diff --git a/public/app.js b/public/app.js
index 7981143..afb8c86 100644
--- a/public/app.js
+++ b/public/app.js
@@ -40,6 +40,7 @@ const state = {
   genreLevels: {},
   avoidGenres: new Set(),
   seeds: [], // [{ tmdb_id, media_type, title }]
+  editMode: false, // editing an existing profile (vs. first-time onboarding)
   mediaType: "movie",
   room: null,
   soloMode: false,
@@ -90,18 +91,20 @@ function renderGenreChips() {
   GENRES.forEach((g) => {
     const chip = document.createElement("button");
     chip.className = "chip";
-    chip.textContent = g.name;
+    const paint = (level) => {
+      chip.classList.toggle("like", level === 1);
+      chip.classList.toggle("love", level === 2);
+      chip.textContent = g.name + (level === 2 ? " ♥♥" : level === 1 ? " ♥" : "");
+    };
+    paint(state.genreLevels[g.id] || 0); // reflect current state (for edit prefill)
     chip.onclick = () => {
       const level = (state.genreLevels[g.id] || 0) + 1;
       if (level > 2) {
         delete state.genreLevels[g.id];
-        chip.classList.remove("like", "love");
-        chip.textContent = g.name;
+        paint(0);
       } else {
         state.genreLevels[g.id] = level;
-        chip.classList.toggle("like", level === 1);
-        chip.classList.toggle("love", level === 2);
-        chip.textContent = g.name + (level === 2 ? " ♥♥" : " ♥");
+        paint(level);
       }
     };
     box.appendChild(chip);
@@ -116,6 +119,7 @@ function renderAvoidChips() {
     const chip = document.createElement("button");
     chip.className = "chip";
     chip.textContent = g.name;
+    chip.classList.toggle("avoid", state.avoidGenres.has(g.id)); // reflect state (edit prefill)
     chip.onclick = () => {
       if (state.avoidGenres.has(g.id)) {
         state.avoidGenres.delete(g.id);
@@ -217,17 +221,20 @@ function renderSeedChips() {
 async function handleOnboarding() {
   const err = $("onboarding-error");
   err.textContent = "";
-  const username = $("username-input").value.trim();
-  if (!username) {
-    err.textContent = "Please enter a name.";
-    return;
-  }
   try {
-    const user = await api("/api/users", { method: "POST", body: JSON.stringify({ username }) });
-    state.userId = user.id;
-    state.username = user.username;
-    localStorage.setItem("cinemate_user_id", user.id);
-    localStorage.setItem("cinemate_username", user.username);
+    // First-time onboarding creates the user; edit mode reuses the current one.
+    if (!state.editMode) {
+      const username = $("username-input").value.trim();
+      if (!username) {
+        err.textContent = "Please enter a name.";
+        return;
+      }
+      const user = await api("/api/users", { method: "POST", body: JSON.stringify({ username }) });
+      state.userId = user.id;
+      state.username = user.username;
+      localStorage.setItem("cinemate_user_id", user.id);
+      localStorage.setItem("cinemate_username", user.username);
+    }
 
     const genreScores = {};
     for (const [id, level] of Object.entries(state.genreLevels)) {
@@ -236,13 +243,20 @@ async function handleOnboarding() {
     await api("/api/profile/quiz", {
       method: "POST",
       body: JSON.stringify({
-        user_id: user.id,
+        user_id: state.userId,
         genre_scores: genreScores,
         avoid_genres: [...state.avoidGenres],
-        seeds: state.seeds.map((s) => ({ tmdb_id: s.tmdb_id, media_type: s.media_type })),
+        seeds: state.seeds.map((s) => ({ tmdb_id: s.tmdb_id, media_type: s.media_type, title: s.title })),
       }),
     });
 
+    if (state.editMode) {
+      exitEditMode();
+      toast("Preferences saved");
+      showScreen("screen-lobby");
+      return;
+    }
+
     updateUserBadge();
     if (state.pendingCode) {
       $("join-code-input").value = state.pendingCode;
@@ -256,6 +270,44 @@ async function handleOnboarding() {
   }
 }
 
+// Open the quiz pre-filled with the current profile, to edit without a full reset.
+async function openEditPrefs() {
+  try {
+    const p = await api(`/api/profile/${state.userId}`);
+    state.genreLevels = {};
+    for (const [id, score] of Object.entries(p.genre_scores || {})) {
+      state.genreLevels[id] = Number(score) >= 0.9 ? 2 : 1;
+    }
+    state.avoidGenres = new Set((p.prefs?.avoid_genres || []).map(Number));
+    state.seeds = (p.prefs?.seeds || []).map((s) => ({
+      tmdb_id: s.tmdb_id,
+      media_type: s.media_type,
+      title: s.title || `#${s.tmdb_id}`,
+    }));
+  } catch {
+    state.genreLevels = {};
+    state.avoidGenres = new Set();
+    state.seeds = [];
+  }
+  state.editMode = true;
+  $("name-field").classList.add("hidden");
+  $("onboarding-title").textContent = "Edit preferences";
+  $("onboarding-continue").textContent = "Save";
+  renderGenreChips();
+  renderAvoidChips();
+  renderSeedChips();
+  hideSuggestions();
+  $("onboarding-error").textContent = "";
+  showScreen("screen-onboarding");
+}
+
+function exitEditMode() {
+  state.editMode = false;
+  $("name-field").classList.remove("hidden");
+  $("onboarding-title").textContent = "Welcome 👋";
+  $("onboarding-continue").textContent = "Continue";
+}
+
 // ── Lobby ────────────────────────────────────────────────────────────────────
 function setupMediaToggle() {
   document.querySelectorAll("#media-toggle .toggle-opt").forEach((btn) => {
@@ -690,6 +742,7 @@ function resetData() {
   closeWs();
   state.userId = null;
   state.username = null;
+  exitEditMode();
   state.genreLevels = {};
   state.avoidGenres = new Set();
   state.seeds = [];
@@ -747,6 +800,7 @@ function init() {
   $("match-continue-btn").onclick = () => showScreen("screen-swipe");
   $("copy-link-btn").onclick = () => copyText(inviteLink(), "Invite link");
   $("user-badge").onclick = showProfile;
+  $("edit-prefs-btn").onclick = openEditPrefs;
   $("reset-btn").onclick = resetData;
   $("profile-back-btn").onclick = () => showScreen("screen-lobby");
   $("trailer-close").onclick = closeTrailer;
diff --git a/public/index.html b/public/index.html
index e95b173..a9b9dd2 100644
--- a/public/index.html
+++ b/public/index.html
@@ -16,9 +16,11 @@ <h1>Cinemate</h1>
       <section id="content">
         <!-- ── Onboarding ─────────────────────────────────────────── -->
         <div class="screen" id="screen-onboarding">
-          <h2>Welcome 👋</h2>
-          <p class="muted">What's your name?</p>
-          <input id="username-input" class="input" type="text" placeholder="your name" maxlength="40" />
+          <h2 id="onboarding-title">Welcome 👋</h2>
+          <div id="name-field">
+            <p class="muted">What's your name?</p>
+            <input id="username-input" class="input" type="text" placeholder="your name" maxlength="40" />
+          </div>
 
           <p class="muted mt">Which genres do you like? <span class="hint">(tap once = like, twice = love)</span></p>
           <div id="genre-chips" class="chips"></div>
@@ -143,8 +145,9 @@ <h2>My watchlist</h2>
           <h2>Profile</h2>
           <div class="card-box">
             <p id="profile-name" class="muted"></p>
-            <p class="muted">Starting over clears your data on this device and re-runs the quiz.</p>
-            <button id="reset-btn" class="btn btn-primary mt">Start over (clear my data)</button>
+            <button id="edit-prefs-btn" class="btn btn-primary">Edit preferences</button>
+            <p class="muted mt">Starting over clears your data on this device and re-runs the quiz.</p>
+            <button id="reset-btn" class="btn mt">Start over (clear my data)</button>
           </div>
           <button id="profile-back-btn" class="btn-link mt">Back</button>
         </div>
diff --git a/src/index.ts b/src/index.ts
index 042c1f3..dc11a99 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -10,7 +10,7 @@ export { Room } from "./durable-objects/room";
 
 const app = new Hono<{ Bindings: Env }>();
 
-app.get("/api/health", (c) => c.json({ ok: true, service: "cinemate", version: "v2.8" }));
+app.get("/api/health", (c) => c.json({ ok: true, service: "cinemate", version: "v2.9" }));
 
 app.route("/api/users", users);
 app.route("/api/profile", profile);
diff --git a/src/lib/mappers.ts b/src/lib/mappers.ts
index 4000ad6..720e7db 100644
--- a/src/lib/mappers.ts
+++ b/src/lib/mappers.ts
@@ -1,6 +1,6 @@
 // Map D1 rows (Record<string, unknown>) → application types.
 
-import type { MediaType, Profile, ProfilePrefs, Room, RoomStatus, SeedTitle } from "../types";
+import type { MediaType, Profile, ProfilePrefs, Room, RoomStatus } from "../types";
 
 function parseJsonObject(value: unknown): Record<string, number> {
   if (typeof value !== "string") return {};
@@ -53,9 +53,10 @@ function parsePrefs(value: unknown): ProfilePrefs {
         .filter((s): s is Record<string, unknown> => !!s && typeof s === "object")
         .map((s) => ({
           tmdb_id: Number(s.tmdb_id),
-          media_type: s.media_type === "tv" ? "tv" : "movie",
+          media_type: s.media_type === "tv" ? ("tv" as const) : ("movie" as const),
+          title: typeof s.title === "string" ? s.title : undefined,
         }))
-        .filter((s): s is SeedTitle => Number.isFinite(s.tmdb_id) && s.tmdb_id > 0);
+        .filter((s) => Number.isFinite(s.tmdb_id) && s.tmdb_id > 0);
     }
     return out;
   } catch {
diff --git a/src/routes/profile.ts b/src/routes/profile.ts
index ec5af0b..624ea1e 100644
--- a/src/routes/profile.ts
+++ b/src/routes/profile.ts
@@ -10,13 +10,16 @@ function toNumberArray(value: unknown): number[] {
   return value.map(Number).filter((n) => Number.isFinite(n));
 }
 
-function toSeeds(value: unknown): { tmdb_id: number; media_type: "movie" | "tv" }[] {
+function toSeeds(
+  value: unknown,
+): { tmdb_id: number; media_type: "movie" | "tv"; title?: string }[] {
   if (!Array.isArray(value)) return [];
   return value
     .filter((s): s is Record<string, unknown> => !!s && typeof s === "object")
     .map((s) => ({
       tmdb_id: Number(s.tmdb_id),
       media_type: s.media_type === "tv" ? ("tv" as const) : ("movie" as const),
+      ...(typeof s.title === "string" ? { title: s.title.slice(0, 120) } : {}),
     }))
     .filter((s) => Number.isInteger(s.tmdb_id) && s.tmdb_id > 0)
     .slice(0, 6);
diff --git a/src/types.ts b/src/types.ts
index 2dd63d7..75be54d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -29,6 +29,7 @@ export interface User {
 export interface SeedTitle {
   tmdb_id: number;
   media_type: MediaType;
+  title?: string; // kept for display when editing preferences
 }
 
 /** Quiz preferences stored as JSON in profiles.prefs. Each is optional (empty = no filter). */