diff --git a/apps/api/app/controllers/import_batches_controller.ts b/apps/api/app/controllers/import_batches_controller.ts
index 352cb38..a06ad96 100644
--- a/apps/api/app/controllers/import_batches_controller.ts
+++ b/apps/api/app/controllers/import_batches_controller.ts
@@ -120,6 +120,48 @@ export default class ImportBatchesController {
     return response.json({ data: serializeBatch(batch) })
   }
 
+  /**
+   * GET /invoices/import-batch/:id/drafts/:draftId/pdf
+   *
+   * Stream le PDF stocké dans MinIO. Auth via Bearer (le SPA fetch via
+   * api.ts puis crée un objectURL — on ne peut pas mettre Authorization
+   * sur un <iframe src>). On vérifie l'ownership de l'org en chargeant
+   * le batch (loadBatchOrFail) puis on cherche le draft dedans.
+   */
+  async draftPdf({ auth, params, response }: HttpContext) {
+    const organizationId = requireOrgId(auth)
+    const batch = await loadBatchOrFail(organizationId, params.id)
+    const draft = batch.drafts.find((d) => d.id === params.draftId)
+    if (!draft) {
+      throw new Exception('Draft introuvable', { status: 404, code: 'not_found' })
+    }
+    if (!draft.pdfStorageKey) {
+      throw new Exception('Aucun PDF stocké pour ce draft', {
+        status: 404,
+        code: 'pdf_not_available',
+      })
+    }
+    const ext = (draft.filename.split('.').pop() ?? '').toLowerCase()
+    const contentType =
+      ext === 'pdf'
+        ? 'application/pdf'
+        : ext === 'png'
+          ? 'image/png'
+          : ext === 'jpg' || ext === 'jpeg'
+            ? 'image/jpeg'
+            : 'application/octet-stream'
+
+    const buffer = Buffer.from(await drive.use().getArrayBuffer(draft.pdfStorageKey))
+    response.header('Content-Type', contentType)
+    response.header('Cache-Control', 'private, max-age=300')
+    // Inline = visualisable dans un <iframe>/<embed> sans télécharger.
+    response.header(
+      'Content-Disposition',
+      `inline; filename="${encodeURIComponent(draft.filename)}"`
+    )
+    return response.send(buffer)
+  }
+
   /**
    * POST /invoices/import-batch/:id/drafts/:draftId/validate
    *
diff --git a/apps/api/start/routes.ts b/apps/api/start/routes.ts
index 447bd59..c0ed991 100644
--- a/apps/api/start/routes.ts
+++ b/apps/api/start/routes.ts
@@ -167,6 +167,14 @@ router
           .get('import-batch/:id', [controllers.ImportBatches, 'show'])
           .as('import-batch.show')
           .where('id', router.matchers.uuid())
+        router
+          .get('import-batch/:id/drafts/:draftId/pdf', [
+            controllers.ImportBatches,
+            'draftPdf',
+          ])
+          .as('import-batch.draft.pdf')
+          .where('id', router.matchers.uuid())
+          .where('draftId', router.matchers.uuid())
         router
           .post('import-batch/:id/drafts/:draftId/validate', [
             controllers.ImportBatches,
diff --git a/apps/web/src/components/factures/PdfPreview.tsx b/apps/web/src/components/factures/PdfPreview.tsx
index 6509bed..8bef192 100644
--- a/apps/web/src/components/factures/PdfPreview.tsx
+++ b/apps/web/src/components/factures/PdfPreview.tsx
@@ -1,23 +1,78 @@
-import { FileText } from "lucide-react";
+import { useEffect, useState } from "react";
+import { FileText, AlertCircle } from "lucide-react";
+import { api, ApiError } from "@/lib/api";
 import { cn } from "@/lib/utils";
 
 /**
- * Aperçu PDF côté review OCR — placeholder visuel.
+ * Aperçu du fichier importé (PDF / image) côté review OCR.
  *
- * V1 : affiche le nom du fichier + une "preview" abstraite (barres) qui
- * suggèrent un document. Le vrai render PDF (via react-pdf, pdf.js ou un
- * iframe avec object URL) viendra quand le backend stockera réellement
- * les fichiers dans MinIO.
+ * V1 = placeholder hardcoded (`<PdfPreview filename={...} />` sans batchId)
+ * → on n'avait jamais branché le streaming MinIO. Maintenant on fetch
+ * GET /invoices/import-batch/:id/drafts/:draftId/pdf via api.fetchBlob
+ * (Bearer auto-injecté), on crée un object URL, et on l'affiche dans :
+ *  - <iframe> pour les PDF (le viewer Chrome/Safari natif s'occupe du rendu)
+ *  - <img> pour les PNG/JPG
  *
- * Anti-IA-look : pas un viewer générique gris/blanc — fond cream-2 avec
- * des barres rubis-glow pour suggérer le contenu et garder l'identité.
+ * Le fallback "barres" reste si le draft n'a pas de pdfStorageKey
+ * (cas rare : démo MSW, ou import par URL plus tard).
  */
 type PdfPreviewProps = {
   filename: string;
+  /** Nécessaires pour fetch le binaire. Si absents → fallback placeholder. */
+  batchId?: string;
+  draftId?: string;
+  /** Indique si le backend a effectivement un PDF stocké pour ce draft. */
+  pdfAvailable?: boolean;
   className?: string;
 };
 
-export function PdfPreview({ filename, className }: PdfPreviewProps) {
+export function PdfPreview({
+  filename,
+  batchId,
+  draftId,
+  pdfAvailable = true,
+  className,
+}: PdfPreviewProps) {
+  const [objectUrl, setObjectUrl] = useState<string | null>(null);
+  const [contentType, setContentType] = useState<string>("application/pdf");
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    if (!batchId || !draftId || !pdfAvailable) {
+      setObjectUrl(null);
+      return;
+    }
+    const controller = new AbortController();
+    let url: string | null = null;
+    setError(null);
+
+    api
+      .fetchBlob(
+        `/api/v1/invoices/import-batch/${batchId}/drafts/${draftId}/pdf`,
+        controller.signal,
+      )
+      .then(({ blob, contentType: ct }) => {
+        url = URL.createObjectURL(blob);
+        setObjectUrl(url);
+        setContentType(ct);
+      })
+      .catch((err) => {
+        if (controller.signal.aborted) return;
+        if (err instanceof ApiError && err.status === 404) {
+          setError("Aperçu indisponible.");
+        } else {
+          setError("Impossible de charger l'aperçu.");
+        }
+      });
+
+    return () => {
+      controller.abort();
+      if (url) URL.revokeObjectURL(url);
+    };
+  }, [batchId, draftId, pdfAvailable]);
+
+  const isImage = contentType.startsWith("image/");
+
   return (
     <div
       className={cn(
@@ -32,37 +87,72 @@ export function PdfPreview({ filename, className }: PdfPreviewProps) {
         </span>
       </div>
 
-      {/* Pseudo-page A4 ratio. Les "barres" simulent du contenu OCRisé. */}
-      <div className="flex-1 bg-cream/60 p-7 min-h-[420px]">
-        <div className="space-y-2.5">
-          <div className="h-3 w-1/2 rounded-sharp bg-ink/15" />
-          <div className="h-3 w-1/3 rounded-sharp bg-ink/8" />
-        </div>
-        <div className="mt-7 space-y-2">
-          <div className="h-2.5 w-3/4 rounded-sharp bg-ink/10" />
-          <div className="h-2.5 w-2/3 rounded-sharp bg-ink/10" />
-          <div className="h-2.5 w-1/2 rounded-sharp bg-ink/10" />
-        </div>
-        <div className="mt-9 grid grid-cols-2 gap-3">
-          <div className="h-7 rounded-sharp bg-rubis-glow/70" />
-          <div className="h-7 rounded-sharp bg-rubis-glow/70" />
-        </div>
-        <div className="mt-3 grid grid-cols-2 gap-3">
-          <div className="h-7 rounded-sharp bg-cream-2" />
-          <div className="h-7 rounded-sharp bg-cream-2" />
-        </div>
-        <div className="mt-9 space-y-2">
-          <div className="h-2.5 w-2/3 rounded-sharp bg-ink/10" />
-          <div className="h-2.5 w-1/2 rounded-sharp bg-ink/10" />
-        </div>
-        <div className="mt-7 flex justify-end">
-          <div className="h-9 w-1/3 rounded-sharp bg-ink/15" />
-        </div>
+      <div className="flex-1 bg-cream/60 min-h-[420px] relative">
+        {objectUrl ? (
+          isImage ? (
+            <img
+              src={objectUrl}
+              alt={`Aperçu ${filename}`}
+              className="w-full h-full max-h-[680px] object-contain bg-white"
+            />
+          ) : (
+            <iframe
+              src={objectUrl}
+              title={`Aperçu ${filename}`}
+              className="w-full h-full min-h-[680px] border-0"
+            />
+          )
+        ) : error ? (
+          <div className="flex flex-col items-center justify-center gap-2 h-full p-7 text-ink-3">
+            <AlertCircle size={20} className="text-rubis-deep" />
+            <p className="text-[13px]">{error}</p>
+            <p className="text-[11.5px] italic">Vous pouvez quand même valider à partir des champs OCR.</p>
+          </div>
+        ) : pdfAvailable && batchId && draftId ? (
+          <div className="flex items-center justify-center h-full p-7">
+            <div
+              className="size-6 animate-spin rounded-full border-2 border-rubis-glow border-t-rubis"
+              aria-label="Chargement de l'aperçu"
+            />
+          </div>
+        ) : (
+          <PdfPlaceholder />
+        )}
       </div>
+    </div>
+  );
+}
 
-      <p className="border-t border-line bg-cream-2/40 px-4 py-2 text-[11px] italic text-ink-3">
-        Aperçu simplifié — le rendu PDF complet arrivera avec le vrai pipeline
-        d&apos;import.
+/**
+ * Placeholder utilisé quand aucun PDF n'est dispo (mocks MSW, ou
+ * import sans fichier réel). Garde l'identité visuelle.
+ */
+function PdfPlaceholder() {
+  return (
+    <div className="p-7">
+      <div className="space-y-2.5">
+        <div className="h-3 w-1/2 rounded-sharp bg-ink/15" />
+        <div className="h-3 w-1/3 rounded-sharp bg-ink/8" />
+      </div>
+      <div className="mt-7 space-y-2">
+        <div className="h-2.5 w-3/4 rounded-sharp bg-ink/10" />
+        <div className="h-2.5 w-2/3 rounded-sharp bg-ink/10" />
+        <div className="h-2.5 w-1/2 rounded-sharp bg-ink/10" />
+      </div>
+      <div className="mt-9 grid grid-cols-2 gap-3">
+        <div className="h-7 rounded-sharp bg-rubis-glow/70" />
+        <div className="h-7 rounded-sharp bg-rubis-glow/70" />
+      </div>
+      <div className="mt-3 grid grid-cols-2 gap-3">
+        <div className="h-7 rounded-sharp bg-cream-2" />
+        <div className="h-7 rounded-sharp bg-cream-2" />
+      </div>
+      <div className="mt-9 space-y-2">
+        <div className="h-2.5 w-2/3 rounded-sharp bg-ink/10" />
+        <div className="h-2.5 w-1/2 rounded-sharp bg-ink/10" />
+      </div>
+      <p className="mt-7 text-[11px] italic text-ink-3 text-center">
+        Aperçu non disponible pour cette source.
       </p>
     </div>
   );
diff --git a/apps/web/src/lib/api.ts b/apps/web/src/lib/api.ts
index 3f74371..a63e13a 100644
--- a/apps/web/src/lib/api.ts
+++ b/apps/web/src/lib/api.ts
@@ -181,4 +181,23 @@ export const api = {
   ): Promise<T> => request<T>(path, { ...options, method: "PATCH", body }),
   delete: <T>(path: string, options?: Omit<RequestOptions, "method" | "body">): Promise<T> =>
     request<T>(path, { ...options, method: "DELETE" }),
+
+  /**
+   * Fetch d'un binaire (PDF, image…) avec le Bearer auto-injecté. Renvoie
+   * un Blob + le content-type. Pas de silent refresh sur 401 (cas rare
+   * pour des assets longue durée), si besoin re-fetch côté caller.
+   */
+  fetchBlob: async (path: string, signal?: AbortSignal): Promise<{ blob: Blob; contentType: string }> => {
+    const url = path.startsWith("http") ? path : `${env.VITE_API_URL}${path}`;
+    const res = await fetch(url, {
+      headers: authStore.token ? { Authorization: `Bearer ${authStore.token}` } : {},
+      credentials: "include",
+      signal,
+    });
+    if (!res.ok) {
+      throw new ApiError(res.status, "blob_fetch_failed", `HTTP ${res.status} on ${path}`);
+    }
+    const blob = await res.blob();
+    return { blob, contentType: res.headers.get("content-type") ?? blob.type };
+  },
 };
diff --git a/apps/web/src/routes/_app/factures_.import_.$batchId.tsx b/apps/web/src/routes/_app/factures_.import_.$batchId.tsx
index da7e8f5..bfa1c94 100644
--- a/apps/web/src/routes/_app/factures_.import_.$batchId.tsx
+++ b/apps/web/src/routes/_app/factures_.import_.$batchId.tsx
@@ -55,6 +55,8 @@ type DraftFields = {
 type ImportDraft = {
   id: string;
   filename: string;
+  /** Clé de stockage S3/MinIO. null en mode démo MSW (pas de vrai fichier). */
+  pdfStorageKey: string | null;
   extracted: DraftFields;
   edited: DraftFields;
   confidence: Partial<Record<keyof DraftFields, number>>;
@@ -241,7 +243,12 @@ function ImportReviewPage() {
 
       {/* === Body : 2 cols === */}
       <div className="grid grid-cols-1 gap-5 lg:grid-cols-[1fr_1.1fr]">
-        <PdfPreview filename={currentDraft.filename} />
+        <PdfPreview
+          filename={currentDraft.filename}
+          batchId={batchId}
+          draftId={currentDraft.id}
+          pdfAvailable={!!currentDraft.pdfStorageKey}
+        />
 
         <Card padding="md" className="flex flex-col gap-5">
           <div className="flex flex-col gap-1">