diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd8165c..e4cd703 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -39,6 +39,15 @@ e este projeto adere ao [Semantic Versioning](https://semver.org/lang/pt-BR/).
   - Melhor performance em navegação
 
 ### Modificado
+- Otimização global de imagens
+  - Conversão automática para WebP
+  - Redimensionamento otimizado por contexto
+  - Parâmetros de qualidade personalizados
+  - Função utilitária centralizada
+  - Implementação em todas as rotas
+  - Otimização contextual por uso
+  - Pré-carregamento otimizado
+
 - Otimização de imagens de capa
   - Uso da primeira página como capa
   - Tamanho reduzido para thumbnails
@@ -69,7 +78,7 @@ e este projeto adere ao [Semantic Versioning](https://semver.org/lang/pt-BR/).
 - Melhor tratamento de estados de loading e erro
 - Implementação de componente ImageWithLoading
 - Sistema de cache de imagens
-- Otimização de URLs de imagem
+- Otimiza�o de URLs de imagem
 
 - Refatoração de componentes para melhor reuso
   - Separação de lógica de carregamento de imagens
diff --git a/src/lib/imageUtils.ts b/src/lib/imageUtils.ts
new file mode 100644
index 0000000..89bca49
--- /dev/null
+++ b/src/lib/imageUtils.ts
@@ -0,0 +1,30 @@
+interface ImageOptions {
+  width?: number;
+  height?: number;
+  quality?: number;
+}
+
+export function getOptimizedImageUrl(url: string, options: ImageOptions = {}): string {
+  const {
+    width = 800,
+    height = undefined,
+    quality = 80
+  } = options;
+
+  // Se for URL do Supabase Storage
+  if (url.includes('storage.googleapis.com')) {
+    const params = new URLSearchParams({
+      width: width.toString(),
+      quality: quality.toString(),
+      format: 'webp'
+    });
+
+    if (height) {
+      params.append('height', height.toString());
+    }
+
+    return `${url}?${params.toString()}`;
+  }
+
+  return url;
+} 
\ No newline at end of file
diff --git a/src/pages/student-dashboard/StoryPage.tsx b/src/pages/student-dashboard/StoryPage.tsx
index 704bddf..de05ebc 100644
--- a/src/pages/student-dashboard/StoryPage.tsx
+++ b/src/pages/student-dashboard/StoryPage.tsx
@@ -6,6 +6,7 @@ import { AudioRecorder } from '../../components/story/AudioRecorder';
 import type { Story } from '../../types/database';
 import { StoryMetrics } from '../../components/story/StoryMetrics';
 import type { MetricsData } from '../../components/story/StoryMetrics';
+import { getOptimizedImageUrl } from '../../lib/imageUtils';
 
 interface StoryRecording {
   id: string;
@@ -304,7 +305,10 @@ export function StoryPage() {
     const nextImageUrl = story?.content?.pages?.[currentPage + 1]?.image;
     if (nextImageUrl) {
       const nextImage = new Image();
-      nextImage.src = nextImageUrl;
+      nextImage.src = getOptimizedImageUrl(nextImageUrl, {
+        width: 1200,
+        quality: 85
+      });
     }
   }, [currentPage, story]);
 
@@ -398,7 +402,10 @@ export function StoryPage() {
         {/* Imagem da página atual */}
         {story?.content?.pages?.[currentPage]?.image && (
           <ImageWithLoading
-            src={story.content.pages[currentPage].image}
+            src={getOptimizedImageUrl(story.content.pages[currentPage].image, {
+              width: 1200,
+              quality: 85
+            })}
             alt={`Página ${currentPage + 1}`}
             className="w-full h-full object-cover"
           />
diff --git a/src/pages/student-dashboard/StudentDashboardPage.tsx b/src/pages/student-dashboard/StudentDashboardPage.tsx
index c7fc7ec..da05e8b 100644
--- a/src/pages/student-dashboard/StudentDashboardPage.tsx
+++ b/src/pages/student-dashboard/StudentDashboardPage.tsx
@@ -3,6 +3,7 @@ import { Plus, BookOpen, Clock, TrendingUp, Award } from 'lucide-react';
 import { useNavigate } from 'react-router-dom';
 import { supabase } from '../../lib/supabase';
 import type { Story, Student } from '../../types/database';
+import { getOptimizedImageUrl } from '../../lib/imageUtils';
 
 interface DashboardMetrics {
   totalStories: number;
@@ -252,7 +253,10 @@ export function StudentDashboardPage() {
                 {story.cover && (
                   <div className="relative aspect-video">
                     <img
-                      src={`${story.cover.image_url}?width=400&quality=80&format=webp`}
+                      src={getOptimizedImageUrl(story.cover.image_url, {
+                        width: 400,
+                        height: 300
+                      })}
                       alt={story.title}
                       className="w-full h-48 object-cover"
                       loading="lazy"
diff --git a/src/pages/student-dashboard/StudentStoriesPage.tsx b/src/pages/student-dashboard/StudentStoriesPage.tsx
index 24cc1f3..8dd47b6 100644
--- a/src/pages/student-dashboard/StudentStoriesPage.tsx
+++ b/src/pages/student-dashboard/StudentStoriesPage.tsx
@@ -3,6 +3,7 @@ import { Plus, Search, Filter, BookOpen, ArrowUpDown } from 'lucide-react';
 import { useNavigate } from 'react-router-dom';
 import { supabase } from '../../lib/supabase';
 import type { Story } from '../../types/database';
+import { getOptimizedImageUrl } from '../../lib/imageUtils';
 
 type StoryStatus = 'all' | 'draft' | 'published';
 type SortOption = 'recent' | 'oldest' | 'title' | 'performance';
@@ -197,10 +198,14 @@ export function StudentStoriesPage() {
                 className="bg-white rounded-xl shadow-sm border border-gray-200 overflow-hidden cursor-pointer hover:shadow-md transition"
                 onClick={() => navigate(`/aluno/historias/${story.id}`)}
               >
-                {story.content?.pages?.[0]?.image && (
+                {story.cover && (
                   <div className="relative aspect-video">
                     <img
-                      src={story.content.pages[0].image}
+                      src={getOptimizedImageUrl(story.cover.image_url, {
+                        width: 400,
+                        height: 300,
+                        quality: 80
+                      })}
                       alt={story.title}
                       className="w-full h-48 object-cover"
                       loading="lazy"