diff --git a/src/app/(dashboard)/images/page.tsx b/src/app/(dashboard)/images/page.tsx
index 5fdbee6..71f2e16 100644
--- a/src/app/(dashboard)/images/page.tsx
+++ b/src/app/(dashboard)/images/page.tsx
@@ -1,5 +1,5 @@
 'use client'
-import { useState } from 'react'
+import { useState, useCallback } from 'react'
 import { Header } from '@/components/layout/Header'
 import { DropZone } from '@/components/images/DropZone'
 import { ImageCard } from '@/components/images/ImageCard'
@@ -10,8 +10,36 @@ import { useImages } from '@/hooks/useImages'
 import type { ImageItem } from '@/types/images'
 
 function ImagesPageInner() {
-  const { items, addFiles, setFeather, setAlphaThreshold, rotate, uploadOne, uploadAll, removeItem, assignProduct, reprocess } = useImages()
+  const { items, addFiles, setFeather, setAlphaThreshold, rotate, uploadOne, uploadAll, removeItem, assignProduct, reprocess, detour } = useImages()
   const [lightboxItem, setLightboxItem] = useState<ImageItem | null>(null)
+  const [selected, setSelected] = useState<Set<string>>(new Set())
+
+  const toggleSelect = useCallback((id: string, value: boolean) => {
+    setSelected(prev => {
+      const next = new Set(prev)
+      if (value) next.add(id)
+      else next.delete(id)
+      return next
+    })
+  }, [])
+
+  const selectAll = useCallback(() => {
+    const detourable = items.filter(i =>
+      i.status === 'converted' || i.status === 'not_found' || i.status === 'error'
+    )
+    setSelected(new Set(detourable.map(i => i.id) as string[]))
+  }, [items])
+
+  const clearSelection = useCallback(() => setSelected(new Set()), [])
+
+  const detourSelected = useCallback(() => {
+    Array.from(selected).forEach(id => detour(id))
+    setSelected(new Set())
+  }, [selected, detour])
+
+  const detourable = items.filter(i =>
+    i.status === 'converted' || i.status === 'not_found' || i.status === 'error'
+  )
 
   return (
     <>
@@ -31,12 +59,39 @@ function ImagesPageInner() {
           <GlobalActions items={items} onUploadAll={uploadAll} />
         )}
 
+        {/* Barre de sélection multiple pour détourage par lot */}
+        {detourable.length > 0 && (
+          <div className="flex items-center gap-3 px-3 py-2 bg-slate-800 rounded-lg border border-slate-700">
+            <span className="text-xs text-slate-400">{detourable.length} image{detourable.length > 1 ? 's' : ''} sans détourage</span>
+            <button onClick={selectAll} className="text-xs text-indigo-400 hover:text-indigo-300">
+              Tout sélectionner
+            </button>
+            {selected.size > 0 && (
+              <>
+                <span className="text-xs text-slate-500">·</span>
+                <span className="text-xs text-white font-medium">{selected.size} sélectionnée{selected.size > 1 ? 's' : ''}</span>
+                <button
+                  onClick={detourSelected}
+                  className="ml-auto px-3 py-1 text-xs bg-purple-700 hover:bg-purple-600 text-white font-semibold rounded"
+                >
+                  ✂️ Détourer la sélection
+                </button>
+                <button onClick={clearSelection} className="text-xs text-slate-500 hover:text-slate-300">
+                  ✕
+                </button>
+              </>
+            )}
+          </div>
+        )}
+
         {items.length > 0 && (
           <div className="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-4 xl:grid-cols-5 gap-4">
             {items.map((item) => (
               <ImageCard
                 key={item.id}
                 item={item}
+                selected={selected.has(item.id)}
+                onSelect={toggleSelect}
                 onFeatherChange={setFeather}
                 onAlphaThresholdChange={setAlphaThreshold}
                 onRotate={rotate}
@@ -45,6 +100,7 @@ function ImagesPageInner() {
                 onOpenLightbox={setLightboxItem}
                 onAssignProduct={assignProduct}
                 onReprocess={reprocess}
+                onDetour={detour}
               />
             ))}
           </div>
diff --git a/src/components/images/ImageCard.tsx b/src/components/images/ImageCard.tsx
index 8595c48..0b74946 100644
--- a/src/components/images/ImageCard.tsx
+++ b/src/components/images/ImageCard.tsx
@@ -4,6 +4,8 @@ import type { ImageItem } from '@/types/images'
 
 interface ImageCardProps {
   item: ImageItem
+  selected?: boolean
+  onSelect?: (id: string, selected: boolean) => void
   onFeatherChange: (id: string, value: number) => void
   onAlphaThresholdChange: (id: string, value: number) => void
   onRotate: (id: string, direction: 'cw' | 'ccw') => void
@@ -12,19 +14,21 @@ interface ImageCardProps {
   onOpenLightbox: (item: ImageItem) => void
   onAssignProduct: (id: string, shopifyProductId: string, shopifyProductTitle: string) => void
   onReprocess: (id: string) => void
+  onDetour: (id: string) => void
 }
 
 const STATUS_LABELS: Record<string, { label: string; color: string }> = {
-  pending:    { label: '⏳ En attente',      color: 'text-slate-400' },
-  converting: { label: '🔄 Conversion HEIC', color: 'text-yellow-400' },
-  processing: { label: '🤖 Détourage IA',    color: 'text-blue-400' },
-  searching:  { label: '🔍 Recherche…',      color: 'text-purple-400' },
-  ready:      { label: '✓ Prêt',             color: 'text-green-400' },
-  uploading:  { label: '⬆️ Upload…',         color: 'text-blue-400' },
-  uploaded:   { label: '✅ Uploadé',         color: 'text-green-500' },
-  skipped:    { label: '⏭️ Déjà sur Shopify', color: 'text-slate-400' },
-  not_found:  { label: '❌ Réf. introuvable', color: 'text-red-400' },
-  error:      { label: '❌ Erreur',           color: 'text-red-400' },
+  pending:    { label: '⏳ En attente',         color: 'text-slate-400' },
+  converting: { label: '🔄 Conversion HEIC',    color: 'text-yellow-400' },
+  searching:  { label: '🔍 Recherche…',         color: 'text-purple-400' },
+  converted:  { label: '✓ Prêt (sans détourage)', color: 'text-amber-400' },
+  processing: { label: '🤖 Détourage IA',       color: 'text-blue-400' },
+  ready:      { label: '✓ Détouré',             color: 'text-green-400' },
+  uploading:  { label: '⬆️ Upload…',            color: 'text-blue-400' },
+  uploaded:   { label: '✅ Uploadé',            color: 'text-green-500' },
+  skipped:    { label: '⏭️ Déjà sur Shopify',   color: 'text-slate-400' },
+  not_found:  { label: '❌ Réf. introuvable',   color: 'text-red-400' },
+  error:      { label: '❌ Erreur',              color: 'text-red-400' },
 }
 
 function BlobThumbnail({ blob, alt }: { blob: Blob; alt: string }) {
@@ -95,6 +99,8 @@ function ProductSearch({ itemId, onAssign }: { itemId: string; onAssign: (id: st
 
 export function ImageCard({
   item,
+  selected = false,
+  onSelect,
   onFeatherChange,
   onAlphaThresholdChange,
   onRotate,
@@ -103,18 +109,31 @@ export function ImageCard({
   onOpenLightbox,
   onAssignProduct,
   onReprocess,
+  onDetour,
 }: ImageCardProps) {
   const statusInfo = STATUS_LABELS[item.status] ?? { label: item.status, color: 'text-slate-400' }
   const isProcessing = ['pending', 'converting', 'processing', 'searching', 'uploading'].includes(item.status)
   const canAdjust = !!item.rawPngBlob && !isProcessing
+  const canUpload = (item.status === 'ready' || item.status === 'converted') && !!item.shopifyProductId
+  const canDetour = (item.status === 'converted' || item.status === 'error' || item.status === 'not_found') && !isProcessing
 
   return (
-    <div className="bg-slate-900 border border-slate-700 rounded-xl overflow-hidden flex flex-col">
+    <div className={`bg-slate-900 border rounded-xl overflow-hidden flex flex-col ${selected ? 'border-indigo-500 ring-1 ring-indigo-500' : 'border-slate-700'}`}>
       {/* Miniatures avant / après */}
       <div
         className="relative h-40 bg-slate-800 cursor-pointer"
         onClick={() => onOpenLightbox(item)}
       >
+        {onSelect && (
+          <div className="absolute top-2 left-2 z-10" onClick={e => e.stopPropagation()}>
+            <input
+              type="checkbox"
+              checked={selected}
+              onChange={e => onSelect(item.id, e.target.checked)}
+              className="w-4 h-4 accent-indigo-500 cursor-pointer"
+            />
+          </div>
+        )}
         <div className={`absolute top-0 bottom-0 left-0 overflow-hidden ${item.processedBlob ? 'w-1/2' : 'w-full'}`}>
           <BlobThumbnail blob={item.originalBlob} alt="Original" />
         </div>
@@ -195,7 +214,7 @@ export function ImageCard({
 
         {/* Boutons d'action */}
         <div className="flex gap-2 mt-auto pt-1">
-          {item.status === 'ready' && (
+          {canUpload && (
             <button
               onClick={() => onUpload(item.id)}
               className="flex-1 py-1.5 text-xs bg-indigo-600 hover:bg-indigo-500 text-white font-semibold rounded"
@@ -203,7 +222,16 @@ export function ImageCard({
               ⬆️ Uploader
             </button>
           )}
-          {(item.status === 'ready' || item.status === 'uploaded' || item.status === 'skipped' || item.status === 'error' || item.status === 'not_found') && item.rawPngBlob && (
+          {canDetour && (
+            <button
+              onClick={() => onDetour(item.id)}
+              title="Lancer le détourage IA"
+              className="flex-1 py-1.5 text-xs bg-purple-700 hover:bg-purple-600 text-white font-semibold rounded"
+            >
+              ✂️ Détourer
+            </button>
+          )}
+          {(item.status === 'ready' || item.status === 'uploaded' || item.status === 'skipped' || item.status === 'error') && item.rawPngBlob && (
             <button
               onClick={() => onReprocess(item.id)}
               title="Relancer le détourage IA"
diff --git a/src/hooks/useImages.ts b/src/hooks/useImages.ts
index 1420667..3087590 100644
--- a/src/hooks/useImages.ts
+++ b/src/hooks/useImages.ts
@@ -59,7 +59,6 @@ function blobToBase64(blob: Blob): Promise<string> {
     const reader = new FileReader()
     reader.onload = () => {
       const result = reader.result as string
-      // Supprimer le préfixe "data:image/jpeg;base64,"
       const base64 = result.split(',')[1]
       resolve(base64)
     }
@@ -83,24 +82,21 @@ export function useImages() {
     async (id: string, ref: string) => {
       update(id, { status: 'searching' })
       try {
-        // 1. Cherche d'abord dans Google Sheets (col C = UGS → col A = Shopify ID)
         const sheetsRes = await fetch(`/api/products/search-sheets?ref=${encodeURIComponent(ref)}`)
         const sheetsData = await sheetsRes.json()
         if (sheetsData.found) {
           update(id, {
-            status: 'ready',
+            status: 'converted',
             shopifyProductId: sheetsData.shopifyId,
             shopifyProductTitle: sheetsData.title,
           })
           return
         }
-
-        // 2. Fallback : recherche directe dans Shopify par handle/titre
         const res = await fetch(`/api/products/search?ref=${encodeURIComponent(ref)}`)
         const data = await res.json()
         if (data.found) {
           update(id, {
-            status: 'ready',
+            status: 'converted',
             shopifyProductId: data.shopifyId,
             shopifyProductTitle: data.title,
           })
@@ -114,31 +110,40 @@ export function useImages() {
     [update],
   )
 
-  // Pipeline complet pour un item (avec ref)
-  const runPipeline = useCallback(
-    async (id: string, blob: Blob, ref: string, feather: number, rotation: number, alphaThreshold: number) => {
+  // Pipeline léger : conversion HEIC + recherche produit (sans détourage IA)
+  const runConvertAndSearch = useCallback(
+    async (id: string, blob: Blob, ref: string) => {
       const { convertHeicToJpeg } = await import('@/lib/client/heicConverter')
-      const { removeBackgroundRaw, compositeOnWhite } = await import('@/lib/client/bgRemover')
-      const { rotateBlob } = await import('@/lib/client/imageRotator')
 
       let jpegBlob = blob
-
       if (blob.type === 'image/heic' || blob.type === 'image/heif' || blob.type === '') {
         try {
           update(id, { status: 'converting' })
           jpegBlob = await convertHeicToJpeg(blob)
-          // Met à jour originalBlob avec le JPEG converti (Chrome ne peut pas afficher HEIC)
           update(id, { originalBlob: jpegBlob })
         } catch (err) {
           update(id, { status: 'error', error: `Conversion HEIC : ${(err as Error).message}` })
           return
         }
+      } else {
+        update(id, { status: 'searching' })
       }
 
+      await searchProduct(id, ref)
+    },
+    [update, searchProduct],
+  )
+
+  // Pipeline IA complet : détourage + composite + rotation
+  const runBgRemoval = useCallback(
+    async (id: string, blob: Blob, feather: number, rotation: number, alphaThreshold: number) => {
+      const { removeBackgroundRaw, compositeOnWhite } = await import('@/lib/client/bgRemover')
+      const { rotateBlob } = await import('@/lib/client/imageRotator')
+
       let rawPng: Blob
       try {
         update(id, { status: 'processing', progress: null })
-        rawPng = await removeBackgroundRaw(jpegBlob, (p) => update(id, { progress: p }))
+        rawPng = await removeBackgroundRaw(blob, (p) => update(id, { progress: p }))
       } catch (err) {
         update(id, { status: 'error', error: `Détourage IA : ${(err as Error).message}` })
         return
@@ -153,10 +158,9 @@ export function useImages() {
         return
       }
 
-      update(id, { rawPngBlob: rawPng, processedBlob: finalBlob })
-      await searchProduct(id, ref)
+      update(id, { rawPngBlob: rawPng, processedBlob: finalBlob, status: 'ready' })
     },
-    [update, searchProduct],
+    [update],
   )
 
   // Recomposite rapide (feather, alphaThreshold ou rotation changés) — ne relance pas l'IA
@@ -201,15 +205,13 @@ export function useImages() {
             error: null,
             progress: null,
           }))
-          // Recalcule la ref depuis le nom du fichier (plus fiable que le nom du dossier ZIP)
-          // item.filename = "DOSSIER/32263-.heic" → on prend la partie après le dernier "/"
           const itemsWithRef = newItems.map(item => {
             const basename = item.filename.split('/').pop() ?? item.filename
             return { ...item, ref: refFromFilename(basename) }
           })
           dispatch({ type: 'ADD', items: itemsWithRef })
           for (const item of itemsWithRef) {
-            queueRef.current.enqueue(() => runPipeline(item.id, item.originalBlob, item.ref, item.feather, item.rotation, item.alphaThreshold))
+            queueRef.current.enqueue(() => runConvertAndSearch(item.id, item.originalBlob, item.ref))
           }
         } else {
           const ref = refFromFilename(file.name)
@@ -231,11 +233,35 @@ export function useImages() {
             progress: null,
           }
           dispatch({ type: 'ADD', items: [newItem] })
-          queueRef.current.enqueue(() => runPipeline(newItem.id, newItem.originalBlob, newItem.ref, newItem.feather, newItem.rotation, newItem.alphaThreshold))
+          queueRef.current.enqueue(() => runConvertAndSearch(newItem.id, newItem.originalBlob, newItem.ref))
         }
       }
     },
-    [runPipeline],
+    [runConvertAndSearch],
+  )
+
+  // Lancer le détourage IA sur une image (depuis statut converted ou error)
+  const detour = useCallback(
+    (id: string) => {
+      const item = items.find((i) => i.id === id)
+      if (!item) return
+      queueRef.current.enqueue(() =>
+        runBgRemoval(item.id, item.originalBlob, item.feather, item.rotation, item.alphaThreshold)
+      )
+    },
+    [items, runBgRemoval],
+  )
+
+  // Relancer le pipeline complet (conversion + détourage) sur une image déjà traitée
+  const reprocess = useCallback(
+    (id: string) => {
+      const item = items.find((i) => i.id === id)
+      if (!item) return
+      queueRef.current.enqueue(() =>
+        runBgRemoval(item.id, item.originalBlob, item.feather, item.rotation, item.alphaThreshold)
+      )
+    },
+    [items, runBgRemoval],
   )
 
   const setFeather = useCallback(
@@ -270,12 +296,23 @@ export function useImages() {
   const uploadOne = useCallback(
     async (id: string) => {
       const item = items.find((i) => i.id === id)
-      if (!item || item.status !== 'ready' || !item.processedBlob || !item.shopifyProductId) return
+      if (!item) return
+      const canUpload = item.status === 'ready' || item.status === 'converted'
+      if (!canUpload || !item.shopifyProductId) return
 
       update(id, { status: 'uploading' })
 
       try {
-        const base64 = await blobToBase64(item.processedBlob)
+        // Si détouré : utilise processedBlob ; sinon : redimensionne à 1000×1000
+        let uploadBlob: Blob
+        if (item.processedBlob) {
+          uploadBlob = item.processedBlob
+        } else {
+          const { resizeToSquare } = await import('@/lib/client/imageResizer')
+          uploadBlob = await resizeToSquare(item.originalBlob)
+        }
+
+        const base64 = await blobToBase64(uploadBlob)
         const basename = item.filename.split('/').pop()?.replace(/\.[^.]+$/, '') ?? item.ref
         const filename = `${basename}.jpg`
 
@@ -288,7 +325,7 @@ export function useImages() {
 
         let res = await doUpload(item.shopifyProductId)
 
-        // 404 = ID périmé (produit supprimé/recréé) → relancer la recherche par ref
+        // 404 = ID périmé → relancer la recherche par ref
         if (res.status === 404) {
           const searchRes = await fetch(`/api/products/search?ref=${encodeURIComponent(item.ref)}`)
           const searchData = await searchRes.json()
@@ -309,10 +346,9 @@ export function useImages() {
   )
 
   const uploadAll = useCallback(async () => {
-    const ready = items.filter((i) => i.status === 'ready')
+    const ready = items.filter((i) => i.status === 'ready' || i.status === 'converted')
     for (const item of ready) {
       await uploadOne(item.id)
-      // Pause de 500ms entre chaque upload pour éviter le rate limit Shopify
       await new Promise(r => setTimeout(r, 500))
     }
   }, [items, uploadOne])
@@ -323,21 +359,12 @@ export function useImages() {
 
   const assignProduct = useCallback(
     (id: string, shopifyProductId: string, shopifyProductTitle: string) => {
-      update(id, { shopifyProductId, shopifyProductTitle, status: 'ready' })
-    },
-    [update],
-  )
-
-  const reprocess = useCallback(
-    (id: string) => {
       const item = items.find((i) => i.id === id)
-      if (!item) return
-      queueRef.current.enqueue(() =>
-        runPipeline(item.id, item.originalBlob, item.ref, item.feather, item.rotation, item.alphaThreshold)
-      )
+      const newStatus = item?.processedBlob ? 'ready' : 'converted'
+      update(id, { shopifyProductId, shopifyProductTitle, status: newStatus })
     },
-    [items, runPipeline],
+    [items, update],
   )
 
-  return { items, addFiles, setFeather, setAlphaThreshold, rotate, uploadOne, uploadAll, removeItem, assignProduct, reprocess }
+  return { items, addFiles, setFeather, setAlphaThreshold, rotate, uploadOne, uploadAll, removeItem, assignProduct, reprocess, detour }
 }
diff --git a/src/lib/client/imageResizer.ts b/src/lib/client/imageResizer.ts
new file mode 100644
index 0000000..a197626
--- /dev/null
+++ b/src/lib/client/imageResizer.ts
@@ -0,0 +1,15 @@
+export async function resizeToSquare(blob: Blob, size = 1000): Promise<Blob> {
+  const img = await createImageBitmap(blob)
+  const canvas = new OffscreenCanvas(size, size)
+  const ctx = canvas.getContext('2d')!
+  ctx.fillStyle = '#ffffff'
+  ctx.fillRect(0, 0, size, size)
+  const scale = Math.min(size / img.width, size / img.height)
+  const w = img.width * scale
+  const h = img.height * scale
+  const x = (size - w) / 2
+  const y = (size - h) / 2
+  ctx.drawImage(img, x, y, w, h)
+  img.close()
+  return canvas.convertToBlob({ type: 'image/jpeg', quality: 0.92 })
+}
diff --git a/src/types/images.ts b/src/types/images.ts
index 9946e0a..f745414 100644
--- a/src/types/images.ts
+++ b/src/types/images.ts
@@ -1,9 +1,10 @@
 export type ImageStatus =
   | 'pending'      // ajouté, pas encore traité
   | 'converting'   // HEIC → JPEG en cours
-  | 'processing'   // détourage IA en cours
   | 'searching'    // recherche produit Shopify en cours
-  | 'ready'        // prêt à uploader
+  | 'converted'    // converti + recherche terminée, détourage non lancé
+  | 'processing'   // détourage IA en cours
+  | 'ready'        // détouré, prêt à uploader
   | 'uploading'    // upload Shopify en cours
   | 'uploaded'     // uploadé avec succès
   | 'skipped'      // image déjà présente sur le produit Shopify