diff --git a/src/entities/Font/api/proxy/proxyFonts.ts b/src/entities/Font/api/proxy/proxyFonts.ts
index 7852008..96f8a45 100644
--- a/src/entities/Font/api/proxy/proxyFonts.ts
+++ b/src/entities/Font/api/proxy/proxyFonts.ts
@@ -7,8 +7,6 @@
  * Proxy API normalizes font data from Google Fonts and Fontshare into a single
  * unified format, eliminating the need for client-side normalization.
  *
- * Fallback: If proxy API fails, falls back to Fontshare API for development.
- *
  * @see https://api.glyphdiff.com/api/v1/fonts
  */
 
@@ -26,40 +24,37 @@ import type {
  */
 const PROXY_API_URL = 'https://api.glyphdiff.com/api/v1/fonts' as const;
 
-/**
- * Whether to use proxy API (true) or fallback (false)
- *
- * Set to true when your proxy API is ready:
- *   const USE_PROXY_API = true;
- *
- * Set to false to use Fontshare API as fallback during development:
- *   const USE_PROXY_API = false;
- *
- * The app will automatically fall back to Fontshare API if the proxy fails.
- */
-const USE_PROXY_API = true;
-
 /**
  * Proxy API parameters
  *
  * Maps directly to the proxy API query parameters
+ *
+ * UPDATED: Now supports array values for filters
  */
 export interface ProxyFontsParams extends QueryParams {
     /**
-     * Font provider filter ("google" or "fontshare")
-     * Omit to fetch from both providers
+     * Font provider filter
+     *
+     * NEW: Supports array of providers (e.g., ["google", "fontshare"])
+     * Backward compatible: Single value still works
      */
-    provider?: 'google' | 'fontshare';
+    providers?: string[] | string;
 
     /**
      * Font category filter
+     *
+     * NEW: Supports array of categories (e.g., ["serif", "sans-serif"])
+     * Backward compatible: Single value still works
      */
-    category?: FontCategory;
+    categories?: string[] | string;
 
     /**
      * Character subset filter
+     *
+     * NEW: Supports array of subsets (e.g., ["latin", "cyrillic"])
+     * Backward compatible: Single value still works
      */
-    subset?: FontSubset;
+    subsets?: string[] | string;
 
     /**
      * Search query (e.g., "roboto", "satoshi")
@@ -108,8 +103,6 @@ export interface ProxyFontsResponse {
 /**
  * Fetch fonts from proxy API
  *
- * If proxy API fails or is unavailable, falls back to Fontshare API for development.
- *
  * @param params - Query parameters for filtering and pagination
  * @returns Promise resolving to proxy API response
  * @throws ApiError when request fails
@@ -138,84 +131,16 @@ export interface ProxyFontsResponse {
 export async function fetchProxyFonts(
     params: ProxyFontsParams = {},
 ): Promise<ProxyFontsResponse> {
-    // Try proxy API first if enabled
-    if (USE_PROXY_API) {
-        try {
-            const queryString = buildQueryString(params);
-            const url = `${PROXY_API_URL}${queryString}`;
+    const queryString = buildQueryString(params);
+    const url = `${PROXY_API_URL}${queryString}`;
 
-            console.log('[fetchProxyFonts] Fetching from proxy API', { params, url });
+    const response = await api.get<ProxyFontsResponse>(url);
 
-            const response = await api.get<ProxyFontsResponse>(url);
-
-            // Validate response has fonts array
-            if (!response.data || !Array.isArray(response.data.fonts)) {
-                console.error('[fetchProxyFonts] Invalid response from proxy API', response.data);
-                throw new Error('Proxy API returned invalid response');
-            }
-
-            console.log('[fetchProxyFonts] Proxy API success', {
-                count: response.data.fonts.length,
-            });
-            return response.data;
-        } catch (error) {
-            console.warn('[fetchProxyFonts] Proxy API failed, using fallback', error);
-
-            // Check if it's a network error or proxy not available
-            const isNetworkError = error instanceof Error
-                && (error.message.includes('Failed to fetch')
-                    || error.message.includes('Network')
-                    || error.message.includes('404')
-                    || error.message.includes('500'));
-
-            if (isNetworkError) {
-                // Fall back to Fontshare API
-                console.log('[fetchProxyFonts] Using Fontshare API as fallback');
-                return await fetchFontshareFallback(params);
-            }
-
-            // Re-throw other errors
-            if (error instanceof Error) {
-                throw error;
-            }
-            throw new Error(`Failed to fetch fonts from proxy API: ${String(error)}`);
-        }
+    if (!response.data || !Array.isArray(response.data.fonts)) {
+        throw new Error('Proxy API returned invalid response');
     }
 
-    // Use Fontshare API directly
-    console.log('[fetchProxyFonts] Using Fontshare API (proxy disabled)');
-    return await fetchFontshareFallback(params);
-}
-
-/**
- * Fallback to Fontshare API when proxy is unavailable
- *
- * Maps proxy API params to Fontshare API params and normalizes response
- */
-async function fetchFontshareFallback(
-    params: ProxyFontsParams,
-): Promise<ProxyFontsResponse> {
-    // Import dynamically to avoid circular dependency
-    const { fetchFontshareFonts } = await import('$entities/Font/api/fontshare/fontshare');
-    const { normalizeFontshareFonts } = await import('$entities/Font/lib/normalize/normalize');
-
-    // Map proxy params to Fontshare params
-    const fontshareParams = {
-        q: params.q,
-        categories: params.category ? [params.category] : undefined,
-        page: params.offset ? Math.floor(params.offset / (params.limit || 50)) + 1 : undefined,
-        limit: params.limit,
-    };
-
-    const response = await fetchFontshareFonts(fontshareParams);
-    const normalizedFonts = normalizeFontshareFonts(response.fonts);
-
-    return {
-        fonts: normalizedFonts,
-        total: response.count_total,
-        limit: params.limit || response.count,
-        offset: params.offset || 0,
-    };
+    return response.data;
 }
 
 /**
@@ -256,24 +181,9 @@ export async function fetchProxyFontById(
 export async function fetchFontsByIds(ids: string[]): Promise<UnifiedFont[]> {
     if (ids.length === 0) return [];
 
-    // Use proxy API if enabled
-    if (USE_PROXY_API) {
-        const queryString = ids.join(',');
-        const url = `${PROXY_API_URL}/batch?ids=${queryString}`;
+    const queryString = ids.join(',');
+    const url = `${PROXY_API_URL}/batch?ids=${queryString}`;
 
-        try {
-            const response = await api.get<UnifiedFont[]>(url);
-            return response.data ?? [];
-        } catch (error) {
-            console.warn('[fetchFontsByIds] Proxy API batch fetch failed, falling back', error);
-            // Fallthrough to fallback
-        }
-    }
-
-    // Fallback: Fetch individually (not efficient but functional for fallback)
-    const results = await Promise.all(
-        ids.map(id => fetchProxyFontById(id)),
-    );
-
-    return results.filter((f): f is UnifiedFont => !!f);
+    const response = await api.get<UnifiedFont[]>(url);
+    return response.data ?? [];
 }
diff --git a/src/features/GetFonts/lib/mapper/mapManagerToParams.ts b/src/features/GetFonts/lib/mapper/mapManagerToParams.ts
index 8375a10..c016683 100644
--- a/src/features/GetFonts/lib/mapper/mapManagerToParams.ts
+++ b/src/features/GetFonts/lib/mapper/mapManagerToParams.ts
@@ -4,8 +4,7 @@ import type { FilterManager } from '../filterManager/filterManager.svelte';
 /**
  * Maps filter manager to proxy API parameters.
  *
- * Transforms UI filter state into proxy API query parameters.
- * Handles conversion from filter groups to API-specific parameters.
+ * Updated to support multiple filter values (arrays)
  *
  * @param manager - Filter manager instance with reactive state
  * @returns - Partial proxy API parameters ready for API call
@@ -15,13 +14,18 @@ import type { FilterManager } from '../filterManager/filterManager.svelte';
  * // Example filter manager state:
  * // {
  * //   queryValue: 'roboto',
- * //   providers: ['google'],
- * //   categories: ['sans-serif'],
+ * //   providers: ['google', 'fontshare'],
+ * //   categories: ['sans-serif', 'serif'],
  * //   subsets: ['latin']
  * // }
  *
  * const params = mapManagerToParams(manager);
- * // Returns: { provider: 'google', category: 'sans-serif', subset: 'latin', q: 'roboto' }
+ * // Returns: {
+ * //   providers: ['google', 'fontshare'],
+ * //   categories: ['sans-serif', 'serif'],
+ * //   subsets: ['latin'],
+ * //   q: 'roboto'
+ * // }
  * ```
  */
 export function mapManagerToParams(manager: FilterManager): Partial<ProxyFontsParams> {
@@ -33,22 +37,17 @@ export function mapManagerToParams(manager: FilterManager): Partial<ProxyFontsPa
         // Search query (debounced)
         q: manager.debouncedQueryValue || undefined,
 
-        // Provider filter (single value - proxy API doesn't support array)
-        // Use first provider if multiple selected, or undefined if none/all selected
-        provider: providers && providers.length === 1
-            ? (providers[0] as 'google' | 'fontshare')
+        // NEW: Support arrays - send all selected values
+        providers: providers && providers.length > 0
+            ? providers as string[]
             : undefined,
 
-        // Category filter (single value - proxy API doesn't support array)
-        // Use first category if multiple selected, or undefined if none/all selected
-        category: categories && categories.length === 1
-            ? (categories[0] as ProxyFontsParams['category'])
+        categories: categories && categories.length > 0
+            ? categories as string[]
             : undefined,
 
-        // Subset filter (single value - proxy API doesn't support array)
-        // Use first subset if multiple selected, or undefined if none/all selected
-        subset: subsets && subsets.length === 1
-            ? (subsets[0] as ProxyFontsParams['subset'])
+        subsets: subsets && subsets.length > 0
+            ? subsets as string[]
             : undefined,
     };
 }
diff --git a/src/features/GetFonts/model/state/manager.svelte.ts b/src/features/GetFonts/model/state/manager.svelte.ts
index 3ec8d8a..f17057d 100644
--- a/src/features/GetFonts/model/state/manager.svelte.ts
+++ b/src/features/GetFonts/model/state/manager.svelte.ts
@@ -4,26 +4,58 @@ import {
     FONT_PROVIDERS,
     FONT_SUBSETS,
 } from '../const/const';
+import { filtersStore } from './filters.svelte';
 
-const initialConfig = {
-    queryValue: '',
-    groups: [
-        {
-            id: 'providers',
-            label: 'Font provider',
-            properties: FONT_PROVIDERS,
-        },
-        {
-            id: 'subsets',
-            label: 'Font subset',
-            properties: FONT_SUBSETS,
-        },
-        {
-            id: 'categories',
-            label: 'Font category',
-            properties: FONT_CATEGORIES,
-        },
-    ],
-};
+/**
+ * Creates initial filter config
+ *
+ * Uses dynamic filters from backend if available,
+ * otherwise falls back to hard-coded constants
+ */
+function createInitialConfig() {
+    const dynamicFilters = filtersStore.filters;
+
+    // If filters are loaded, use them
+    if (dynamicFilters.length > 0) {
+        return {
+            queryValue: '',
+            groups: dynamicFilters.map(filter => ({
+                id: filter.id,
+                label: filter.name,
+                properties: filter.options.map(opt => ({
+                    id: opt.id,
+                    name: opt.name,
+                    value: opt.value,
+                    count: opt.count,
+                    selected: false,
+                })),
+            })),
+        };
+    }
+
+    // Fallback to hard-coded constants (backward compatibility)
+    return {
+        queryValue: '',
+        groups: [
+            {
+                id: 'providers',
+                label: 'Font provider',
+                properties: FONT_PROVIDERS,
+            },
+            {
+                id: 'subsets',
+                label: 'Font subset',
+                properties: FONT_SUBSETS,
+            },
+            {
+                id: 'categories',
+                label: 'Font category',
+                properties: FONT_CATEGORIES,
+            },
+        ],
+    };
+}
+
+const initialConfig = createInitialConfig();
 
 export const filterManager = createFilterManager(initialConfig);