diff --git a/.cache/emby-user-context.json b/.cache/emby-user-context.json
index 37db410..59a013f 100644
--- a/.cache/emby-user-context.json
+++ b/.cache/emby-user-context.json
@@ -1386,7 +1386,7 @@
           "isPlayed": true
         },
         {
-          "id": "1330174",
+          "id": "1345802",
           "name": "Project Nazi: The Blueprints of Evil",
           "type": "Series",
           "seriesName": null,
@@ -1410,15 +1410,7 @@
           "isPlayed": true
         },
         {
-          "id": "1329610",
-          "name": "Prodigal Son",
-          "type": "Series",
-          "seriesName": null,
-          "datePlayed": null,
-          "isPlayed": true
-        },
-        {
-          "id": "1330186",
+          "id": "1345819",
           "name": "We Are Who We Are",
           "type": "Series",
           "seriesName": null,
@@ -1426,7 +1418,7 @@
           "isPlayed": true
         },
         {
-          "id": "1328552",
+          "id": "1345818",
           "name": "WandaVision",
           "type": "Series",
           "seriesName": null,
@@ -1434,7 +1426,7 @@
           "isPlayed": true
         },
         {
-          "id": "1328551",
+          "id": "1345812",
           "name": "The Falcon and The Winter Soldier",
           "type": "Series",
           "seriesName": null,
@@ -1442,7 +1434,7 @@
           "isPlayed": true
         },
         {
-          "id": "1328548",
+          "id": "1345806",
           "name": "Snowpiercer",
           "type": "Series",
           "seriesName": null,
@@ -1450,15 +1442,15 @@
           "isPlayed": true
         },
         {
-          "id": "1330183",
-          "name": "The Outsider",
+          "id": "1345815",
+          "name": "The Outsider (2020)",
           "type": "Series",
           "seriesName": null,
           "datePlayed": null,
           "isPlayed": true
         },
         {
-          "id": "1328549",
+          "id": "1345808",
           "name": "Station Eleven",
           "type": "Series",
           "seriesName": null,
@@ -1466,7 +1458,7 @@
           "isPlayed": true
         },
         {
-          "id": "1330988",
+          "id": "1348189",
           "name": "Moon Knight",
           "type": "Series",
           "seriesName": null,
@@ -1474,7 +1466,7 @@
           "isPlayed": true
         },
         {
-          "id": "1330175",
+          "id": "1345803",
           "name": "Rise of the Nazis",
           "type": "Series",
           "seriesName": null,
@@ -1482,23 +1474,15 @@
           "isPlayed": true
         },
         {
-          "id": "1329606",
-          "name": "Coyote",
+          "id": "1345813",
+          "name": "The Head (2020)",
           "type": "Series",
           "seriesName": null,
           "datePlayed": null,
           "isPlayed": true
         },
         {
-          "id": "1330182",
-          "name": "The Head",
-          "type": "Series",
-          "seriesName": null,
-          "datePlayed": null,
-          "isPlayed": true
-        },
-        {
-          "id": "1312988",
+          "id": "1344688",
           "name": "Domina",
           "type": "Series",
           "seriesName": null,
@@ -1506,7 +1490,7 @@
           "isPlayed": true
         },
         {
-          "id": "1330172",
+          "id": "1345800",
           "name": "Obi-Wan Kenobi",
           "type": "Series",
           "seriesName": null,
@@ -1514,7 +1498,7 @@
           "isPlayed": true
         },
         {
-          "id": "1328550",
+          "id": "1345810",
           "name": "The Book of Boba Fett",
           "type": "Series",
           "seriesName": null,
@@ -1522,7 +1506,7 @@
           "isPlayed": true
         },
         {
-          "id": "1330178",
+          "id": "1345807",
           "name": "Stanley Tucci: Searching for Italy",
           "type": "Series",
           "seriesName": null,
@@ -1546,7 +1530,7 @@
           "isPlayed": true
         },
         {
-          "id": "1330989",
+          "id": "1348190",
           "name": "The Man Who Fell to Earth",
           "type": "Series",
           "seriesName": null,
@@ -1619,7 +1603,7 @@
         }
       ],
       "excludedFolderLookup": {},
-      "lastSyncedAt": "2026-04-26T22:31:15.087Z"
+      "lastSyncedAt": "2026-04-28T01:58:15.752Z"
     },
     "ff5a825760c24f9ab6f63b04513909a4": {
       "views": [
diff --git a/src/lib/GenreCleanupPage.svelte b/src/lib/GenreCleanupPage.svelte
new file mode 100644
index 0000000..1b04364
--- /dev/null
+++ b/src/lib/GenreCleanupPage.svelte
@@ -0,0 +1,662 @@
+<script>
+	import Icon from '$lib/Icon.svelte';
+
+	export let users = [];
+	export let selectedUserId = null;
+
+	let sourceUserId = null;
+	let mediaType = 'Movie';
+	let searchTerm = '';
+	let searchResults = [];
+	let inspections = {};
+	let searchBusy = false;
+	let inspectAllBusy = false;
+	let applyAllBusy = false;
+	let searchError = '';
+	let actionError = '';
+	let actionMessage = '';
+
+	$: sourceUsers = users.filter((user) => user.embyGuid);
+	$: if (!sourceUsers.some((user) => user.id === sourceUserId)) {
+		sourceUserId = sourceUsers.some((user) => user.id === selectedUserId)
+			? selectedUserId
+			: (sourceUsers[0]?.id || null);
+	}
+	$: sourceUser = users.find((user) => user.id === sourceUserId);
+	$: inspectedCount = Object.values(inspections).filter((entry) => entry?.item).length;
+	$: readyToApplyCount = Object.values(inspections).filter(
+		(entry) => entry?.selectedGenre && !entry?.error
+	).length;
+
+	let lastSearchContext = '';
+	$: {
+		const nextSearchContext = `${sourceUserId || ''}:${mediaType}`;
+		if (nextSearchContext !== lastSearchContext) {
+			lastSearchContext = nextSearchContext;
+			searchResults = [];
+			inspections = {};
+			searchError = '';
+			actionError = '';
+			actionMessage = '';
+		}
+	}
+
+	async function searchLibrary() {
+		actionError = '';
+		actionMessage = '';
+		searchError = '';
+
+		if (!sourceUser?.embyGuid) {
+			searchError = 'Select a linked Emby user first.';
+			return;
+		}
+
+		if (!searchTerm.trim()) {
+			searchResults = [];
+			inspections = {};
+			return;
+		}
+
+		searchBusy = true;
+		try {
+			const params = new URLSearchParams({
+				userId: sourceUser.embyGuid,
+				term: searchTerm.trim(),
+				types: mediaType,
+				limit: '25'
+			});
+			const response = await fetch(`/api/emby-item-search?${params.toString()}`);
+			const body = await response.json().catch(() => ({ items: [] }));
+			if (!response.ok) throw new Error(body.message || body.error || response.statusText);
+			searchResults = body.items || [];
+			inspections = {};
+			actionMessage = searchResults.length
+				? `Found ${searchResults.length} ${mediaType === 'Movie' ? 'movie' : 'show'} matches.`
+				: 'No matching items were found.';
+		} catch (err) {
+			searchError = err.message;
+			searchResults = [];
+			inspections = {};
+		} finally {
+			searchBusy = false;
+		}
+	}
+
+	async function inspectItem(item) {
+		if (!sourceUser?.embyGuid || !item?.id) return;
+
+		inspections = {
+			...inspections,
+			[item.id]: {
+				...(inspections[item.id] || {}),
+				loading: true,
+				error: '',
+				updated: false
+			}
+		};
+
+		try {
+			const params = new URLSearchParams({
+				userId: sourceUser.embyGuid,
+				itemId: item.id
+			});
+			const response = await fetch(`/api/emby-genre-cleanup?${params.toString()}`);
+			const body = await response.json().catch(() => ({}));
+			if (!response.ok) throw new Error(body.message || body.error || response.statusText);
+
+			inspections = {
+				...inspections,
+				[item.id]: {
+					loading: false,
+					error: '',
+					updated: inspections[item.id]?.updated || false,
+					...body,
+					selectedGenre: body.suggestedGenre || body.tmdb?.genres?.[0] || ''
+				}
+			};
+		} catch (err) {
+			inspections = {
+				...inspections,
+				[item.id]: {
+					...(inspections[item.id] || {}),
+					loading: false,
+					error: err.message
+				}
+			};
+		}
+	}
+
+	function updateSelectedGenre(itemId, genreName) {
+		inspections = {
+			...inspections,
+			[itemId]: {
+				...(inspections[itemId] || {}),
+				selectedGenre: genreName
+			}
+		};
+	}
+
+	function syncSearchResultGenres(itemId, genreName) {
+		searchResults = searchResults.map((item) =>
+			item.id === itemId
+				? {
+					...item,
+					genres: genreName ? [genreName] : []
+				}
+				: item
+		);
+	}
+
+	async function applyGenre(item) {
+		const inspection = inspections[item.id];
+		if (!sourceUser?.embyGuid || !inspection?.selectedGenre) return;
+
+		actionError = '';
+		actionMessage = '';
+		inspections = {
+			...inspections,
+			[item.id]: {
+				...inspection,
+				applying: true,
+				error: ''
+			}
+		};
+
+		try {
+			const response = await fetch('/api/emby-genre-cleanup', {
+				method: 'POST',
+				headers: { 'Content-Type': 'application/json' },
+				body: JSON.stringify({
+					userId: sourceUser.embyGuid,
+					itemId: item.id,
+					genreName: inspection.selectedGenre
+				})
+			});
+			const body = await response.json().catch(() => ({}));
+			if (!response.ok) throw new Error(body.message || body.error || response.statusText);
+
+			inspections = {
+				...inspections,
+				[item.id]: {
+					loading: false,
+					applying: false,
+					error: '',
+					updated: true,
+					...body,
+					selectedGenre: inspection.selectedGenre
+				}
+			};
+			syncSearchResultGenres(item.id, inspection.selectedGenre);
+			actionMessage = `Updated "${item.name}" to ${inspection.selectedGenre}.`;
+		} catch (err) {
+			inspections = {
+				...inspections,
+				[item.id]: {
+					...inspection,
+					applying: false,
+					error: err.message
+				}
+			};
+			actionError = err.message;
+		}
+	}
+
+	async function inspectAllResults() {
+		if (!searchResults.length) return;
+		inspectAllBusy = true;
+		actionError = '';
+		actionMessage = '';
+
+		try {
+			for (const item of searchResults) {
+				if (!inspections[item.id]?.item) {
+					await inspectItem(item);
+				}
+			}
+			actionMessage = `Inspected ${searchResults.length} item${searchResults.length === 1 ? '' : 's'}.`;
+		} finally {
+			inspectAllBusy = false;
+		}
+	}
+
+	async function applyToAllInspected() {
+		const pendingItems = searchResults.filter((item) => {
+			const inspection = inspections[item.id];
+			return inspection?.selectedGenre && !inspection?.error;
+		});
+		if (!pendingItems.length) return;
+
+		applyAllBusy = true;
+		actionError = '';
+		actionMessage = '';
+
+		try {
+			for (const item of pendingItems) {
+				await applyGenre(item);
+			}
+			actionMessage = `Applied single-genre cleanup to ${pendingItems.length} item${pendingItems.length === 1 ? '' : 's'}.`;
+		} finally {
+			applyAllBusy = false;
+		}
+	}
+</script>
+
+<div class="genre-page">
+	<div class="page-header">
+		<div>
+			<div class="page-title-row">
+				<span class="page-icon"><Icon name="search" size={18} /></span>
+				<h2>Genre Cleanup</h2>
+			</div>
+			<p class="page-copy">Search movies or shows, compare Emby genres with TMDB genres, and reduce each title to one genre.</p>
+		</div>
+		<div class="page-actions">
+			<button class="btn ghost" on:click={inspectAllResults} disabled={!searchResults.length || inspectAllBusy || searchBusy || applyAllBusy}>
+				{inspectAllBusy ? 'Inspecting…' : 'Inspect all'}
+			</button>
+			<button class="btn accent" on:click={applyToAllInspected} disabled={!readyToApplyCount || inspectAllBusy || searchBusy || applyAllBusy}>
+				{applyAllBusy ? 'Applying…' : `Apply all (${readyToApplyCount})`}
+			</button>
+		</div>
+	</div>
+
+	<div class="genre-grid">
+		<div class="builder-main">
+			<section class="builder-card hero-card">
+				<div class="field-grid">
+					<label class="field">
+						<span class="field-label">Source user</span>
+						<select bind:value={sourceUserId}>
+							{#each sourceUsers as user}
+								<option value={user.id}>{user.name}</option>
+							{/each}
+						</select>
+					</label>
+					<label class="field">
+						<span class="field-label">Media type</span>
+						<select bind:value={mediaType}>
+							<option value="Movie">Movies</option>
+							<option value="Series">TV Shows</option>
+						</select>
+					</label>
+				</div>
+				<div class="lookup-row">
+					<input
+						type="text"
+						bind:value={searchTerm}
+						on:keydown={(event) => event.key === 'Enter' && searchLibrary()}
+						placeholder={mediaType === 'Movie' ? 'Search movies...' : 'Search shows...'}
+					/>
+					<button class="btn ghost" on:click={searchLibrary} disabled={searchBusy}>
+						{searchBusy ? 'Searching…' : 'Search'}
+					</button>
+				</div>
+				<p class="profile-note">The suggested genre uses TMDB order as a hint, but you can change the choice before writing it back to Emby.</p>
+			</section>
+
+			{#if searchError}
+				<div class="status error">{searchError}</div>
+			{/if}
+			{#if actionError}
+				<div class="status error">{actionError}</div>
+			{:else if actionMessage}
+				<div class="status ok">{actionMessage}</div>
+			{/if}
+
+			<section class="builder-card">
+				<div class="card-header">
+					<div class="card-title-row">
+						<Icon name="items" size={16} />
+						<h3>Matches</h3>
+					</div>
+					<span class="card-copy">Inspect one title at a time or batch the current search results.</span>
+				</div>
+
+				{#if !searchBusy && !searchResults.length}
+					<div class="empty-note">Search for a movie or show to start cleaning up its genres.</div>
+				{:else}
+					<div class="result-list">
+						{#each searchResults as item}
+							{@const inspection = inspections[item.id]}
+							<div class="result-card">
+								<div class="result-header">
+									<div>
+										<div class="result-name">{item.name}</div>
+										<div class="result-meta">
+											{item.type}{item.year ? ` · ${item.year}` : ''}
+											{#if inspection?.updated} · updated{/if}
+										</div>
+									</div>
+									<button class="btn ghost small" on:click={() => inspectItem(item)} disabled={inspection?.loading || inspection?.applying || applyAllBusy}>
+										{inspection?.loading ? 'Inspecting…' : 'Inspect'}
+									</button>
+								</div>
+
+								<div class="genre-row">
+									<span class="genre-label">Emby</span>
+									<span class="genre-value">{(inspection?.currentGenres || item.genres || []).join(', ') || 'None'}</span>
+								</div>
+
+								{#if inspection?.error}
+									<div class="status error inline-status">{inspection.error}</div>
+								{:else if inspection?.item}
+									<div class="genre-panel">
+										<div class="genre-row">
+											<span class="genre-label">TMDB</span>
+											<span class="genre-value">{inspection.tmdb?.genres?.join(', ') || 'No genres returned'}</span>
+										</div>
+										<div class="genre-row">
+											<span class="genre-label">Match</span>
+											<span class="genre-value">
+												{#if inspection.tmdb?.tmdbId}
+													{inspection.tmdb.source === 'providerId' ? 'Provider ID match' : 'Title search match'} · TMDB {inspection.tmdb.tmdbId}
+												{:else}
+													No TMDB match
+												{/if}
+											</span>
+										</div>
+
+										{#if inspection.tmdb?.genres?.length}
+											<div class="apply-grid">
+												<label class="field">
+													<span class="field-label">Single genre</span>
+													<select
+														value={inspection.selectedGenre}
+														on:change={(event) => updateSelectedGenre(item.id, event.target.value)}
+													>
+														{#each inspection.tmdb.genres as genre}
+															<option value={genre}>{genre}</option>
+														{/each}
+													</select>
+												</label>
+												<div class="apply-actions">
+													<button class="btn accent" on:click={() => applyGenre(item)} disabled={!inspection.selectedGenre || inspection.applying || applyAllBusy}>
+														{inspection.applying ? 'Applying…' : 'Apply single genre'}
+													</button>
+												</div>
+											</div>
+										{/if}
+									</div>
+								{/if}
+							</div>
+						{/each}
+					</div>
+				{/if}
+			</section>
+		</div>
+
+		<aside class="builder-side">
+			<section class="builder-card sticky-card">
+				<div class="card-header">
+					<div class="card-title-row">
+						<Icon name="spark" size={16} />
+						<h3>Summary</h3>
+					</div>
+				</div>
+				<div class="detail-row">
+					<span>Search results</span>
+					<strong>{searchResults.length}</strong>
+				</div>
+				<div class="detail-row">
+					<span>Inspected</span>
+					<strong>{inspectedCount}</strong>
+				</div>
+				<div class="detail-row">
+					<span>Ready to apply</span>
+					<strong>{readyToApplyCount}</strong>
+				</div>
+				<p class="detail-message">
+					TMDB can return multiple genres. This tool lets you use the first returned genre as a starting point without forcing that choice.
+				</p>
+			</section>
+		</aside>
+	</div>
+</div>
+
+<style>
+	.genre-page {
+		display: flex;
+		flex-direction: column;
+		gap: 18px;
+	}
+	.page-header {
+		display: flex;
+		justify-content: space-between;
+		gap: 16px;
+		align-items: flex-start;
+	}
+	.page-title-row,
+	.card-title-row {
+		display: flex;
+		align-items: center;
+		gap: 10px;
+	}
+	h2,
+	h3 {
+		margin: 0;
+		color: var(--text);
+	}
+	h2 {
+		font-size: 24px;
+		font-weight: 800;
+	}
+	h3 {
+		font-size: 15px;
+		font-weight: 800;
+	}
+	.page-copy,
+	.card-copy {
+		margin: 6px 0 0;
+		font-size: 13px;
+		line-height: 1.5;
+		color: var(--text-muted);
+	}
+	.page-actions {
+		display: flex;
+		gap: 12px;
+		flex-wrap: wrap;
+	}
+	.genre-grid {
+		display: grid;
+		grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.85fr);
+		gap: 18px;
+		align-items: start;
+	}
+	.builder-main,
+	.builder-side {
+		display: flex;
+		flex-direction: column;
+		gap: 18px;
+	}
+	.builder-card {
+		background: #0f1116;
+		border: 1px solid var(--border);
+		border-radius: 12px;
+		padding: 18px;
+	}
+	.hero-card {
+		padding-bottom: 14px;
+	}
+	.sticky-card {
+		position: sticky;
+		top: 24px;
+	}
+	.field-grid,
+	.apply-grid {
+		display: grid;
+		grid-template-columns: repeat(2, minmax(0, 1fr));
+		gap: 12px;
+	}
+	.field {
+		display: flex;
+		flex-direction: column;
+		gap: 6px;
+	}
+	.field-label {
+		font-size: 11px;
+		font-weight: 700;
+		text-transform: uppercase;
+		letter-spacing: 0.08em;
+		color: var(--text-muted);
+	}
+	.lookup-row {
+		display: grid;
+		grid-template-columns: minmax(0, 1fr) auto;
+		gap: 10px;
+		margin-top: 12px;
+	}
+	input,
+	select {
+		width: 100%;
+		box-sizing: border-box;
+		padding: 10px 12px;
+		border-radius: 10px;
+		border: 1px solid var(--border);
+		background: #12151b;
+		color: var(--text);
+		font-size: 13px;
+		font-family: inherit;
+	}
+	input:focus,
+	select:focus {
+		outline: none;
+		border-color: var(--border-strong);
+	}
+	.profile-note,
+	.detail-message {
+		margin: 12px 0 0;
+		font-size: 12px;
+		line-height: 1.5;
+		color: var(--text-muted);
+	}
+	.result-list {
+		display: flex;
+		flex-direction: column;
+		gap: 12px;
+		margin-top: 12px;
+	}
+	.result-card {
+		border: 1px solid var(--border);
+		border-radius: 10px;
+		background: #111419;
+		padding: 14px;
+	}
+	.result-header,
+	.detail-row,
+	.genre-row {
+		display: flex;
+		align-items: flex-start;
+		justify-content: space-between;
+		gap: 12px;
+	}
+	.result-name {
+		font-size: 14px;
+		font-weight: 600;
+		color: var(--text);
+	}
+	.result-meta,
+	.genre-label {
+		font-size: 12px;
+		color: var(--text-muted);
+	}
+	.genre-value {
+		font-size: 13px;
+		color: var(--text);
+		text-align: right;
+	}
+	.genre-panel {
+		display: flex;
+		flex-direction: column;
+		gap: 10px;
+		margin-top: 12px;
+		padding-top: 12px;
+		border-top: 1px solid var(--border);
+	}
+	.apply-actions {
+		display: flex;
+		align-items: flex-end;
+	}
+	.status {
+		border-radius: 10px;
+		padding: 10px 12px;
+		font-size: 13px;
+		background: rgba(255, 255, 255, 0.04);
+		border: 1px solid var(--border);
+	}
+	.status.ok {
+		border-color: rgba(34, 197, 94, 0.32);
+		color: #b7f3ca;
+	}
+	.status.error {
+		border-color: rgba(239, 68, 68, 0.32);
+		color: #ffc2c2;
+	}
+	.inline-status {
+		margin-top: 12px;
+	}
+	.empty-note {
+		margin-top: 12px;
+		font-size: 13px;
+		color: var(--text-muted);
+	}
+	.btn {
+		all: unset;
+		cursor: pointer;
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		gap: 8px;
+		padding: 10px 14px;
+		border-radius: 10px;
+		border: 1px solid var(--border);
+		font-size: 13px;
+		font-weight: 700;
+	}
+	.btn:disabled {
+		opacity: 0.45;
+		cursor: default;
+	}
+	.btn.ghost {
+		background: #12151b;
+		color: var(--text);
+	}
+	.btn.accent {
+		background: linear-gradient(135deg, #2ad7ef 0%, #1798b4 100%);
+		border-color: rgba(42, 215, 239, 0.35);
+		color: #071217;
+	}
+	.btn.small {
+		padding: 8px 12px;
+		font-size: 12px;
+	}
+	@media (max-width: 1100px) {
+		.genre-grid {
+			grid-template-columns: 1fr;
+		}
+		.sticky-card {
+			position: static;
+		}
+	}
+	@media (max-width: 700px) {
+		.page-header,
+		.apply-grid,
+		.field-grid {
+			grid-template-columns: 1fr;
+			display: grid;
+		}
+		.page-actions {
+			width: 100%;
+		}
+		.lookup-row {
+			grid-template-columns: 1fr;
+		}
+		.result-header,
+		.detail-row,
+		.genre-row {
+			flex-direction: column;
+		}
+		.genre-value {
+			text-align: left;
+		}
+	}
+</style>
diff --git a/src/lib/genre-cleanup.js b/src/lib/genre-cleanup.js
new file mode 100644
index 0000000..19cb0b7
--- /dev/null
+++ b/src/lib/genre-cleanup.js
@@ -0,0 +1,54 @@
+function normalizeGenreKey(value) {
+	return String(value || '')
+		.trim()
+		.toLowerCase()
+		.replace(/[^a-z0-9]+/g, '');
+}
+
+export function normalizeGenreNames(values) {
+	const seen = new Set();
+	const names = [];
+
+	for (const value of values || []) {
+		const trimmed = String(value || '').trim();
+		if (!trimmed) continue;
+		const key = normalizeGenreKey(trimmed);
+		if (!key || seen.has(key)) continue;
+		seen.add(key);
+		names.push(trimmed);
+	}
+
+	return names;
+}
+
+export function pickSuggestedGenre(tmdbGenres, currentGenres = []) {
+	const normalizedTmdbGenres = normalizeGenreNames(tmdbGenres);
+	if (!normalizedTmdbGenres.length) return '';
+
+	const currentKeys = new Set(normalizeGenreNames(currentGenres).map(normalizeGenreKey));
+	const matched = normalizedTmdbGenres.find((genre) => currentKeys.has(normalizeGenreKey(genre)));
+
+	return matched || normalizedTmdbGenres[0];
+}
+
+export function buildSingleGenreUpdate(item, genreName) {
+	const selectedGenre = String(genreName || '').trim();
+	if (!selectedGenre) {
+		throw new Error('A genre is required');
+	}
+
+	const nextItem = JSON.parse(JSON.stringify(item || {}));
+	const existingGenreItems = Array.isArray(item?.GenreItems) ? item.GenreItems : [];
+	const matchedGenreItem = existingGenreItems.find(
+		(entry) => normalizeGenreKey(entry?.Name) === normalizeGenreKey(selectedGenre)
+	);
+
+	nextItem.Genres = [selectedGenre];
+	nextItem.GenreItems = [
+		matchedGenreItem
+			? { ...matchedGenreItem, Name: selectedGenre }
+			: { Name: selectedGenre }
+	];
+
+	return nextItem;
+}
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index a5bf34b..2b7fe8b 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -1,6 +1,7 @@
 <script>
 	import SectionCard from '$lib/SectionCard.svelte';
 	import CollectionBuilderPage from '$lib/CollectionBuilderPage.svelte';
+	import GenreCleanupPage from '$lib/GenreCleanupPage.svelte';
 	import Icon from '$lib/Icon.svelte';
 	import SyncPanel from '$lib/SyncPanel.svelte';
 	import SqlModal from '$lib/SqlModal.svelte';
@@ -69,6 +70,11 @@
 			title: 'Recommendation Collections',
 			description: 'Generate box set sections from recent activity and seeded recommendations.'
 		},
+		genres: {
+			label: 'Genres',
+			title: 'Genre Cleanup',
+			description: 'Inspect Emby and TMDB genres, then reduce a movie or show to a single genre.'
+		},
 		settings: {
 			label: 'Settings',
 			title: 'Connections and Database',
@@ -214,6 +220,7 @@
 	const navigationItems = [
 		{ id: 'edit', label: 'Editor', icon: 'edit' },
 		{ id: 'collections', label: 'Collections', icon: 'collections' },
+		{ id: 'genres', label: 'Genres', icon: 'search' },
 		{ id: 'sync', label: 'Sync', icon: 'sync' },
 		{ id: 'settings', label: 'Settings', icon: 'settings' }
 	];
@@ -473,6 +480,25 @@
 						You can also add a box set row from the editor and look up an existing collection directly inside that section.
 					</div>
 				</div>
+			{:else if activeTab === 'genres'}
+				<div class="sidebar-section">
+					<div class="sidebar-title">Genre Cleanup</div>
+					<div class="sidebar-copy">
+						Search your Emby library, inspect TMDB genres, and write back a single genre per title.
+					</div>
+				</div>
+				<div class="sidebar-note">
+					<div class="note-title">Suggestion</div>
+					<div class="note-copy">
+						The tool suggests the first TMDB genre, but keeps the choice editable before anything is written.
+					</div>
+				</div>
+				<div class="sidebar-note">
+					<div class="note-title">Workflow</div>
+					<div class="note-copy">
+						Search, inspect, confirm the single genre you want, then apply it to one title or to the current inspected results.
+					</div>
+				</div>
 			{:else if activeTab === 'settings'}
 				<div class="sidebar-section">
 					<div class="sidebar-title">Operations</div>
@@ -740,6 +766,10 @@
 				<div class="view-shell">
 					<CollectionBuilderPage {users} {selectedUserId} on:created={onCollectionCreated} />
 				</div>
+			{:else if activeTab === 'genres'}
+				<div class="view-shell">
+					<GenreCleanupPage {users} {selectedUserId} />
+				</div>
 			{:else if activeTab === 'settings'}
 				<div class="view-shell settings-grid">
 					<div class="content-card">
diff --git a/src/routes/api/emby-genre-cleanup/+server.js b/src/routes/api/emby-genre-cleanup/+server.js
new file mode 100644
index 0000000..7ea3696
--- /dev/null
+++ b/src/routes/api/emby-genre-cleanup/+server.js
@@ -0,0 +1,173 @@
+import { error, json } from '@sveltejs/kit';
+import { normalizeLookupItem } from '../../../lib/collection-tools.js';
+import {
+	buildSingleGenreUpdate,
+	normalizeGenreNames,
+	pickSuggestedGenre
+} from '../../../lib/genre-cleanup.js';
+import { fetchEmby, fetchEmbyJson, normalizeEmbyGuid } from '../../../lib/server/emby-api.js';
+import { fetchTmdbDetails, searchTmdbByTitle } from '../../../lib/server/tmdb-api.js';
+
+function getItemTmdbId(item) {
+	const providerIds = item?.ProviderIds || item?.providerIds || {};
+	return String(providerIds.Tmdb || providerIds.TMDB || providerIds.tmdb || '').trim();
+}
+
+function getTmdbMediaType(item) {
+	return item?.Type === 'Series' || item?.type === 'Series' ? 'tv' : 'movie';
+}
+
+function normalizeTitle(value) {
+	return String(value || '')
+		.toLowerCase()
+		.replace(/[^a-z0-9]+/g, '');
+}
+
+async function fetchFullItem(userId, itemId) {
+	const candidates = [
+		() => fetchEmbyJson(`/Users/${encodeURIComponent(userId)}/Items/${encodeURIComponent(itemId)}`),
+		() =>
+			fetchEmbyJson(`/Items/${encodeURIComponent(itemId)}`, {
+				params: { UserId: userId }
+			})
+	];
+
+	let lastError = null;
+	for (const candidate of candidates) {
+		try {
+			return await candidate();
+		} catch (err) {
+			lastError = err;
+		}
+	}
+
+	throw lastError || new Error('Could not fetch item details from Emby');
+}
+
+async function resolveTmdbMatch(item) {
+	const directTmdbId = getItemTmdbId(item);
+	if (directTmdbId) {
+		return {
+			tmdbId: Number(directTmdbId),
+			mediaType: getTmdbMediaType(item),
+			source: 'providerId'
+		};
+	}
+
+	const matches = await searchTmdbByTitle({
+		mediaType: getTmdbMediaType(item),
+		name: item?.Name || item?.name,
+		year: item?.ProductionYear || item?.year
+	});
+	const exactTitle = normalizeTitle(item?.Name || item?.name);
+	const bestMatch =
+		matches.find(
+			(candidate) =>
+				normalizeTitle(candidate?.name) === exactTitle &&
+				(!item?.ProductionYear || !candidate?.year || candidate.year === item.ProductionYear)
+		) || matches[0];
+
+	if (!bestMatch?.tmdbId) return null;
+
+	return {
+		tmdbId: Number(bestMatch.tmdbId),
+		mediaType: bestMatch.mediaType,
+		source: 'search'
+	};
+}
+
+async function inspectItemGenres(userId, itemId) {
+	const fullItem = await fetchFullItem(userId, itemId);
+	const normalizedItem = normalizeLookupItem(fullItem);
+	const currentGenres = normalizeGenreNames([
+		...(fullItem?.Genres || []),
+		...((fullItem?.GenreItems || []).map((entry) => entry?.Name))
+	]);
+
+	const tmdbMatch = await resolveTmdbMatch(fullItem);
+	if (!tmdbMatch?.tmdbId) {
+		return {
+			item: normalizedItem,
+			currentGenres,
+			tmdb: null,
+			suggestedGenre: ''
+		};
+	}
+
+	const details = await fetchTmdbDetails(tmdbMatch);
+	const tmdbGenres = normalizeGenreNames((details?.genres || []).map((genre) => genre?.name));
+
+	return {
+		item: normalizedItem,
+		currentGenres,
+		tmdb: {
+			tmdbId: tmdbMatch.tmdbId,
+			mediaType: tmdbMatch.mediaType,
+			source: tmdbMatch.source,
+			genres: tmdbGenres
+		},
+		suggestedGenre: pickSuggestedGenre(tmdbGenres, currentGenres)
+	};
+}
+
+export async function GET({ url }) {
+	const userId = normalizeEmbyGuid(url.searchParams.get('userId'));
+	const itemId = String(url.searchParams.get('itemId') || '').trim();
+
+	if (!userId) {
+		throw error(400, 'Missing userId');
+	}
+
+	if (!itemId) {
+		throw error(400, 'Missing itemId');
+	}
+
+	try {
+		return json(await inspectItemGenres(userId, itemId));
+	} catch (err) {
+		if (String(err.message || '').includes('not configured')) {
+			throw error(400, err.message);
+		}
+		throw error(502, `Could not inspect item genres: ${err.message}`);
+	}
+}
+
+export async function POST({ request }) {
+	const body = await request.json();
+	const userId = normalizeEmbyGuid(body?.userId);
+	const itemId = String(body?.itemId || '').trim();
+	const genreName = String(body?.genreName || '').trim();
+
+	if (!userId) {
+		throw error(400, 'Missing userId');
+	}
+
+	if (!itemId) {
+		throw error(400, 'Missing itemId');
+	}
+
+	if (!genreName) {
+		throw error(400, 'Missing genreName');
+	}
+
+	try {
+		const fullItem = await fetchFullItem(userId, itemId);
+		const updatedItem = buildSingleGenreUpdate(fullItem, genreName);
+
+		await fetchEmby(`/Items/${encodeURIComponent(itemId)}`, {
+			method: 'POST',
+			headers: {
+				'Content-Type': 'application/json'
+			},
+			body: JSON.stringify(updatedItem)
+		});
+
+		return json(await inspectItemGenres(userId, itemId));
+	} catch (err) {
+		if (err?.status) throw err;
+		if (String(err.message || '').includes('not configured')) {
+			throw error(400, err.message);
+		}
+		throw error(502, `Could not update item genres: ${err.message}`);
+	}
+}
diff --git a/src/routes/api/emby-item-search/+server.js b/src/routes/api/emby-item-search/+server.js
index 1d8681c..5326e0d 100644
--- a/src/routes/api/emby-item-search/+server.js
+++ b/src/routes/api/emby-item-search/+server.js
@@ -27,7 +27,7 @@ export async function GET({ url }) {
 				Limit: limit,
 				SortBy: 'SortName',
 				SortOrder: 'Ascending',
-				Fields: 'Overview',
+				Fields: 'Overview,Genres,ProviderIds,ProductionYear',
 				IncludeItemTypes: types.join(','),
 				GroupItemsIntoCollections: false
 			}
diff --git a/tests/run-tests.js b/tests/run-tests.js
index 9ceaf32..089478e 100644
--- a/tests/run-tests.js
+++ b/tests/run-tests.js
@@ -9,6 +9,11 @@ import {
 	getWatchlistLabelsForTarget
 } from '../src/lib/constants.js';
 import { normalizeLookupItem, rankRecommendationResults } from '../src/lib/collection-tools.js';
+import {
+	buildSingleGenreUpdate,
+	normalizeGenreNames,
+	pickSuggestedGenre
+} from '../src/lib/genre-cleanup.js';
 import * as embyUserCache from '../src/lib/server/emby-user-cache.js';
 
 const tests = [];
@@ -280,6 +285,44 @@ test('normalizeLookupItem preserves already-normalized recommendation items', ()
 	});
 });
 
+test('normalizeGenreNames trims and deduplicates genre labels', () => {
+	assert.deepEqual(
+		normalizeGenreNames([' Drama ', 'Comedy', 'drama', '', null, 'Comedy ']),
+		['Drama', 'Comedy']
+	);
+});
+
+test('pickSuggestedGenre prefers an existing Emby genre if TMDB also includes it', () => {
+	assert.equal(
+		pickSuggestedGenre(['Action', 'Drama', 'Thriller'], ['Drama', 'Crime']),
+		'Drama'
+	);
+});
+
+test('pickSuggestedGenre falls back to the first TMDB genre when there is no overlap', () => {
+	assert.equal(
+		pickSuggestedGenre(['Action', 'Adventure'], ['Comedy']),
+		'Action'
+	);
+});
+
+test('buildSingleGenreUpdate keeps only the selected genre in both genre fields', () => {
+	const updated = buildSingleGenreUpdate(
+		{
+			Name: 'Example',
+			Genres: ['Drama', 'Crime'],
+			GenreItems: [
+				{ Name: 'Drama', Id: 62 },
+				{ Name: 'Crime', Id: 4910 }
+			]
+		},
+		'Crime'
+	);
+
+	assert.deepEqual(updated.Genres, ['Crime']);
+	assert.deepEqual(updated.GenreItems, [{ Name: 'Crime', Id: 4910 }]);
+});
+
 test('recommendation ranking deduplicates and prioritizes overlaps across seeds', () => {
 	const ranked = rankRecommendationResults(
 		['seed-a', 'seed-b'],