diff --git a/backend/open_webui/routers/knowledge.py b/backend/open_webui/routers/knowledge.py
index 6d7ac4e9f2..b7a5772c1d 100644
--- a/backend/open_webui/routers/knowledge.py
+++ b/backend/open_webui/routers/knowledge.py
@@ -2126,18 +2126,13 @@ async def export_knowledge_by_id(id: str, user=Depends(get_admin_user), db: Asyn
     zip_buffer.seek(0)
 
     # Sanitize knowledge name for filename
-    # ASCII-safe fallback for the basic filename parameter (latin-1 safe)
-    safe_name = ''.join(c if c.isascii() and (c.isalnum() or c in ' -_') else '_' for c in knowledge.name)
+    safe_name = ''.join(c if c.isalnum() or c in ' -_' else '_' for c in knowledge.name)
     zip_filename = f'{safe_name}.zip'
 
-    # Use RFC 5987 filename* for non-ASCII names so the browser gets the real name
-    quoted_name = quote(f'{knowledge.name}.zip')
-    content_disposition = f'attachment; filename="{zip_filename}"; filename*=UTF-8\'\'{quoted_name}'
-
     return StreamingResponse(
         zip_buffer,
         media_type='application/zip',
-        headers={'Content-Disposition': content_disposition},
+        headers={'Content-Disposition': f"attachment; filename*=UTF-8''{quote(zip_filename, safe='')}"},
     )
 
 
diff --git a/src/lib/components/admin/Settings/Audio.svelte b/src/lib/components/admin/Settings/Audio.svelte
index 271c5b8fa9..cf893a24b0 100644
--- a/src/lib/components/admin/Settings/Audio.svelte
+++ b/src/lib/components/admin/Settings/Audio.svelte
@@ -14,6 +14,7 @@
 
 	import Spinner from '$lib/components/common/Spinner.svelte';
 	import SensitiveInput from '$lib/components/common/SensitiveInput.svelte';
+	import TTSVoiceInput from '$lib/components/workspace/Models/TTSVoiceInput.svelte';
 
 	import { TTS_RESPONSE_SPLIT } from '$lib/types';
 
@@ -58,8 +59,18 @@
 
 	let STT_WHISPER_MODEL_LOADING = false;
 
+	type Voice = {
+		id: string;
+		name?: string;
+		description?: string;
+		meta?: {
+			description?: string;
+		};
+	};
+
 	// eslint-disable-next-line no-undef
 	let voices: SpeechSynthesisVoice[] = [];
+	let providerVoices: Voice[] = [];
 	let models: Awaited<ReturnType<typeof _getModels>>['models'] = [];
 
 	const getModels = async () => {
@@ -82,6 +93,8 @@
 
 	const getVoices = async () => {
 		if (TTS_ENGINE === '') {
+			providerVoices = [];
+
 			const getVoicesLoop = setInterval(() => {
 				voices = speechSynthesis.getVoices();
 
@@ -92,14 +105,18 @@
 				}
 			}, 100);
 		} else {
+			voices = [];
+
 			const res = await _getVoices(localStorage.token).catch((e) => {
 				toast.error(`${e}`);
 			});
 
 			if (res) {
 				console.log(res);
-				voices = res.voices;
-				voices.sort((a, b) => a.name.localeCompare(b.name, $i18n.resolvedLanguage));
+				providerVoices = res.voices ?? [];
+				providerVoices.sort((a, b) =>
+					(a.name ?? a.id).localeCompare(b.name ?? b.id, $i18n.resolvedLanguage)
+				);
 			}
 		}
 	};
@@ -679,18 +696,12 @@
 								<div class=" mb-1.5 text-xs font-medium">{$i18n.t('TTS Voice')}</div>
 								<div class="flex w-full">
 									<div class="flex-1">
-										<input
-											list="voice-list"
-											class="w-full rounded-lg py-2 px-4 text-sm bg-gray-50 dark:text-gray-300 dark:bg-gray-850 outline-hidden"
+										<TTSVoiceInput
 											bind:value={TTS_VOICE}
+											voices={providerVoices}
 											placeholder={$i18n.t('Select a voice')}
+											className="w-full rounded-lg py-2 px-4 bg-gray-50 dark:text-gray-300 dark:bg-gray-850"
 										/>
-
-										<datalist id="voice-list">
-											{#each voices as voice}
-												<option value={voice.id}>{voice.name}</option>
-											{/each}
-										</datalist>
 									</div>
 								</div>
 							</div>
@@ -736,18 +747,12 @@
 								<div class=" mb-1.5 text-xs font-medium">{$i18n.t('TTS Voice')}</div>
 								<div class="flex w-full">
 									<div class="flex-1">
-										<input
-											list="voice-list"
-											class="w-full rounded-lg py-2 px-4 text-sm bg-gray-50 dark:text-gray-300 dark:bg-gray-850 outline-hidden"
+										<TTSVoiceInput
 											bind:value={TTS_VOICE}
+											voices={providerVoices}
 											placeholder={$i18n.t('Select a voice')}
+											className="w-full rounded-lg py-2 px-4 bg-gray-50 dark:text-gray-300 dark:bg-gray-850"
 										/>
-
-										<datalist id="voice-list">
-											{#each voices as voice}
-												<option value={voice.id}>{voice.name}</option>
-											{/each}
-										</datalist>
 									</div>
 								</div>
 							</div>
@@ -777,18 +782,12 @@
 								<div class=" mb-1.5 text-xs font-medium">{$i18n.t('TTS Voice')}</div>
 								<div class="flex w-full">
 									<div class="flex-1">
-										<input
-											list="voice-list"
-											class="w-full rounded-lg py-2 px-4 text-sm bg-gray-50 dark:text-gray-300 dark:bg-gray-850 outline-hidden"
+										<TTSVoiceInput
 											bind:value={TTS_VOICE}
+											voices={providerVoices}
 											placeholder={$i18n.t('Select a voice')}
+											className="w-full rounded-lg py-2 px-4 bg-gray-50 dark:text-gray-300 dark:bg-gray-850"
 										/>
-
-										<datalist id="voice-list">
-											{#each voices as voice}
-												<option value={voice.id}>{voice.name}</option>
-											{/each}
-										</datalist>
 									</div>
 								</div>
 							</div>
@@ -820,18 +819,12 @@
 								<div class=" mb-1.5 text-xs font-medium">{$i18n.t('TTS Voice')}</div>
 								<div class="flex w-full">
 									<div class="flex-1">
-										<input
-											list="voice-list"
-											class="w-full rounded-lg py-2 px-4 text-sm bg-gray-50 dark:text-gray-300 dark:bg-gray-850 outline-hidden"
+										<TTSVoiceInput
 											bind:value={TTS_VOICE}
+											voices={providerVoices}
 											placeholder={$i18n.t('Select a voice')}
+											className="w-full rounded-lg py-2 px-4 bg-gray-50 dark:text-gray-300 dark:bg-gray-850"
 										/>
-
-										<datalist id="voice-list">
-											{#each voices as voice}
-												<option value={voice.id}>{voice.name}</option>
-											{/each}
-										</datalist>
 									</div>
 								</div>
 							</div>