diff --git a/src/workspaces/officerdev/src/apps/Preview/PreviewApp.tsx b/src/workspaces/officerdev/src/apps/Preview/PreviewApp.tsx
index 81167101..b08f3a9d 100644
--- a/src/workspaces/officerdev/src/apps/Preview/PreviewApp.tsx
+++ b/src/workspaces/officerdev/src/apps/Preview/PreviewApp.tsx
@@ -3,6 +3,7 @@ import { Globe } from 'lucide-react';
 import { useClient } from 'hooks/useClient';
 import { useWorkspace } from '../../components/Workspace';
 import { normalizeUrl, usePreview } from './use-preview';
+import { useTranslation } from '../../locales';
 
 /**
  * A live app, in a panel.
@@ -19,6 +20,7 @@ import { normalizeUrl, usePreview } from './use-preview';
  * machine; pretending otherwise with an attribute that does not hold is worse than not claiming it.
  */
 export const PreviewApp = ({ panelId }: { panelId: string }) => {
+  const { t } = useTranslation();
   const { workspace } = useWorkspace();
   const { url, target, setUrl, reportLocation, reloadToken } = usePreview(panelId, workspace);
   const [draft, setDraft] = useState('');
@@ -34,7 +36,7 @@ export const PreviewApp = ({ panelId }: { panelId: string }) => {
         }}
       >
         <Globe className="h-6 w-6 text-duck-dark/30" />
-        <span className="text-sm text-duck-dark/50">Point this panel at a running app</span>
+        <span className="text-sm text-duck-dark/50">{t('preview.pointAtApp')}</span>
         <input
           autoFocus
           value={draft}
@@ -47,11 +49,9 @@ export const PreviewApp = ({ panelId }: { panelId: string }) => {
           disabled={!normalizeUrl(draft)}
           className="rounded-md bg-duck-teal px-3 py-1.5 text-sm text-duck-yellow transition-opacity hover:opacity-90 disabled:opacity-40"
         >
-          Open
+          {t('preview.open')}
         </button>
-        <p className="text-xs text-duck-dark/40">
-          Anything the browser can reach. It stays on this panel and survives a reload.
-        </p>
+        <p className="text-xs text-duck-dark/40">{t('preview.hint')}</p>
       </form>
     );
   }
@@ -86,6 +86,7 @@ type DevProxyFrameProps = {
 };
 
 export const DevProxyFrame = ({ entry, target, reloadToken, onLocation }: DevProxyFrameProps) => {
+  const { t } = useTranslation();
   const { get } = useClient();
   const needsSession = entry.startsWith('/api/dev-proxy/');
   const [ready, setReady] = useState(!needsSession);
@@ -95,7 +96,7 @@ export const DevProxyFrame = ({ entry, target, reloadToken, onLocation }: DevPro
    * The session cookie, and why this effect must NOT watch the URL.
    *
    * It used to depend on the full composed URL, which changes every time the app navigates. Each change
-   * re-ran this, and `setReady(false)` tears the frame down to show "Connecting…" — so a route change was
+   * re-ran this, and `setReady(false)` tears the frame down to show t('preview.connecting') — so a route change was
    * followed, one debounce later, by the whole app reloading. Reported as "I change routes and a second
    * later the page refreshes"; the second was the 800ms debounce on writing the location down.
    *
@@ -128,7 +129,9 @@ export const DevProxyFrame = ({ entry, target, reloadToken, onLocation }: DevPro
     );
   }
   if (!ready) {
-    return <div className="flex h-full items-center justify-center text-xs text-duck-dark/40">Connecting…</div>;
+    return (
+      <div className="flex h-full items-center justify-center text-xs text-duck-dark/40">{t('preview.connecting')}</div>
+    );
   }
   // Keyed on the ENTRY url as well as the reload counter. Freezing `src` at mount stopped the app's own
   // navigation from reloading the frame — and stopped a newly typed URL from loading at all, since nothing
@@ -159,6 +162,7 @@ export const DevProxyFrame = ({ entry, target, reloadToken, onLocation }: DevPro
  * two panels are never pointed at the same port.
  */
 const PreviewFrame = ({ initialSrc, onLocation }: { initialSrc: string; onLocation: (path: string) => void }) => {
+  const { t } = useTranslation();
   const [src] = useState(initialSrc);
   const frame = useRef<HTMLIFrameElement | null>(null);
 
@@ -174,5 +178,5 @@ const PreviewFrame = ({ initialSrc, onLocation }: { initialSrc: string; onLocati
     return () => window.removeEventListener('message', onMessage);
   }, [onLocation]);
 
-  return <iframe ref={frame} src={src} title="Preview" className="h-full w-full border-none bg-white" />;
+  return <iframe ref={frame} src={src} title={t('preview.title')} className="h-full w-full border-none bg-white" />;
 };
diff --git a/src/workspaces/officerdev/src/apps/Preview/PreviewHeader.tsx b/src/workspaces/officerdev/src/apps/Preview/PreviewHeader.tsx
index 79a51faf..8716bcec 100644
--- a/src/workspaces/officerdev/src/apps/Preview/PreviewHeader.tsx
+++ b/src/workspaces/officerdev/src/apps/Preview/PreviewHeader.tsx
@@ -2,17 +2,19 @@ import { useEffect, useState } from 'react';
 import { Globe, RefreshCw, ExternalLink, Pencil, Check, X } from 'lucide-react';
 import { useWorkspace } from '../../components/Workspace';
 import { normalizeUrl, usePreview } from './use-preview';
+import { useTranslation } from '../../locales';
 
 /**
  * The preview panel's header: where it points, reload, open in a real tab, and change it.
  *
- * "Open in a new tab" is not decoration. A framed app gets PARTITIONED storage — the browser keys it by
+ * t('preview.openNewTab') is not decoration. A framed app gets PARTITIONED storage — the browser keys it by
  * top-level site — so the login inside this panel is separate from the login in a tab, and a page that
  * refuses to be framed at all (`X-Frame-Options`, CSP `frame-ancestors`) renders blank here with only a
  * console error. When either happens, the tab is the answer, and it should be one click away rather than
  * something you rebuild by copying the URL out.
  */
 export const PreviewHeader = ({ panelId }: { panelId?: string }) => {
+  const { t, tUi } = useTranslation();
   const { workspace } = useWorkspace();
   const { url, target, display, setUrl, reload } = usePreview(panelId, workspace);
 
@@ -46,13 +48,13 @@ export const PreviewHeader = ({ panelId }: { panelId?: string }) => {
           }}
           className="min-w-0 flex-1 rounded border border-duck-dark/20 bg-transparent px-1.5 py-0.5 text-xs"
         />
-        <button type="submit" title="Save" className="p-0.5 cursor-pointer shrink-0">
+        <button type="submit" title={t('common.save')} className="p-0.5 cursor-pointer shrink-0">
           <Check className="h-3 w-3" />
         </button>
         <button
           type="button"
           onClick={() => setEditing(false)}
-          title="Cancel"
+          title={tUi('button.cancel')}
           className="p-0.5 cursor-pointer shrink-0"
         >
           <X className="h-3 w-3" />
@@ -64,10 +66,14 @@ export const PreviewHeader = ({ panelId }: { panelId?: string }) => {
   return (
     <>
       <Globe className="h-3.5 w-3.5 shrink-0 text-duck-teal" />
-      <span className="text-xs font-medium shrink-0">Preview</span>
+      <span className="text-xs font-medium shrink-0">{t('preview.title')}</span>
       {url ? (
         <>
-          <button onClick={reload} title="Reload" className="p-0.5 rounded hover:bg-black/10 cursor-pointer shrink-0">
+          <button
+            onClick={reload}
+            title={t('preview.reload')}
+            className="p-0.5 rounded hover:bg-black/10 cursor-pointer shrink-0"
+          >
             <RefreshCw className="h-3 w-3" />
           </button>
           <span className="min-w-0 flex-1 truncate text-[10px] font-mono opacity-60" title={display}>
@@ -75,7 +81,7 @@ export const PreviewHeader = ({ panelId }: { panelId?: string }) => {
           </span>
           <button
             onClick={() => setEditing(true)}
-            title="Change URL"
+            title={t('preview.changeUrl')}
             className="p-0.5 rounded hover:bg-black/10 cursor-pointer shrink-0"
           >
             <Pencil className="h-3 w-3" />
@@ -84,7 +90,7 @@ export const PreviewHeader = ({ panelId }: { panelId?: string }) => {
             href={target}
             target="_blank"
             rel="noreferrer"
-            title="Open in a new tab"
+            title={t('preview.openNewTab')}
             className="p-0.5 rounded hover:bg-black/10 cursor-pointer shrink-0"
           >
             <ExternalLink className="h-3 w-3" />