diff --git a/app/src/components/EffectsTab/EffectsDetail.tsx b/app/src/components/EffectsTab/EffectsDetail.tsx
index 60c2bf7f..07e650ea 100644
--- a/app/src/components/EffectsTab/EffectsDetail.tsx
+++ b/app/src/components/EffectsTab/EffectsDetail.tsx
@@ -1,6 +1,7 @@
 import { useQuery, useQueryClient } from '@tanstack/react-query';
 import { Loader2, Play, Save, Trash2, Wand2 } from 'lucide-react';
 import { useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 
 import { EffectsChainEditor } from '@/components/Effects/EffectsChainEditor';
 import { GenerationPicker } from '@/components/Effects/GenerationPicker';
@@ -25,6 +26,7 @@ import { useEffectsStore } from '@/stores/effectsStore';
 import { usePlayerStore } from '@/stores/playerStore';
 
 export function EffectsDetail() {
+  const { t } = useTranslation();
   const selectedPresetId = useEffectsStore((s) => s.selectedPresetId);
   const isCreatingNew = useEffectsStore((s) => s.isCreatingNew);
   const workingChain = useEffectsStore((s) => s.workingChain);
@@ -115,8 +117,8 @@ export function EffectsDetail() {
       setAudioWithAutoPlay(url, `preview-${Date.now()}`, null, 'Effects Preview');
     } catch (error) {
       toast({
-        title: 'Preview failed',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.previewFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -130,7 +132,7 @@ export function EffectsDetail() {
 
   async function handleSaveNew() {
     if (!name.trim()) {
-      toast({ title: 'Name required', variant: 'destructive' });
+      toast({ title: t('effects.toast.nameRequired'), variant: 'destructive' });
       return;
     }
     setSaving(true);
@@ -143,11 +145,14 @@ export function EffectsDetail() {
       queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
       setIsCreatingNew(false);
       setSelectedPresetId(created.id);
-      toast({ title: 'Preset saved', description: `"${created.name}" has been created.` });
+      toast({
+        title: t('effects.toast.saved'),
+        description: t('effects.toast.createdDescription', { name: created.name }),
+      });
     } catch (error) {
       toast({
-        title: 'Failed to save',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.saveFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -166,11 +171,11 @@ export function EffectsDetail() {
       });
       queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
       queryClient.invalidateQueries({ queryKey: ['effect-preset', selectedPresetId] });
-      toast({ title: 'Preset updated' });
+      toast({ title: t('effects.toast.updated') });
     } catch (error) {
       toast({
-        title: 'Failed to save',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.saveFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -179,15 +184,14 @@ export function EffectsDetail() {
   }
 
   function handleSaveAsNew() {
-    // Open the dialog with a suggested name based on the current preset
-    setSaveAsName(`${name} (Copy)`);
+    setSaveAsName(t('effects.saveAs.suggestedName', { name }));
     setSaveAsDescription(description);
     setSaveAsDialogOpen(true);
   }
 
   async function handleSaveAsConfirm() {
     if (!saveAsName.trim()) {
-      toast({ title: 'Name required', variant: 'destructive' });
+      toast({ title: t('effects.toast.nameRequired'), variant: 'destructive' });
       return;
     }
     setSaving(true);
@@ -200,11 +204,14 @@ export function EffectsDetail() {
       queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
       setSaveAsDialogOpen(false);
       setSelectedPresetId(created.id);
-      toast({ title: 'Preset saved', description: `"${created.name}" has been created.` });
+      toast({
+        title: t('effects.toast.saved'),
+        description: t('effects.toast.createdDescription', { name: created.name }),
+      });
     } catch (error) {
       toast({
-        title: 'Failed to save',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.saveFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -220,11 +227,11 @@ export function EffectsDetail() {
       queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
       setSelectedPresetId(null);
       setWorkingChain([]);
-      toast({ title: 'Preset deleted' });
+      toast({ title: t('effects.toast.deleted') });
     } catch (error) {
       toast({
-        title: 'Failed to delete',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.deleteFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -237,7 +244,7 @@ export function EffectsDetail() {
       <div className="flex-1 flex items-center justify-center text-muted-foreground">
         <div className="text-center space-y-2">
           <Wand2 className="h-10 w-10 mx-auto opacity-30" />
-          <p className="text-sm">Select a preset or create a new one</p>
+          <p className="text-sm">{t('effects.placeholder')}</p>
         </div>
       </div>
     );
@@ -245,10 +252,13 @@ export function EffectsDetail() {
 
   return (
     <div className="flex flex-col h-full min-h-0">
-      {/* Header */}
       <div className="flex items-center justify-between mb-4">
         <h2 className="text-lg font-semibold">
-          {isCreatingNew ? 'New Preset' : isBuiltIn ? preset?.name : 'Edit Preset'}
+          {isCreatingNew
+            ? t('effects.detail.newTitle')
+            : isBuiltIn
+              ? preset?.name
+              : t('effects.detail.editTitle')}
         </h2>
         <div className="flex items-center gap-2">
           {!isBuiltIn && !isCreatingNew && (
@@ -261,7 +271,7 @@ export function EffectsDetail() {
                 disabled={deleting}
               >
                 <Trash2 className="h-3.5 w-3.5" />
-                {deleting ? 'Deleting...' : 'Delete'}
+                {deleting ? t('effects.detail.deleting') : t('common.delete')}
               </Button>
               <Button
                 size="sm"
@@ -270,7 +280,7 @@ export function EffectsDetail() {
                 disabled={saving || workingChain.length === 0}
               >
                 <Save className="h-3.5 w-3.5" />
-                {saving ? 'Saving...' : 'Save'}
+                {saving ? t('effects.detail.saving') : t('common.save')}
               </Button>
             </>
           )}
@@ -282,7 +292,7 @@ export function EffectsDetail() {
               disabled={saving || workingChain.length === 0}
             >
               <Save className="h-3.5 w-3.5" />
-              {saving ? 'Saving...' : 'Save Preset'}
+              {saving ? t('effects.detail.saving') : t('effects.detail.savePreset')}
             </Button>
           )}
           {isBuiltIn && (
@@ -294,51 +304,46 @@ export function EffectsDetail() {
               disabled={saving}
             >
               <Save className="h-3.5 w-3.5" />
-              {saving ? 'Saving...' : 'Save as Custom'}
+              {saving ? t('effects.detail.saving') : t('effects.detail.saveAsCustom')}
             </Button>
           )}
         </div>
       </div>
 
-      {/* Scrollable content */}
       <div className="flex-1 min-h-0 overflow-y-auto space-y-5 pr-1">
-        {/* Name & description */}
         {(isCreatingNew || !isBuiltIn) && (
           <div className="space-y-3">
             <div className="space-y-1.5">
-              <Label className="text-xs">Name</Label>
+              <Label className="text-xs">{t('effects.fields.name')}</Label>
               <Input
                 value={name}
                 onChange={(e) => setName(e.target.value)}
-                placeholder="My preset..."
+                placeholder={t('effects.fields.namePlaceholder')}
                 className="h-9"
               />
             </div>
             <div className="space-y-1.5">
-              <Label className="text-xs">Description</Label>
+              <Label className="text-xs">{t('effects.fields.description')}</Label>
               <Textarea
                 value={description}
                 onChange={(e) => setDescription(e.target.value)}
-                placeholder="Describe what this preset does..."
+                placeholder={t('effects.fields.descriptionPlaceholder')}
                 className="min-h-[60px] resize-none"
               />
             </div>
           </div>
         )}
 
-        {/* Built-in description (read-only) */}
         {isBuiltIn && preset?.description && (
           <p className="text-sm text-muted-foreground">{preset.description}</p>
         )}
 
-        {/* Effects chain editor */}
         <EffectsChainEditor value={workingChain} onChange={setWorkingChain} showPresets={false} />
 
         <Separator />
 
-        {/* Preview section */}
         <div className="space-y-3">
-          <Label className="text-xs">Preview</Label>
+          <Label className="text-xs">{t('effects.preview.label')}</Label>
           <div className="flex items-center gap-2">
             <GenerationPicker
               selectedId={previewGenId}
@@ -355,38 +360,33 @@ export function EffectsDetail() {
               {previewLoading ? (
                 <>
                   <Loader2 className="h-3.5 w-3.5 animate-spin" />
-                  Processing...
+                  {t('effects.preview.processing')}
                 </>
               ) : (
                 <>
                   <Play className="h-3.5 w-3.5" />
-                  Preview
+                  {t('effects.preview.button')}
                 </>
               )}
             </Button>
           </div>
-          <p className="text-[11px] text-muted-foreground">
-            Preview applies effects to the clean version without saving.
-          </p>
+          <p className="text-[11px] text-muted-foreground">{t('effects.preview.hint')}</p>
         </div>
       </div>
 
-      {/* Save as Custom dialog */}
       <Dialog open={saveAsDialogOpen} onOpenChange={setSaveAsDialogOpen}>
         <DialogContent className="sm:max-w-md">
           <DialogHeader>
-            <DialogTitle>Save as Custom Preset</DialogTitle>
-            <DialogDescription>
-              Create a new custom preset based on the current effects chain.
-            </DialogDescription>
+            <DialogTitle>{t('effects.saveAs.title')}</DialogTitle>
+            <DialogDescription>{t('effects.saveAs.description')}</DialogDescription>
           </DialogHeader>
           <div className="space-y-3 py-2">
             <div className="space-y-1.5">
-              <Label className="text-xs">Name</Label>
+              <Label className="text-xs">{t('effects.fields.name')}</Label>
               <Input
                 value={saveAsName}
                 onChange={(e) => setSaveAsName(e.target.value)}
-                placeholder="My preset..."
+                placeholder={t('effects.fields.namePlaceholder')}
                 className="h-9"
                 autoFocus
                 onKeyDown={(e) => {
@@ -397,22 +397,22 @@ export function EffectsDetail() {
               />
             </div>
             <div className="space-y-1.5">
-              <Label className="text-xs">Description</Label>
+              <Label className="text-xs">{t('effects.fields.description')}</Label>
               <Textarea
                 value={saveAsDescription}
                 onChange={(e) => setSaveAsDescription(e.target.value)}
-                placeholder="Describe what this preset does..."
+                placeholder={t('effects.fields.descriptionPlaceholder')}
                 className="min-h-[60px] resize-none"
               />
             </div>
           </div>
           <DialogFooter>
             <Button variant="outline" onClick={() => setSaveAsDialogOpen(false)} disabled={saving}>
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button onClick={handleSaveAsConfirm} disabled={saving || !saveAsName.trim()}>
               <Save className="h-3.5 w-3.5 mr-1.5" />
-              {saving ? 'Saving...' : 'Save'}
+              {saving ? t('effects.detail.saving') : t('common.save')}
             </Button>
           </DialogFooter>
         </DialogContent>
diff --git a/app/src/components/EffectsTab/EffectsList.tsx b/app/src/components/EffectsTab/EffectsList.tsx
index 4ee191bb..8caf9380 100644
--- a/app/src/components/EffectsTab/EffectsList.tsx
+++ b/app/src/components/EffectsTab/EffectsList.tsx
@@ -1,5 +1,6 @@
 import { useQuery } from '@tanstack/react-query';
 import { Loader2, Plus, Sparkles, Wand2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { apiClient } from '@/lib/api/client';
 import type { EffectPresetResponse } from '@/lib/api/types';
@@ -7,6 +8,7 @@ import { cn } from '@/lib/utils/cn';
 import { useEffectsStore } from '@/stores/effectsStore';
 
 export function EffectsList() {
+  const { t } = useTranslation();
   const selectedPresetId = useEffectsStore((s) => s.selectedPresetId);
   const setSelectedPresetId = useEffectsStore((s) => s.setSelectedPresetId);
   const setWorkingChain = useEffectsStore((s) => s.setWorkingChain);
@@ -44,10 +46,10 @@ export function EffectsList() {
     <div className="flex flex-col h-full min-h-0">
       {/* Header */}
       <div className="flex items-center justify-between mb-4">
-        <h2 className="text-lg font-semibold">Effects</h2>
+        <h2 className="text-lg font-semibold">{t('effects.title')}</h2>
         <Button variant="outline" size="sm" className="h-8 gap-1.5" onClick={handleCreateNew}>
           <Plus className="h-3.5 w-3.5" />
-          New Preset
+          {t('effects.newPreset')}
         </Button>
       </div>
 
@@ -57,7 +59,7 @@ export function EffectsList() {
         {builtIn.length > 0 && (
           <div>
             <div className="text-[11px] text-muted-foreground font-medium uppercase tracking-wider mb-2 px-1">
-              Built-in
+              {t('effects.sections.builtin')}
             </div>
             <div className="space-y-1.5">
               {builtIn.map((preset) => (
@@ -76,7 +78,7 @@ export function EffectsList() {
         {userPresets.length > 0 && (
           <div>
             <div className="text-[11px] text-muted-foreground font-medium uppercase tracking-wider mb-2 px-1">
-              Custom
+              {t('effects.sections.custom')}
             </div>
             <div className="space-y-1.5">
               {userPresets.map((preset) => (
@@ -95,16 +97,14 @@ export function EffectsList() {
         {isCreatingNew && (
           <div>
             <div className="text-[11px] text-muted-foreground font-medium uppercase tracking-wider mb-2 px-1">
-              New
+              {t('effects.sections.new')}
             </div>
             <div className="rounded-xl border-2 border-accent/40 bg-accent/5 p-3">
               <div className="flex items-center gap-2">
                 <Sparkles className="h-4 w-4 text-accent" />
-                <span className="text-sm font-medium">Unsaved Preset</span>
+                <span className="text-sm font-medium">{t('effects.unsaved.title')}</span>
               </div>
-              <p className="text-xs text-muted-foreground mt-1">
-                Configure effects in the panel on the right.
-              </p>
+              <p className="text-xs text-muted-foreground mt-1">{t('effects.unsaved.hint')}</p>
             </div>
           </div>
         )}
@@ -122,6 +122,7 @@ function PresetCard({
   isSelected: boolean;
   onSelect: () => void;
 }) {
+  const { t } = useTranslation();
   const effectCount = preset.effects_chain.length;
 
   return (
@@ -142,16 +143,16 @@ function PresetCard({
         <span className="text-sm font-medium truncate">{preset.name}</span>
         {preset.is_builtin && (
           <span className="text-[10px] bg-muted text-muted-foreground px-1.5 py-0.5 rounded-full shrink-0">
-            built-in
+            {t('effects.badge.builtin')}
           </span>
         )}
       </div>
       <p className="text-xs text-muted-foreground mt-1 line-clamp-1 pl-6">
-        {preset.description || 'No description'}
+        {preset.description || t('effects.noDescription')}
       </p>
       <div className="flex items-center gap-2 mt-1.5 pl-6">
         <span className="text-[10px] text-muted-foreground">
-          {effectCount} effect{effectCount !== 1 ? 's' : ''}
+          {t('effects.effectCount', { count: effectCount })}
         </span>
         <span className="text-[10px] text-muted-foreground/50">
           {preset.effects_chain
diff --git a/app/src/i18n/locales/en/translation.json b/app/src/i18n/locales/en/translation.json
index 53e89764..c86e351a 100644
--- a/app/src/i18n/locales/en/translation.json
+++ b/app/src/i18n/locales/en/translation.json
@@ -37,6 +37,61 @@
       "deleting": "Deleting…"
     }
   },
+  "effects": {
+    "title": "Effects",
+    "newPreset": "New Preset",
+    "noDescription": "No description",
+    "placeholder": "Select a preset or create a new one",
+    "effectCount_one": "{{count}} effect",
+    "effectCount_other": "{{count}} effects",
+    "sections": {
+      "builtin": "Built-in",
+      "custom": "Custom",
+      "new": "New"
+    },
+    "badge": {
+      "builtin": "built-in"
+    },
+    "unsaved": {
+      "title": "Unsaved Preset",
+      "hint": "Configure effects in the panel on the right."
+    },
+    "detail": {
+      "newTitle": "New Preset",
+      "editTitle": "Edit Preset",
+      "savePreset": "Save Preset",
+      "saveAsCustom": "Save as Custom",
+      "saving": "Saving…",
+      "deleting": "Deleting…"
+    },
+    "fields": {
+      "name": "Name",
+      "namePlaceholder": "My preset…",
+      "description": "Description",
+      "descriptionPlaceholder": "Describe what this preset does…"
+    },
+    "preview": {
+      "label": "Preview",
+      "button": "Preview",
+      "processing": "Processing…",
+      "hint": "Preview applies effects to the clean version without saving."
+    },
+    "saveAs": {
+      "title": "Save as Custom Preset",
+      "description": "Create a new custom preset based on the current effects chain.",
+      "suggestedName": "{{name}} (Copy)"
+    },
+    "toast": {
+      "saved": "Preset saved",
+      "createdDescription": "\"{{name}}\" has been created.",
+      "updated": "Preset updated",
+      "deleted": "Preset deleted",
+      "saveFailed": "Failed to save",
+      "deleteFailed": "Failed to delete",
+      "previewFailed": "Preview failed",
+      "nameRequired": "Name required"
+    }
+  },
   "stories": {
     "title": "Stories",
     "newStory": "New Story",
diff --git a/app/src/i18n/locales/zh-CN/translation.json b/app/src/i18n/locales/zh-CN/translation.json
index d1ce7eac..1d28ad8b 100644
--- a/app/src/i18n/locales/zh-CN/translation.json
+++ b/app/src/i18n/locales/zh-CN/translation.json
@@ -37,6 +37,61 @@
       "deleting": "删除中…"
     }
   },
+  "effects": {
+    "title": "效果",
+    "newPreset": "新建预设",
+    "noDescription": "无描述",
+    "placeholder": "选择一个预设或创建新的",
+    "effectCount_one": "{{count}} 个效果",
+    "effectCount_other": "{{count}} 个效果",
+    "sections": {
+      "builtin": "内置",
+      "custom": "自定义",
+      "new": "新建"
+    },
+    "badge": {
+      "builtin": "内置"
+    },
+    "unsaved": {
+      "title": "未保存的预设",
+      "hint": "在右侧面板配置效果。"
+    },
+    "detail": {
+      "newTitle": "新建预设",
+      "editTitle": "编辑预设",
+      "savePreset": "保存预设",
+      "saveAsCustom": "另存为自定义",
+      "saving": "保存中…",
+      "deleting": "删除中…"
+    },
+    "fields": {
+      "name": "名称",
+      "namePlaceholder": "我的预设……",
+      "description": "描述",
+      "descriptionPlaceholder": "描述此预设的作用……"
+    },
+    "preview": {
+      "label": "预览",
+      "button": "预览",
+      "processing": "处理中…",
+      "hint": "预览仅将效果应用于干净版本,不会保存。"
+    },
+    "saveAs": {
+      "title": "另存为自定义预设",
+      "description": "基于当前效果链创建一个新的自定义预设。",
+      "suggestedName": "{{name}}(副本)"
+    },
+    "toast": {
+      "saved": "预设已保存",
+      "createdDescription": "\"{{name}}\" 已创建。",
+      "updated": "预设已更新",
+      "deleted": "预设已删除",
+      "saveFailed": "保存失败",
+      "deleteFailed": "删除失败",
+      "previewFailed": "预览失败",
+      "nameRequired": "请输入名称"
+    }
+  },
   "stories": {
     "title": "故事",
     "newStory": "新建故事",