diff --git a/src/lib/components/party/Party.svelte b/src/lib/components/party/Party.svelte
index 1b90f745..957dcab0 100644
--- a/src/lib/components/party/Party.svelte
+++ b/src/lib/components/party/Party.svelte
@@ -20,7 +20,8 @@
 		useUpdateSummonUncap,
 		useSwapWeapons,
 		useSwapCharacters,
-		useSwapSummons
+		useSwapSummons,
+		useSyncAllPartyItems
 	} from '$lib/api/mutations/grid.mutations'
 
 	// TanStack Query mutations - Party
@@ -132,6 +133,7 @@
 	const swapWeapons = useSwapWeapons()
 	const swapCharacters = useSwapCharacters()
 	const swapSummons = useSwapSummons()
+	const syncAllItems = useSyncAllPartyItems()
 
 	// TanStack Query mutations - Party
 	const updatePartyMutation = useUpdateParty()
@@ -269,6 +271,17 @@
 	const mainWeaponElement = $derived(mainWeapon?.element ?? mainWeapon?.weapon?.element)
 	const partyElement = $derived((party as any)?.element)
 
+	// Check if any items in the party are linked to collection (for sync menu option)
+	const hasCollectionLinks = $derived.by(() => {
+		const hasLinkedWeapons = (party?.weapons ?? []).some((w) => w?.collectionWeaponId)
+		const hasLinkedCharacters = (party?.characters ?? []).some((c) => c?.collectionCharacterId)
+		const hasLinkedSummons = (party?.summons ?? []).some((s) => s?.collectionSummonId)
+		return hasLinkedWeapons || hasLinkedCharacters || hasLinkedSummons
+	})
+
+	// Check if syncing is in progress
+	const isSyncingAll = $derived(syncAllItems.isPending)
+
 	function handleTabChange(tab: GridType) {
 		activeTab = tab // Instant UI update
 
@@ -368,6 +381,25 @@
 		}
 	}
 
+	async function syncFromCollection() {
+		if (!canEdit() || !hasCollectionLinks) return
+
+		loading = true
+		error = null
+
+		try {
+			await syncAllItems.mutateAsync({
+				partyId: party.id,
+				partyShortcode: party.shortcode
+			})
+			// Party will be updated via cache invalidation
+		} catch (err: any) {
+			error = err.message || 'Failed to sync from collection'
+		} finally {
+			loading = false
+		}
+	}
+
 	let deleteDialogOpen = $state(false)
 	let deleting = $state(false)
 
@@ -846,6 +878,14 @@
 									<DropdownItem>
 										<button onclick={openEditDialog} disabled={loading}>Edit</button>
 									</DropdownItem>
+									{#if hasCollectionLinks}
+										<DropdownItem>
+											<button onclick={syncFromCollection} disabled={loading || isSyncingAll}>
+												{isSyncingAll ? 'Syncing...' : 'Sync from collection'}
+											</button>
+										</DropdownItem>
+									{/if}
+									<DropdownMenu.Separator class="dropdown-separator" />
 								{/if}
 
 								{#if authUserId}
diff --git a/src/lib/components/sidebar/SearchContent.svelte b/src/lib/components/sidebar/SearchContent.svelte
index 73ed22b5..8303aec1 100644
--- a/src/lib/components/sidebar/SearchContent.svelte
+++ b/src/lib/components/sidebar/SearchContent.svelte
@@ -151,7 +151,8 @@
 		}
 	})
 
-	// Collection query - only enabled when in collection mode and authUserId is provided
+	// Collection query - enabled when authUserId is provided
+	// Used both for collection mode AND for highlighting owned items in "all" mode
 	// Type assertion needed because different types have different query result types
 	// but they all share the same structure with different content types
 	const collectionQueryResult = createInfiniteQuery(() => {
@@ -163,26 +164,27 @@
 			} as ReturnType<typeof collectionQueries.characters>
 		}
 
-		const currentFilters = {
+		// For collection mode, apply filters; for "all" mode, fetch all to build owned set
+		const currentFilters = searchMode === 'collection' ? {
 			element: elementFilters.length > 0 ? elementFilters : undefined,
 			rarity: rarityFilters.length > 0 ? rarityFilters : undefined
-		}
+		} : {}
 
 		switch (type) {
 			case 'weapon':
 				return {
 					...collectionQueries.weapons(authUserId, currentFilters),
-					enabled: searchMode === 'collection'
+					enabled: true // Always enabled when authUserId exists
 				} as unknown as ReturnType<typeof collectionQueries.characters>
 			case 'character':
 				return {
 					...collectionQueries.characters(authUserId, currentFilters),
-					enabled: searchMode === 'collection'
+					enabled: true
 				}
 			case 'summon':
 				return {
 					...collectionQueries.summons(authUserId, currentFilters),
-					enabled: searchMode === 'collection'
+					enabled: true
 				} as unknown as ReturnType<typeof collectionQueries.characters>
 		}
 	})
@@ -199,6 +201,25 @@
 		return filterCollectionByQuery(allItems, debouncedSearchQuery)
 	})
 
+	// Set of owned item granblue IDs for fast lookup (used in "all" mode to highlight owned items)
+	const ownedItemIds = $derived.by(() => {
+		const pages = collectionQueryResult.data?.pages ?? []
+		const allItems = pages.flatMap((page) => page.results)
+		const ids = new Set<string>()
+		for (const item of allItems) {
+			const entity = 'character' in item ? item.character : 'weapon' in item ? item.weapon : item.summon
+			if (entity.granblueId) {
+				ids.add(String(entity.granblueId))
+			}
+		}
+		return ids
+	})
+
+	// Helper to check if an item is owned (in user's collection)
+	function isOwned(item: AddItemResult): boolean {
+		return ownedItemIds.has(String(item.granblueId))
+	}
+
 	// Deduplicate by id - needed because the API may return the same item across pages
 	// (e.g., due to items being added/removed between page fetches)
 	const searchResults = $derived.by<AddItemResult[]>(() => {
@@ -404,11 +425,13 @@
 		{:else if searchResults.length > 0}
 			<ul class="results-list">
 				{#each searchResults as item (item.id)}
+					{@const owned = searchMode === 'all' && authUserId && isOwned(item)}
 					<li class="result-item">
 						<button
 							class="result-button"
 							class:disabled={!canAddMore}
 							class:from-collection={item.collectionId}
+							class:owned={owned}
 							onclick={() => handleItemClick(item)}
 							aria-label="{canAddMore ? 'Add' : 'Grid full - cannot add'} {getItemName(item)}"
 							disabled={!canAddMore}
@@ -422,6 +445,8 @@
 							<span class="result-name">{getItemName(item)}</span>
 							{#if item.collectionId}
 								<Icon name="bookmark" size={14} class="collection-indicator" />
+							{:else if owned}
+								<Icon name="check" size={14} class="owned-indicator" />
 							{/if}
 							{#if item.element !== undefined}
 								<span
@@ -680,6 +705,21 @@
 				color: var(--accent-blue);
 				flex-shrink: 0;
 			}
+
+			:global(.owned-indicator) {
+				color: var(--success, #4caf50);
+				flex-shrink: 0;
+				opacity: 0.7;
+			}
+
+			// Subtle highlight for owned items in "all" mode
+			.result-button.owned {
+				background: var(--owned-bg, rgba(76, 175, 80, 0.08));
+
+				&:hover {
+					background: var(--owned-bg-hover, rgba(76, 175, 80, 0.15));
+				}
+			}
 		}
 
 		.loading {