @@ export default defineNuxtConfig({
 			pyroBaseUrl: process.env.PYRO_BASE_URL,
 			siteUrl: getDomain(),
 			production: isProduction(),
+			buildEnv: process.env.BUILD_ENV,
+			preview: process.env.PREVIEW === 'true',
 			featureFlagOverrides: getFeatureFlagOverrides(),
 
 			owner: process.env.VERCEL_GIT_REPO_OWNER || 'modrinth',
@@ -253,6 +255,7 @@ export default defineNuxtConfig({
 		},
 		replace: {
 			__SENTRY_RELEASE__: JSON.stringify(process.env.CF_PAGES_COMMIT_SHA || 'unknown'),
+			__SENTRY_ENVIRONMENT__: JSON.stringify(process.env.BUILD_ENV || 'development'),
 		},
 	},
 	devtools: {
diff --git a/apps/frontend/src/components/ui/ModrinthFooter.vue b/apps/frontend/src/components/ui/ModrinthFooter.vue
index 39283653..a641d109 100644
--- a/apps/frontend/src/components/ui/ModrinthFooter.vue
+++ b/apps/frontend/src/components/ui/ModrinthFooter.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 import { BlueskyIcon, DiscordIcon, GithubIcon, MastodonIcon, TwitterIcon } from '@modrinth/assets'
 import {
+	AutoLink,
 	ButtonStyled,
 	defineMessage,
 	defineMessages,
@@ -15,6 +16,7 @@ import TextLogo from '~/components/brand/TextLogo.vue'
 const flags = useFeatureFlags()
 const { formatMessage } = useVIntl()
 const { addNotification } = injectNotificationManager()
+const config = useRuntimeConfig()
 
 const messages = defineMessages({
 	modrinthInformation: {
@@ -302,6 +304,27 @@ function developerModeIncrement() {
 					</div>
 				</div>
 			</div>
+			<p v-if="flags.developerMode" class="m-0 text-sm text-secondary">
+				Based on
+				<a
+					v-if="config.public.owner && config.public.branch"
+					class="hover:underline"
+					target="_blank"
+					:href="`https://github.com/${config.public.owner}/code/tree/${config.public.branch}`"
+				>
+					{{ config.public.owner }}/{{ config.public.branch }}
+				</a>
+				@
+				<span v-if="config.public.hash === 'unknown'">unknown</span>
+				<AutoLink
+					v-else
+					class="text-link"
+					target="_blank"
+					:to="`https://github.com/${config.public.owner}/code/commit/${config.public.hash}`"
+				>
+					{{ config.public.hash }}
+				</AutoLink>
+			</p>
 			<div class="flex justify-center text-center text-xs font-medium text-secondary opacity-50">
 				{{ formatMessage(messages.legalDisclaimer) }}
 			</div>
diff --git a/apps/frontend/src/components/ui/banner/PreviewBanner.vue b/apps/frontend/src/components/ui/banner/PreviewBanner.vue
new file mode 100644
index 00000000..141f6564
--- /dev/null
+++ b/apps/frontend/src/components/ui/banner/PreviewBanner.vue
@@ -0,0 +1,86 @@
+<script setup lang="ts">
+import { XIcon } from '@modrinth/assets'
+import {
+	ButtonStyled,
+	commonMessages,
+	defineMessages,
+	IntlFormatted,
+	normalizeChildren,
+	PagewideBanner,
+	useVIntl,
+} from '@modrinth/ui'
+
+const { formatMessage } = useVIntl()
+const flags = useFeatureFlags()
+const config = useRuntimeConfig()
+
+const messages = defineMessages({
+	title: {
+		id: 'layout.banner.preview.title',
+		defaultMessage: `This is a preview deploy of the Modrinth website.`,
+	},
+	description: {
+		id: 'layout.banner.preview.description',
+		defaultMessage: `If you meant to access the official Modrinth website, visit <link>https://modrinth.com</link>. This preview deploy is used by Modrinth staff for testing purposes. It was built using <branch-link>{owner}/{branch}</branch-link> @ {commit}.`,
+	},
+})
+
+function hidePreviewBanner() {
+	flags.value.hidePreviewBanner = true
+	saveFeatureFlags()
+}
+</script>
+
+<template>
+	<PagewideBanner v-if="!flags.hidePreviewBanner" variant="info">
+		<template #title>
+			<span>{{ formatMessage(messages.title) }}</span>
+		</template>
+		<template #description>
+			<span>
+				<IntlFormatted
+					:message-id="messages.description"
+					:values="{
+						owner: config.public.owner,
+						branch: config.public.branch,
+					}"
+				>
+					<template #link="{ children }">
+						<a href="https://modrinth.com" target="_blank" rel="noopener" class="text-link">
+							<component :is="() => normalizeChildren(children)" />
+						</a>
+					</template>
+					<template #branch-link="{ children }">
+						<a
+							:href="`https://github.com/${config.public.owner}/code/tree/${config.public.branch}`"
+							target="_blank"
+							rel="noopener"
+							class="hover:underline"
+						>
+							<component :is="() => normalizeChildren(children)" />
+						</a>
+					</template>
+					<template #commit>
+						<span v-if="config.public.hash === 'unknown'">unknown</span>
+						<a
+							v-else
+							:href="`https://github.com/${config.public.owner}/code/commit/${config.public.hash}`"
+							target="_blank"
+							rel="noopener"
+							class="text-link"
+						>
+							{{ config.public.hash }}
+						</a>
+					</template>
+				</IntlFormatted>
+			</span>
+		</template>
+		<template #actions_right>
+			<ButtonStyled type="transparent" circular>
+				<button :aria-label="formatMessage(commonMessages.closeButton)" @click="hidePreviewBanner">
+					<XIcon aria-hidden="true" />
+				</button>
+			</ButtonStyled>
+		</template>
+	</PagewideBanner>
+</template>
diff --git a/apps/frontend/src/composables/featureFlags.ts b/apps/frontend/src/composables/featureFlags.ts
index 92798d9c..d7f5b721 100644
--- a/apps/frontend/src/composables/featureFlags.ts
+++ b/apps/frontend/src/composables/featureFlags.ts
@@ -42,22 +42,7 @@ export const DEFAULT_FEATURE_FLAGS = validateValues({
 	hideRussiaCensorshipBanner: false,
 	serverDiscovery: false,
 	disablePrettyProjectUrlRedirects: false,
-	// advancedRendering: true,
-	// externalLinksNewTab: true,
-	// notUsingBlockers: false,
-	// hideModrinthAppPromos: false,
-	// preferredDarkTheme: 'dark',
-	// hideStagingBanner: false,
-
-	// Project display modes
-	// modSearchDisplayMode: 'list',
-	// pluginSearchDisplayMode: 'list',
-	// resourcePackSearchDisplayMode: 'gallery',
-	// modpackSearchDisplayMode: 'list',
-	// shaderSearchDisplayMode: 'gallery',
-	// dataPackSearchDisplayMode: 'list',
-	// userProjectDisplayMode: 'list',
-	// collectionProjectDisplayMode: 'list',
+	hidePreviewBanner: false,
 } as const)
 
 export type FeatureFlag = keyof typeof DEFAULT_FEATURE_FLAGS
diff --git a/apps/frontend/src/layouts/default.vue b/apps/frontend/src/layouts/default.vue
index 10456d75..b156ddbd 100644
--- a/apps/frontend/src/layouts/default.vue
+++ b/apps/frontend/src/layouts/default.vue
@@ -47,6 +47,7 @@
 				route.path !== '/settings/billing'
 			"
 		/>
+		<PreviewBanner v-if="config.public.buildEnv === 'production' && config.public.preview" />
 		<StagingBanner v-if="config.public.apiBaseUrl.startsWith('https://staging-api.modrinth.com')" />
 		<GeneratedStateErrorsBanner
 			:errors="generatedStateErrors"
@@ -723,6 +724,7 @@ import { isAdmin, isStaff, UserBadge } from '@modrinth/utils'
 import TextLogo from '~/components/brand/TextLogo.vue'
 import BatchCreditModal from '~/components/ui/admin/BatchCreditModal.vue'
 import GeneratedStateErrorsBanner from '~/components/ui/banner/GeneratedStateErrorsBanner.vue'
+import PreviewBanner from '~/components/ui/banner/PreviewBanner.vue'
 import RussiaBanner from '~/components/ui/banner/RussiaBanner.vue'
 import StagingBanner from '~/components/ui/banner/StagingBanner.vue'
 import SubscriptionPaymentFailedBanner from '~/components/ui/banner/SubscriptionPaymentFailedBanner.vue'
diff --git a/apps/frontend/src/locales/en-US/index.json b/apps/frontend/src/locales/en-US/index.json
index 6a5f63fb..01a50b0f 100644
--- a/apps/frontend/src/locales/en-US/index.json
+++ b/apps/frontend/src/locales/en-US/index.json
@@ -1337,6 +1337,12 @@
   "layout.banner.build-fail.title": {
     "message": "Error generating state from API when building."
   },
+  "layout.banner.preview.description": {
+    "message": "If you meant to access the official Modrinth website, visit <link>https://modrinth.com</link>. This preview deploy is used by Modrinth staff for testing purposes. It was built using <branch-link>{owner}/{branch}</branch-link> @ {commit}."
+  },
+  "layout.banner.preview.title": {
+    "message": "This is a preview deploy of the Modrinth website."
+  },
   "layout.banner.staging.description": {
     "message": "The staging environment is completely separate from the production Modrinth database. This is used for testing and debugging purposes, and may be running in-development versions of the Modrinth backend or frontend newer than the production instance."
   },
diff --git a/apps/frontend/src/server/plugins/sentry-cloudflare-plugin.ts b/apps/frontend/src/server/plugins/sentry-cloudflare-plugin.ts
index 1bcb0ab1..4f103424 100644
--- a/apps/frontend/src/server/plugins/sentry-cloudflare-plugin.ts
+++ b/apps/frontend/src/server/plugins/sentry-cloudflare-plugin.ts
@@ -1,11 +1,13 @@
 import { sentryCloudflareNitroPlugin } from '@sentry/nuxt/module/plugins'
 
 declare const __SENTRY_RELEASE__: string
+declare const __SENTRY_ENVIRONMENT__: string
 
 export default defineNitroPlugin(
 	sentryCloudflareNitroPlugin({
 		dsn: 'https://9cf8f56ab7055ab6b1042fad535f2a44@o485889.ingest.us.sentry.io/4510709722185728',
 		tracesSampleRate: 0.0001, // match with wrangler.jsonc
 		release: __SENTRY_RELEASE__,
+		environment: __SENTRY_ENVIRONMENT__,
 	}),
 )
diff --git a/packages/ui/src/components/base/AutoLink.vue b/packages/ui/src/components/base/AutoLink.vue
index 36fd26a7..192c9aa8 100644
--- a/packages/ui/src/components/base/AutoLink.vue
+++ b/packages/ui/src/components/base/AutoLink.vue
@@ -1,8 +1,8 @@
 <template>
-	<router-link v-if="to.path || to.query || to.startsWith('/')" :to="to" v-bind="$attrs">
+	<router-link v-if="to?.path || to?.query || to?.startsWith('/')" :to="to" v-bind="$attrs">
 		<slot />
 	</router-link>
-	<a v-else-if="to.startsWith('http')" :href="to" v-bind="$attrs">
+	<a v-else-if="to?.startsWith('http')" :href="to" v-bind="$attrs">
 		<slot />
 	</a>
 	<span v-else v-bind="$attrs">
diff --git a/turbo.jsonc b/turbo.jsonc
index aec2b343..dabc927b 100644
--- a/turbo.jsonc
+++ b/turbo.jsonc
@@ -15,6 +15,8 @@
 				"NODE_ENV",
 				"SITE_URL",
 				"BASE_URL",
+				"PREVIEW",
+				"BUILD_ENV",
 				"FLAG_OVERRIDES",
 				"BROWSER_BASE_URL",
 				"RATE_LIMIT_IGNORE_KEY",
@@ -32,7 +34,9 @@
 				"RUST_*",
 				"RUSTFLAGS",
 				"FORCE_COLOR",
-				"NEXTEST_*"
+				"NEXTEST_*",
+				"BUILD_ENV",
+				"PREVIEW"
 			]
 		},
 		"lint": {