diff --git a/frontend/src/views/AdminBusinessEditor.vue b/frontend/src/views/AdminBusinessEditor.vue
index d2555d8..4e58883 100644
--- a/frontend/src/views/AdminBusinessEditor.vue
+++ b/frontend/src/views/AdminBusinessEditor.vue
@@ -200,6 +200,9 @@ const catEmoji = computed(() => CATEGORY_EMOJI[businessForm.value.category || ''
                   {{ selectedFileName || 'SELECCIONAR FOTO' }}
                 </label>
               </div>
+              <p style="font-size: 0.7rem; color: #94a3b8; margin-top: 8px;">
+                💡 <strong>Recomendación:</strong> Resolución de 800x600px (4:3) o similar para que encaje perfecto en las tarjetas principales. Peso máximo sugerido: 5MB.
+              </p>
             </div>
           </div>
 
@@ -306,7 +309,10 @@ const catEmoji = computed(() => CATEGORY_EMOJI[businessForm.value.category || ''
               <label for="gallery-input" class="gallery-upload-label">
                 <span class="material-icons" style="font-size:36px">add_photo_alternate</span>
                 <span>Agregar fotos a la galería</span>
-                <span style="font-size:0.7rem;opacity:0.6">PNG, JPG hasta 5 MB cada una</span>
+                <span style="font-size:0.75rem; color: #fee715; margin-top: 4px;">
+                  💡 <strong>Mejor visual:</strong> Usa formato horizontal / apaisado (16:9) como <strong>1200x675px</strong>.
+                </span>
+                <span style="font-size:0.7rem;opacity:0.6; margin-top: 4px;">PNG, JPG hasta 5 MB cada una</span>
               </label>
             </div>
 
diff --git a/frontend/src/views/BusinessDetailsView.vue b/frontend/src/views/BusinessDetailsView.vue
index 4fda4e7..cd8121f 100644
--- a/frontend/src/views/BusinessDetailsView.vue
+++ b/frontend/src/views/BusinessDetailsView.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, onMounted, computed } from 'vue'
+import { ref, onMounted, computed, onUnmounted } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { businessService } from '@/services/businessService'
 import { couponsService } from '@/services/couponsService'
@@ -49,6 +49,7 @@ async function fetchData() {
     ])
     business.value = bizData
     coupons.value = allCoupons.filter(c => c.business_id === id)
+    startCarouselTimer()
     analyticsService.logEvent({
       event_name: 'view_details',
       entity_type: 'business',
@@ -110,13 +111,43 @@ function openFacebook() {
   window.open(fb.startsWith('http') ? fb : `https://facebook.com/${fb}`, '_blank')
 }
 
+let carouselTimer: number | ReturnType<typeof setInterval> | null = null
+
+function startCarouselTimer() {
+  stopCarouselTimer()
+  if (galleryImages.value.length > 1) {
+    carouselTimer = setInterval(() => {
+      carouselIndex.value = (carouselIndex.value + 1) % galleryImages.value.length
+    }, 4000)
+  }
+}
+
+function stopCarouselTimer() {
+  if (carouselTimer !== null) {
+    clearInterval(carouselTimer as any)
+    carouselTimer = null
+  }
+}
+
 function prevSlide() {
   carouselIndex.value = (carouselIndex.value - 1 + galleryImages.value.length) % galleryImages.value.length
+  startCarouselTimer()
 }
+
 function nextSlide() {
   carouselIndex.value = (carouselIndex.value + 1) % galleryImages.value.length
+  startCarouselTimer()
 }
 
+function setSlide(idx: number) {
+  carouselIndex.value = idx
+  startCarouselTimer()
+}
+
+onUnmounted(() => {
+  stopCarouselTimer()
+})
+
 // Quick info pills computed
 const quickInfoPills = computed(() => {
   if (!business.value) return []
@@ -260,7 +291,7 @@ const hasSocials = computed(() =>
               :key="dotIdx"
               class="car-dot"
               :class="{ 'car-dot-active': dotIdx === carouselIndex }"
-              @click="carouselIndex = dotIdx"
+              @click="setSlide(dotIdx)"
             ></span>
           </div>
         </template>