diff --git a/frontend/src/CommunitiesManager.jsx b/frontend/src/CommunitiesManager.jsx
index 4c937d3..1c05a97 100644
--- a/frontend/src/CommunitiesManager.jsx
+++ b/frontend/src/CommunitiesManager.jsx
@@ -11,6 +11,8 @@ import {
   IconFilter,
   IconChartBar,
   IconList,
+  IconLink,
+  IconRefresh,
   IconSortAscending,
   IconSortDescending
 } from '@tabler/icons-react';
@@ -44,6 +46,10 @@ function CommunitiesManager() {
   const [newItem, setNewItem] = useState({ value: '', name: '', description: '', tags: '', gatewayDefault: '', color: '', category: '', priority: 0, enabled: true });
   const [editingValue, setEditingValue] = useState(null);
   const [editingDraft, setEditingDraft] = useState({ value: '', name: '', description: '', tags: '', gatewayDefault: '', color: '', category: '', priority: 0, enabled: true });
+  const [filterUsage, setFilterUsage] = useState({});
+  const [filterUsageLoading, setFilterUsageLoading] = useState(false);
+  const [filterUsageError, setFilterUsageError] = useState('');
+  const [showOnlyUsedInFilters, setShowOnlyUsedInFilters] = useState(false);
   
   // Модальные окна
   const [addModalOpen, setAddModalOpen] = useState(false);
@@ -51,7 +57,24 @@ function CommunitiesManager() {
   const [deleteModalOpen, setDeleteModalOpen] = useState(false);
   const [itemToDelete, setItemToDelete] = useState(null);
 
-  useEffect(() => { fetchItems(); }, []);
+  useEffect(() => { 
+    fetchItems(); 
+    fetchFilterUsage();
+  }, []);
+
+  useEffect(() => {
+    if (!filterUsage) return;
+    setItems((prev) => {
+      const map = new Map(prev.map((i) => [i.value, i]));
+      Object.keys(filterUsage).forEach((value) => {
+        if (!value) return;
+        if (!map.has(value)) {
+          map.set(value, { value, name: '', description: '', tags: [], gatewayDefault: '', color: '', _external: true });
+        }
+      });
+      return Array.from(map.values());
+    });
+  }, [filterUsage]);
 
   const fetchItems = async () => {
     setLoading(true);
@@ -115,6 +138,42 @@ function CommunitiesManager() {
     }
   };
 
+  const fetchFilterUsage = async () => {
+    setFilterUsageLoading(true);
+    setFilterUsageError('');
+    try {
+      const serversRes = await api.get(`/server-configs`);
+      const serversList = Array.isArray(serversRes.data) ? serversRes.data : [];
+      if (!serversList.length) {
+        setFilterUsage({});
+        return;
+      }
+
+      const responses = await Promise.all(
+        serversList.map((server) =>
+          api.get(`/server-filters/${server.id}`).catch(() => ({ data: [] }))
+        )
+      );
+
+      const usageMap = new Map();
+      responses.forEach((res) => {
+        const arr = Array.isArray(res.data) ? res.data : [];
+        arr.forEach((f) => {
+          const value = String(f?.community || '').trim();
+          if (!value) return;
+          usageMap.set(value, (usageMap.get(value) || 0) + 1);
+        });
+      });
+
+      setFilterUsage(Object.fromEntries(usageMap));
+    } catch (e) {
+      console.error('Error fetching filter usage:', e);
+      setFilterUsageError('Не удалось загрузить использование в фильтрах.');
+    } finally {
+      setFilterUsageLoading(false);
+    }
+  };
+
   const saveAll = async (data) => {
     setLoading(true);
     try {
@@ -245,14 +304,16 @@ function CommunitiesManager() {
 
   const filtered = useMemo(() => {
     const q = searchTerm.trim().toLowerCase();
-    if (!q) return sorted;
-    return sorted.filter(i =>
-      (i.value || '').toLowerCase().includes(q) ||
-      (i.name || '').toLowerCase().includes(q) ||
-      (i.description || '').toLowerCase().includes(q) ||
-      (i.tags || []).some(t => (t || '').toLowerCase().includes(q))
-    );
-  }, [sorted, searchTerm]);
+    const searchFiltered = q
+      ? sorted.filter(i =>
+          (i.value || '').toLowerCase().includes(q) ||
+          (i.name || '').toLowerCase().includes(q) ||
+          (i.description || '').toLowerCase().includes(q) ||
+          (i.tags || []).some(t => (t || '').toLowerCase().includes(q))
+        )
+      : sorted;
+    return searchFiltered.filter((i) => !showOnlyUsedInFilters || (filterUsage[i.value] || 0) > 0);
+  }, [sorted, searchTerm, showOnlyUsedInFilters, filterUsage]);
 
   const totalPages = Math.ceil(filtered.length / pageSize) || 1;
   const page = Math.min(currentPage, totalPages);
@@ -375,7 +436,7 @@ function CommunitiesManager() {
                   </div>
                 </div>
                 <div className="card-body">
-                  <div className="d-flex gap-2 flex-wrap mb-3">
+                  <div className="d-flex gap-2 flex-wrap mb-3 align-items-center">
                     <SavedFilters
                       pageKey="communities"
                       currentFilters={{ searchTerm, sortField, sortOrder }}
@@ -407,6 +468,33 @@ function CommunitiesManager() {
                         </button>
                       )}
                     </div>
+                    <div className="d-flex align-items-center gap-3 flex-wrap">
+                      <label className="form-check form-switch mb-0 d-flex align-items-center gap-2">
+                        <input
+                          className="form-check-input"
+                          type="checkbox"
+                          checked={showOnlyUsedInFilters}
+                          onChange={(e) => { setShowOnlyUsedInFilters(e.target.checked); setCurrentPage(1); }}
+                        />
+                        <span className="form-check-label">Только используемые в фильтрах</span>
+                        {filterUsageLoading && (
+                          <span className="spinner-border spinner-border-sm text-primary" role="status" aria-hidden="true"></span>
+                        )}
+                      </label>
+                      <button
+                        className="btn btn-outline-secondary btn-sm"
+                        type="button"
+                        onClick={fetchFilterUsage}
+                        disabled={filterUsageLoading}
+                        title="Обновить использование из /filters"
+                      >
+                        <IconRefresh className="icon me-1" size={16} />
+                        Обновить использование
+                      </button>
+                      {filterUsageError && (
+                        <span className="text-danger small">{filterUsageError}</span>
+                      )}
+                    </div>
                   </div>
                   <div className="table-responsive">
                     <table className="table card-table table-vcenter table-nowrap mb-0">
@@ -437,14 +525,15 @@ function CommunitiesManager() {
                           <th>Описание</th>
                           <th>Теги</th>
                           <th>Gateway</th>
+                          <th style={{ width: '10%' }}>Исп. в фильтрах</th>
                           <th className="text-end">Действия</th>
                         </tr>
                       </thead>
                       <tbody>
                         {loading ? (
-                          <tr><td colSpan={6} className="text-center text-muted py-4">Загрузка...</td></tr>
+                          <tr><td colSpan={7} className="text-center text-muted py-4">Загрузка...</td></tr>
                         ) : paginated.length === 0 ? (
-                          <tr><td colSpan={6} className="text-center text-muted py-4">
+                          <tr><td colSpan={7} className="text-center text-muted py-4">
                             <EmptyState 
                               title="Нет community" 
                               description="Добавьте запись, чтобы начать." 
@@ -456,46 +545,63 @@ function CommunitiesManager() {
                               } 
                             />
                           </td></tr>
-                        ) : paginated.map((item) => (
-                          <tr key={item.value}>
-                            <td>
-                              <code className="text-blue">{item.value}</code>
-                              {item._external && (
-                                <span className="badge bg-yellow-lt text-yellow ms-2" title="Не внесён в справочник">не в справ.</span>
-                              )}
-                            </td>
-                            <td>{item.name || <span className="text-muted">—</span>}</td>
-                            <td>
-                              <span className="text-muted" title={item.description}>{item.description || '—'}</span>
-                            </td>
-                            <td>
-                              {(item.tags || []).map(t => (
-                                <span key={t} className="badge bg-blue-lt text-blue me-1">{t}</span>
-                              ))}
-                            </td>
-                            <td>
-                              <span className="text-muted">{item.gatewayDefault || '—'}</span>
-                            </td>
-                            <td className="text-end">
-                              <div className="btn-list">
-                                <button 
-                                  className="btn btn-outline-primary btn-icon btn-sm" 
-                                  onClick={()=>startEdit(item)}
-                                  title="Редактировать"
-                                >
-                                  <IconEdit size={16} />
-                                </button>
-                                <button 
-                                  className="btn btn-outline-danger btn-icon btn-sm" 
-                                  onClick={()=>handleDeleteClick(item)}
-                                  title="Удалить"
-                                >
-                                  <IconTrash size={16} />
-                                </button>
-                              </div>
-                            </td>
-                          </tr>
-                        ))}
+                        ) : paginated.map((item) => {
+                          const usageCount = filterUsage[item.value] || 0;
+                          return (
+                            <tr key={item.value}>
+                              <td>
+                                <code className="text-blue">{item.value}</code>
+                                {item._external && (
+                                  <span className="badge bg-yellow-lt text-yellow ms-2" title="Не внесён в справочник">не в справ.</span>
+                                )}
+                              </td>
+                              <td>{item.name || <span className="text-muted">—</span>}</td>
+                              <td>
+                                <span className="text-muted" title={item.description}>{item.description || '—'}</span>
+                              </td>
+                              <td>
+                                {(item.tags || []).map(t => (
+                                  <span key={t} className="badge bg-blue-lt text-blue me-1">{t}</span>
+                                ))}
+                              </td>
+                              <td>
+                                <span className="text-muted">{item.gatewayDefault || '—'}</span>
+                              </td>
+                              <td>
+                                {usageCount > 0 ? (
+                                  <span className="badge bg-blue-lt text-blue">{usageCount} в фильтрах</span>
+                                ) : (
+                                  <span className="text-muted">0</span>
+                                )}
+                              </td>
+                              <td className="text-end">
+                                <div className="btn-list">
+                                  <a
+                                    className="btn btn-outline-primary btn-icon btn-sm"
+                                    href={`/filters?community=${encodeURIComponent(item.value)}`}
+                                    title="Открыть в /filters с поиском по community"
+                                  >
+                                    <IconLink size={16} />
+                                  </a>
+                                  <button 
+                                    className="btn btn-outline-primary btn-icon btn-sm" 
+                                    onClick={()=>startEdit(item)}
+                                    title="Редактировать"
+                                  >
+                                    <IconEdit size={16} />
+                                  </button>
+                                  <button 
+                                    className="btn btn-outline-danger btn-icon btn-sm" 
+                                    onClick={()=>handleDeleteClick(item)}
+                                    title="Удалить"
+                                  >
+                                    <IconTrash size={16} />
+                                  </button>
+                                </div>
+                              </td>
+                            </tr>
+                          );
+                        })}
                       </tbody>
                     </table>
                   </div>
diff --git a/frontend/src/FilterManager.jsx b/frontend/src/FilterManager.jsx
index fd9e955..d5f0c5c 100644
--- a/frontend/src/FilterManager.jsx
+++ b/frontend/src/FilterManager.jsx
@@ -69,6 +69,15 @@ function FilterManager() {
   const [filterSearch, setFilterSearch] = useState('');
   const [sortBy, setSortBy] = useState('community'); // community | gateway | description
   const [sortDir, setSortDir] = useState('asc'); // asc | desc
+
+  // Префилл поиска из query-параметра ?community=...
+  useEffect(() => {
+    const params = new URLSearchParams(window.location.search);
+    const communityFromQuery = params.get('community');
+    if (communityFromQuery) {
+      setFilterSearch(communityFromQuery);
+    }
+  }, []);
   
   // Состояние управления серверами
   const [serverListModalOpen, setServerListModalOpen] = useState(false);