diff --git a/client/src/App.tsx b/client/src/App.tsx
index 8fb5220..96a19d5 100644
--- a/client/src/App.tsx
+++ b/client/src/App.tsx
@@ -9,6 +9,7 @@ import Login from "./pages/Login";
 import Dashboard from "./pages/Dashboard";
 import Upload from "./pages/Upload";
 import Invoices from "./pages/Invoices";
+import InvoiceDetail from "./pages/InvoiceDetail";
 import Settings from "./pages/Settings";
 import History from "./pages/History";
 import Users from "./pages/Users";
@@ -21,6 +22,7 @@ function Router() {
       <Route path="/dashboard" component={Dashboard} />
       <Route path="/upload" component={Upload} />
       <Route path="/invoices" component={Invoices} />
+      <Route path="/invoices/:id" component={InvoiceDetail} />
       <Route path="/settings" component={Settings} />
       <Route path="/history" component={History} />
       <Route path="/users" component={Users} />
diff --git a/client/src/pages/InvoiceDetail.tsx b/client/src/pages/InvoiceDetail.tsx
new file mode 100644
index 0000000..462df76
--- /dev/null
+++ b/client/src/pages/InvoiceDetail.tsx
@@ -0,0 +1,346 @@
+import { useState } from "react";
+import { useParams, useLocation } from "wouter";
+import DashboardLayout from "@/components/DashboardLayout";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { Badge } from "@/components/ui/badge";
+import { trpc } from "@/lib/trpc";
+import { ArrowLeft, Save, FileText } from "lucide-react";
+import { toast } from "sonner";
+
+export default function InvoiceDetail() {
+  const { id } = useParams<{ id: string }>();
+  const [, setLocation] = useLocation();
+  const invoiceId = parseInt(id || "0");
+  
+  const { data: invoice, isLoading } = trpc.invoices.getById.useQuery({ id: invoiceId });
+  const utils = trpc.useUtils();
+
+  const [isEditing, setIsEditing] = useState(false);
+  const [formData, setFormData] = useState({
+    supplierName: "",
+    invoiceNumber: "",
+    invoiceDate: "",
+    deliveryNoteNumber: "",
+    orderNumber: "",
+    totalAmount: "",
+  });
+
+  // Initialize form data when invoice loads
+  useState(() => {
+    if (invoice) {
+      setFormData({
+        supplierName: invoice.supplierName || "",
+        invoiceNumber: invoice.invoiceNumber || "",
+        invoiceDate: invoice.invoiceDate 
+          ? new Date(invoice.invoiceDate).toISOString().split('T')[0] 
+          : "",
+        deliveryNoteNumber: invoice.deliveryNoteNumber || "",
+        orderNumber: invoice.orderNumber || "",
+        totalAmount: invoice.totalAmount ? invoice.totalAmount.toString() : "",
+      });
+    }
+  });
+
+  const updateMutation = trpc.invoices.update.useMutation({
+    onSuccess: () => {
+      toast.success("Facture mise à jour avec succès");
+      setIsEditing(false);
+      utils.invoices.getById.invalidate({ id: invoiceId });
+      utils.invoices.list.invalidate();
+    },
+    onError: (error) => {
+      toast.error(error.message || "Erreur lors de la mise à jour");
+    },
+  });
+
+  const handleSave = () => {
+    // Calculate new quality score based on filled fields
+    let filledFields = 0;
+    let totalFields = 6;
+    
+    if (formData.supplierName) filledFields++;
+    if (formData.invoiceNumber) filledFields++;
+    if (formData.invoiceDate) filledFields++;
+    if (formData.deliveryNoteNumber) filledFields++;
+    if (formData.orderNumber) filledFields++;
+    if (formData.totalAmount) filledFields++;
+    
+    const newQualityScore = Math.round((filledFields / totalFields) * 100);
+
+    updateMutation.mutate({
+      id: invoiceId,
+      data: {
+        supplierName: formData.supplierName || undefined,
+        invoiceNumber: formData.invoiceNumber || undefined,
+        invoiceDate: formData.invoiceDate ? new Date(formData.invoiceDate) : undefined,
+        deliveryNoteNumber: formData.deliveryNoteNumber || undefined,
+        orderNumber: formData.orderNumber || undefined,
+        totalAmount: formData.totalAmount ? formData.totalAmount : undefined,
+      },
+    });
+  };
+
+  const getStatusBadge = (status: string) => {
+    switch (status) {
+      case "exported":
+        return <Badge className="bg-green-100 text-green-800 hover:bg-green-100">Exporté</Badge>;
+      case "not_exported":
+        return <Badge className="bg-blue-100 text-blue-800 hover:bg-blue-100">Non exporté</Badge>;
+      case "export_error":
+        return <Badge className="bg-red-100 text-red-800 hover:bg-red-100">Erreur export</Badge>;
+      default:
+        return <Badge variant="outline">{status}</Badge>;
+    }
+  };
+
+  const getQualityBadge = (score: number | null) => {
+    if (score === null) return <Badge variant="outline">-</Badge>;
+    if (score === 100) return <Badge className="bg-green-100 text-green-800 hover:bg-green-100">{score}%</Badge>;
+    if (score >= 80) return <Badge className="bg-yellow-100 text-yellow-800 hover:bg-yellow-100">{score}%</Badge>;
+    return <Badge className="bg-red-100 text-red-800 hover:bg-red-100">{score}%</Badge>;
+  };
+
+  if (isLoading) {
+    return (
+      <DashboardLayout>
+        <div className="flex items-center justify-center h-96">
+          <div className="text-muted-foreground">Chargement...</div>
+        </div>
+      </DashboardLayout>
+    );
+  }
+
+  if (!invoice) {
+    return (
+      <DashboardLayout>
+        <div className="flex flex-col items-center justify-center h-96">
+          <FileText className="w-16 h-16 text-gray-300 mb-4" />
+          <h2 className="text-2xl font-bold mb-2">Facture introuvable</h2>
+          <p className="text-gray-500 mb-4">Cette facture n'existe pas ou a été supprimée</p>
+          <Button onClick={() => setLocation("/invoices")}>
+            <ArrowLeft className="w-4 h-4 mr-2" />
+            Retour aux factures
+          </Button>
+        </div>
+      </DashboardLayout>
+    );
+  }
+
+  return (
+    <DashboardLayout>
+      <div className="space-y-6">
+        {/* Header */}
+        <div className="flex items-center justify-between">
+          <div className="flex items-center gap-4">
+            <Button variant="ghost" onClick={() => setLocation("/invoices")}>
+              <ArrowLeft className="w-4 h-4 mr-2" />
+              Retour
+            </Button>
+            <div>
+              <h1 className="text-3xl font-bold">Détail de la facture</h1>
+              <p className="text-gray-500 mt-1">
+                {invoice.supplierName || "Fournisseur inconnu"} • {invoice.invoiceNumber || "N° inconnu"}
+              </p>
+            </div>
+          </div>
+          <div className="flex gap-2">
+            {isEditing ? (
+              <>
+                <Button variant="outline" onClick={() => setIsEditing(false)}>
+                  Annuler
+                </Button>
+                <Button onClick={handleSave} disabled={updateMutation.isPending}>
+                  <Save className="w-4 h-4 mr-2" />
+                  Enregistrer
+                </Button>
+              </>
+            ) : (
+              <Button onClick={() => setIsEditing(true)}>
+                Modifier
+              </Button>
+            )}
+          </div>
+        </div>
+
+        <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
+          {/* Left column - PDF Viewer */}
+          <div className="lg:col-span-2">
+            <Card>
+              <CardHeader>
+                <CardTitle>Aperçu du document</CardTitle>
+                <CardDescription>Fichier PDF de la facture</CardDescription>
+              </CardHeader>
+              <CardContent>
+                <div className="border rounded-lg overflow-hidden bg-gray-50">
+                  <iframe
+                    src={invoice.fileUrl}
+                    className="w-full h-[800px]"
+                    title="Aperçu de la facture"
+                  />
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+
+          {/* Right column - Metadata */}
+          <div className="space-y-6">
+            {/* Status Card */}
+            <Card>
+              <CardHeader>
+                <CardTitle>Statut</CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-3">
+                <div>
+                  <Label className="text-sm text-gray-500">Statut d'export</Label>
+                  <div className="mt-1">{getStatusBadge(invoice.exportStatus || "not_exported")}</div>
+                </div>
+                <div>
+                  <Label className="text-sm text-gray-500">Score de qualité</Label>
+                  <div className="mt-1">{getQualityBadge(invoice.qualityScore)}</div>
+                </div>
+                {invoice.manuallyEdited === 1 && (
+                  <div>
+                    <Badge variant="outline" className="bg-orange-50 text-orange-700 border-orange-200">
+                      Modifié manuellement
+                    </Badge>
+                  </div>
+                )}
+              </CardContent>
+            </Card>
+
+            {/* Metadata Card */}
+            <Card>
+              <CardHeader>
+                <CardTitle>Métadonnées</CardTitle>
+                <CardDescription>
+                  {isEditing ? "Modifiez les champs ci-dessous" : "Informations extraites de la facture"}
+                </CardDescription>
+              </CardHeader>
+              <CardContent className="space-y-4">
+                <div>
+                  <Label htmlFor="supplierName">Fournisseur</Label>
+                  {isEditing ? (
+                    <Input
+                      id="supplierName"
+                      value={formData.supplierName}
+                      onChange={(e) => setFormData({ ...formData, supplierName: e.target.value })}
+                      placeholder="Nom du fournisseur"
+                    />
+                  ) : (
+                    <div className="text-sm mt-1">{invoice.supplierName || "-"}</div>
+                  )}
+                </div>
+
+                <div>
+                  <Label htmlFor="invoiceNumber">Numéro de facture</Label>
+                  {isEditing ? (
+                    <Input
+                      id="invoiceNumber"
+                      value={formData.invoiceNumber}
+                      onChange={(e) => setFormData({ ...formData, invoiceNumber: e.target.value })}
+                      placeholder="N° de facture"
+                    />
+                  ) : (
+                    <div className="text-sm mt-1">{invoice.invoiceNumber || "-"}</div>
+                  )}
+                </div>
+
+                <div>
+                  <Label htmlFor="invoiceDate">Date de facture</Label>
+                  {isEditing ? (
+                    <Input
+                      id="invoiceDate"
+                      type="date"
+                      value={formData.invoiceDate}
+                      onChange={(e) => setFormData({ ...formData, invoiceDate: e.target.value })}
+                    />
+                  ) : (
+                    <div className="text-sm mt-1">
+                      {invoice.invoiceDate 
+                        ? new Date(invoice.invoiceDate).toLocaleDateString("fr-FR")
+                        : "-"}
+                    </div>
+                  )}
+                </div>
+
+                <div>
+                  <Label htmlFor="deliveryNoteNumber">N° Bon de livraison</Label>
+                  {isEditing ? (
+                    <Input
+                      id="deliveryNoteNumber"
+                      value={formData.deliveryNoteNumber}
+                      onChange={(e) => setFormData({ ...formData, deliveryNoteNumber: e.target.value })}
+                      placeholder="N° de bon de livraison"
+                    />
+                  ) : (
+                    <div className="text-sm mt-1">{invoice.deliveryNoteNumber || "-"}</div>
+                  )}
+                </div>
+
+                <div>
+                  <Label htmlFor="orderNumber">N° de commande</Label>
+                  {isEditing ? (
+                    <Input
+                      id="orderNumber"
+                      value={formData.orderNumber}
+                      onChange={(e) => setFormData({ ...formData, orderNumber: e.target.value })}
+                      placeholder="N° de commande"
+                    />
+                  ) : (
+                    <div className="text-sm mt-1">{invoice.orderNumber || "-"}</div>
+                  )}
+                </div>
+
+                <div>
+                  <Label htmlFor="totalAmount">Montant total</Label>
+                  {isEditing ? (
+                    <Input
+                      id="totalAmount"
+                      type="number"
+                      step="0.01"
+                      value={formData.totalAmount}
+                      onChange={(e) => setFormData({ ...formData, totalAmount: e.target.value })}
+                      placeholder="Montant en €"
+                    />
+                  ) : (
+                    <div className="text-sm mt-1">
+                      {invoice.totalAmount 
+                        ? `${parseFloat(invoice.totalAmount as string).toFixed(2)} €`
+                        : "-"}
+                    </div>
+                  )}
+                </div>
+              </CardContent>
+            </Card>
+
+            {/* Info Card */}
+            <Card>
+              <CardHeader>
+                <CardTitle>Informations</CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-2 text-sm">
+                <div className="flex justify-between">
+                  <span className="text-gray-500">Créé le</span>
+                  <span>{new Date(invoice.createdAt).toLocaleDateString("fr-FR")}</span>
+                </div>
+                <div className="flex justify-between">
+                  <span className="text-gray-500">Mis à jour le</span>
+                  <span>{new Date(invoice.updatedAt).toLocaleDateString("fr-FR")}</span>
+                </div>
+                {invoice.exportedAt && (
+                  <div className="flex justify-between">
+                    <span className="text-gray-500">Exporté le</span>
+                    <span>{new Date(invoice.exportedAt).toLocaleDateString("fr-FR")}</span>
+                  </div>
+                )}
+              </CardContent>
+            </Card>
+          </div>
+        </div>
+      </div>
+    </DashboardLayout>
+  );
+}
diff --git a/client/src/pages/Invoices.tsx b/client/src/pages/Invoices.tsx
index f0a91b0..8e75ea9 100644
--- a/client/src/pages/Invoices.tsx
+++ b/client/src/pages/Invoices.tsx
@@ -14,7 +14,8 @@ import {
   TableRow,
 } from "@/components/ui/table";
 import { trpc } from "@/lib/trpc";
-import { Search, FileText, Download } from "lucide-react";
+import { Search, FileText, Download, FileSpreadsheet } from "lucide-react";
+import * as XLSX from 'xlsx';
 import { toast } from "sonner";
 import { useLocation } from "wouter";
 
@@ -22,9 +23,40 @@ export default function Invoices() {
   const [, setLocation] = useLocation();
   const [searchQuery, setSearchQuery] = useState("");
   const [selectedIds, setSelectedIds] = useState<number[]>([]);
+  const [statusFilter, setStatusFilter] = useState<string>("all");
   const { data: invoices, isLoading } = trpc.invoices.list.useQuery();
   const utils = trpc.useUtils();
 
+  const exportExcelMutation = trpc.sftp.exportToExcel.useMutation({
+    onSuccess: (data) => {
+      // Generate Excel file
+      const worksheet = XLSX.utils.json_to_sheet(data.invoices.map(inv => ({
+        'Fournisseur': inv.supplierName,
+        'N\u00b0 Facture': inv.invoiceNumber,
+        'Date': inv.invoiceDate,
+        'N\u00b0 Bon de livraison': inv.deliveryNoteNumber,
+        'N\u00b0 Commande': inv.orderNumber,
+        'Montant': inv.totalAmount,
+        'Score': inv.qualityScore,
+        'Statut export': inv.exportStatus,
+        'Export\u00e9 le': inv.exportedAt,
+        'Cr\u00e9\u00e9 le': inv.createdAt,
+      })));
+      
+      const workbook = XLSX.utils.book_new();
+      XLSX.utils.book_append_sheet(workbook, worksheet, 'Factures');
+      
+      // Download Excel file
+      XLSX.writeFile(workbook, `factures_${new Date().toISOString().split('T')[0]}.xlsx`);
+      
+      toast.success(`${data.invoices.length} facture(s) export\u00e9e(s) en Excel`);
+      setSelectedIds([]);
+    },
+    onError: (error) => {
+      toast.error(error.message || "Erreur lors de l'export Excel");
+    },
+  });
+  
   const exportMutation = trpc.sftp.exportToPdf.useMutation({
     onSuccess: (data) => {
       toast.success(`${data.invoices.length} facture(s) exportée(s) avec succès`);
@@ -46,6 +78,33 @@ export default function Invoices() {
   });
 
   const filteredInvoices = invoices?.filter((inv) => {
+    // Filter by search query
+    if (searchQuery) {
+      const query = searchQuery.toLowerCase();
+      const matchesSearch = inv.supplierName?.toLowerCase().includes(query) ||
+        inv.invoiceNumber?.toLowerCase().includes(query);
+      if (!matchesSearch) return false;
+    }
+    
+    // Filter by export status
+    if (statusFilter !== "all") {
+      if (statusFilter === "exported" && inv.exportStatus !== "exported") return false;
+      if (statusFilter === "not_exported" && inv.exportStatus !== "not_exported") return false;
+      if (statusFilter === "export_error" && inv.exportStatus !== "export_error") return false;
+    }
+    
+    return true;
+  });
+  
+  const statusCounts = {
+    all: invoices?.length || 0,
+    exported: invoices?.filter(inv => inv.exportStatus === "exported").length || 0,
+    not_exported: invoices?.filter(inv => inv.exportStatus === "not_exported").length || 0,
+    export_error: invoices?.filter(inv => inv.exportStatus === "export_error").length || 0,
+  };
+  
+  // Old filter logic (to be removed)
+  const _oldFilteredInvoices = invoices?.filter((inv) => {
     if (!searchQuery) return true;
     const query = searchQuery.toLowerCase();
     return (
@@ -76,12 +135,21 @@ export default function Invoices() {
 
   const handleExport = () => {
     if (selectedIds.length === 0) {
-      toast.error("Veuillez sélectionner au moins une facture");
+      toast.error("Veuillez s\u00e9lectionner au moins une facture");
       return;
     }
     
     exportMutation.mutate({ invoiceIds: selectedIds });
   };
+  
+  const handleExportExcel = () => {
+    if (selectedIds.length === 0) {
+      toast.error("Veuillez s\u00e9lectionner au moins une facture");
+      return;
+    }
+    
+    exportExcelMutation.mutate({ invoiceIds: selectedIds });
+  };
 
   const getExportStatusBadge = (status: string) => {
     switch (status) {
@@ -119,13 +187,22 @@ export default function Invoices() {
             <p className="text-gray-500 mt-1">Gérez toutes vos factures importées</p>
           </div>
           <div className="flex gap-2">
+            <Button
+              onClick={handleExportExcel}
+              disabled={selectedIds.length === 0 || exportExcelMutation.isPending}
+              variant="outline"
+              className="border-green-600 text-green-600 hover:bg-green-50"
+            >
+              <FileSpreadsheet className="w-4 h-4 mr-2" />
+              Excel ({selectedIds.length})
+            </Button>
             <Button
               onClick={handleExport}
               disabled={selectedIds.length === 0 || exportMutation.isPending}
               className="bg-blue-600 hover:bg-blue-700"
             >
               <Download className="w-4 h-4 mr-2" />
-              Exporter ({selectedIds.length})
+              PDF ({selectedIds.length})
             </Button>
             <Button onClick={() => setLocation("/upload")}>
               <FileText className="w-4 h-4 mr-2" />
@@ -148,6 +225,41 @@ export default function Invoices() {
                 />
               </div>
             </div>
+            
+            {/* Status Filters */}
+            <div className="flex gap-2 mb-4">
+              <Button
+                variant={statusFilter === "all" ? "default" : "outline"}
+                onClick={() => setStatusFilter("all")}
+                size="sm"
+              >
+                Tous ({statusCounts.all})
+              </Button>
+              <Button
+                variant={statusFilter === "exported" ? "default" : "outline"}
+                onClick={() => setStatusFilter("exported")}
+                size="sm"
+                className={statusFilter === "exported" ? "bg-green-600 hover:bg-green-700" : ""}
+              >
+                Exportés ({statusCounts.exported})
+              </Button>
+              <Button
+                variant={statusFilter === "not_exported" ? "default" : "outline"}
+                onClick={() => setStatusFilter("not_exported")}
+                size="sm"
+                className={statusFilter === "not_exported" ? "bg-blue-600 hover:bg-blue-700" : ""}
+              >
+                Non exportés ({statusCounts.not_exported})
+              </Button>
+              <Button
+                variant={statusFilter === "export_error" ? "default" : "outline"}
+                onClick={() => setStatusFilter("export_error")}
+                size="sm"
+                className={statusFilter === "export_error" ? "bg-red-600 hover:bg-red-700" : ""}
+              >
+                Erreurs ({statusCounts.export_error})
+              </Button>
+            </div>
 
             {/* Table */}
             {isLoading ? (
@@ -184,7 +296,12 @@ export default function Invoices() {
                             />
                           </TableCell>
                           <TableCell className="font-medium">
-                            {invoice.supplierName || "Inconnu"}
+                            <button
+                              onClick={() => setLocation(`/invoices/${invoice.id}`)}
+                              className="text-blue-600 hover:text-blue-800 hover:underline"
+                            >
+                              {invoice.supplierName || "Inconnu"}
+                            </button>
                           </TableCell>
                           <TableCell>{invoice.invoiceNumber || "-"}</TableCell>
                           <TableCell>
diff --git a/package.json b/package.json
index 56bf3ce..4ce9f54 100644
--- a/package.json
+++ b/package.json
@@ -85,6 +85,7 @@
     "tailwindcss-animate": "^1.0.7",
     "vaul": "^1.1.2",
     "wouter": "^3.3.5",
+    "xlsx": "^0.18.5",
     "zod": "^4.1.12"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5cfe8f9..4c7a483 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -232,6 +232,9 @@ importers:
       wouter:
         specifier: ^3.3.5
         version: 3.7.1(patch_hash=4e16e6ff3fde7d6c1024d3e0c8605dc9eb6afb690d0d49958c2f449091813072)(react@19.2.1)
+      xlsx:
+        specifier: ^0.18.5
+        version: 0.18.5
       zod:
         specifier: ^4.1.12
         version: 4.1.12
@@ -2505,6 +2508,10 @@ packages:
   add@2.0.6:
     resolution: {integrity: sha512-j5QzrmsokwWWp6kUcJQySpbG+xfOBqqKnup3OIk1pz+kB/80SLorZ9V8zHFLO92Lcd+hbvq8bT+zOGoPkmBV0Q==}
 
+  adler-32@1.3.1:
+    resolution: {integrity: sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A==}
+    engines: {node: '>=0.8'}
+
   aria-hidden@1.2.6:
     resolution: {integrity: sha512-ik3ZgC9dY/lYVVM++OISsaYDeg1tb0VtP5uL3ouh1koGOaUMDPpbFIei4JkFimWUFPn90sbMNMXQAIVOlnYKJA==}
     engines: {node: '>=10'}
@@ -2594,6 +2601,10 @@ packages:
   ccount@2.0.1:
     resolution: {integrity: sha512-eyrF0jiFpY+3drT6383f1qhkbGsLSifNAjA61IUjZjmLCWjItY6LB9ft9YhoDgwfmclB2zhu51Lc7+95b8NRAg==}
 
+  cfb@1.2.2:
+    resolution: {integrity: sha512-KfdUZsSOw19/ObEWasvBP/Ac4reZvAGauZhs6S/gqNhXhI7cKwvlH7ulj+dOEYnca4bm4SGo8C1bTAQvnTjgQA==}
+    engines: {node: '>=0.8'}
+
   chai@5.3.3:
     resolution: {integrity: sha512-4zNhdJD/iOjSH0A05ea+Ke6MU5mmpQcbQsSOkgdaUMJ9zTlDTD/GYlwohmIE2u0gaxHYiVHEn1Fw9mZ/ktJWgw==}
     engines: {node: '>=18'}
@@ -2639,6 +2650,10 @@ packages:
       react: ^18 || ^19 || ^19.0.0-rc
       react-dom: ^18 || ^19 || ^19.0.0-rc
 
+  codepage@1.15.0:
+    resolution: {integrity: sha512-3g6NUTPd/YtuuGrhMnOMRjFc+LJw/bnMp3+0r/Wcz3IXUuCosKRJvMphm5+Q+bvTVGcJJuRvVLuYba+WojaFaA==}
+    engines: {node: '>=0.8'}
+
   combined-stream@1.0.8:
     resolution: {integrity: sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==}
     engines: {node: '>= 0.8'}
@@ -2700,6 +2715,11 @@ packages:
     resolution: {integrity: sha512-9IkYqtX3YHPCzoVg1Py+o9057a3i0fp7S530UWokCSaFVTc7CwXPRiOjRjBQQ18ZCNafx78YfnG+HALxtVmOGA==}
     engines: {node: '>=10.0.0'}
 
+  crc-32@1.2.2:
+    resolution: {integrity: sha512-ROmzCKrTnOwybPcJApAA6WBWij23HVfGVNKqqrZpuyZOHqK2CwHSvpGuyt/UNNvaIjEd8X5IFGp4Mh+Ie1IHJQ==}
+    engines: {node: '>=0.8'}
+    hasBin: true
+
   cssesc@3.0.0:
     resolution: {integrity: sha512-/Tb/JcjK111nNScGob5MNtsntNM1aCNUDipB/TkwZFhyDrrE47SOx/18wF2bbjgc3ZzCSKW1T5nt5EbFoAz/Vg==}
     engines: {node: '>=4'}
@@ -3199,6 +3219,10 @@ packages:
     resolution: {integrity: sha512-buRG0fpBtRHSTCOASe6hD258tEubFoRLb4ZNA6NxMVHNw2gOcwHo9wyablzMzOA5z9xA9L1KNjk/Nt6MT9aYow==}
     engines: {node: '>= 0.6'}
 
+  frac@1.1.2:
+    resolution: {integrity: sha512-w/XBfkibaTl3YDqASwfDUqkna4Z2p9cFSr1aHDt0WoMTECnRfBOv2WArlZILlqgWlmdIlALXGpM2AOhEk5W3IA==}
+    engines: {node: '>=0.8'}
+
   fraction.js@4.3.7:
     resolution: {integrity: sha512-ZsDfxO51wGAXREY55a7la9LScWpwv9RxIrYABrlvOFBlH/ShPnrtsXeuUIfXKKOVicNxQ+o8JTbJvjS4M89yew==}
 
@@ -4197,6 +4221,10 @@ packages:
     resolution: {integrity: sha512-qC9iz2FlN7DQl3+wjwn3802RTyjCx7sDvfQEXchwa6CWOx07/WVfh91gBmQ9fahw8snwGEWU3xGzOt4tFyHLxg==}
     engines: {node: '>= 0.6'}
 
+  ssf@0.11.2:
+    resolution: {integrity: sha512-+idbmIXoYET47hH+d7dfm2epdOMUDjqcB4648sTZ+t2JwoyBFL/insLfB/racrDmsKB3diwsDA696pZMieAC5g==}
+    engines: {node: '>=0.8'}
+
   ssh2-sftp-client@12.0.1:
     resolution: {integrity: sha512-ICJ1L2PmBel2Q2ctbyxzTFZCPKSHYYD6s2TFZv7NXmZDrDNGk8lHBb/SK2WgXLMXNANH78qoumeJzxlWZqSqWg==}
     engines: {node: '>=18.20.4'}
@@ -4572,11 +4600,24 @@ packages:
     engines: {node: '>=8'}
     hasBin: true
 
+  wmf@1.0.2:
+    resolution: {integrity: sha512-/p9K7bEh0Dj6WbXg4JG0xvLQmIadrner1bi45VMJTfnbVHsc7yIajZyoSoK60/dtVBs12Fm6WkUI5/3WAVsNMw==}
+    engines: {node: '>=0.8'}
+
+  word@0.3.0:
+    resolution: {integrity: sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA==}
+    engines: {node: '>=0.8'}
+
   wouter@3.7.1:
     resolution: {integrity: sha512-od5LGmndSUzntZkE2R5CHhoiJ7YMuTIbiXsa0Anytc2RATekgv4sfWRAxLEULBrp7ADzinWQw8g470lkT8+fOw==}
     peerDependencies:
       react: '>=16.8.0'
 
+  xlsx@0.18.5:
+    resolution: {integrity: sha512-dmg3LCjBPHZnQp5/F/+nnTa+miPJxUXB6vtk42YjBBKayDNagxGEeIdWApkYPOf3Z3pm3k62Knjzp7lMeTEtFQ==}
+    engines: {node: '>=0.8'}
+    hasBin: true
+
   yallist@3.1.1:
     resolution: {integrity: sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==}
 
@@ -7093,6 +7134,8 @@ snapshots:
 
   add@2.0.6: {}
 
+  adler-32@1.3.1: {}
+
   aria-hidden@1.2.6:
     dependencies:
       tslib: 2.8.1
@@ -7192,6 +7235,11 @@ snapshots:
 
   ccount@2.0.1: {}
 
+  cfb@1.2.2:
+    dependencies:
+      adler-32: 1.3.1
+      crc-32: 1.2.2
+
   chai@5.3.3:
     dependencies:
       assertion-error: 2.0.1
@@ -7244,6 +7292,8 @@ snapshots:
       - '@types/react'
       - '@types/react-dom'
 
+  codepage@1.15.0: {}
+
   combined-stream@1.0.8:
     dependencies:
       delayed-stream: 1.0.0
@@ -7297,6 +7347,8 @@ snapshots:
       nan: 2.24.0
     optional: true
 
+  crc-32@1.2.2: {}
+
   cssesc@3.0.0: {}
 
   csstype@3.1.3: {}
@@ -7788,6 +7840,8 @@ snapshots:
 
   forwarded@0.2.0: {}
 
+  frac@1.1.2: {}
+
   fraction.js@4.3.7: {}
 
   framer-motion@12.23.22(react-dom@19.2.1(react@19.2.1))(react@19.2.1):
@@ -9139,6 +9193,10 @@ snapshots:
 
   sqlstring@2.3.3: {}
 
+  ssf@0.11.2:
+    dependencies:
+      frac: 1.1.2
+
   ssh2-sftp-client@12.0.1:
     dependencies:
       concat-stream: 2.0.0
@@ -9515,6 +9573,10 @@ snapshots:
       siginfo: 2.0.0
       stackback: 0.0.2
 
+  wmf@1.0.2: {}
+
+  word@0.3.0: {}
+
   wouter@3.7.1(patch_hash=4e16e6ff3fde7d6c1024d3e0c8605dc9eb6afb690d0d49958c2f449091813072)(react@19.2.1):
     dependencies:
       mitt: 3.0.1
@@ -9522,6 +9584,16 @@ snapshots:
       regexparam: 3.0.0
       use-sync-external-store: 1.6.0(react@19.2.1)
 
+  xlsx@0.18.5:
+    dependencies:
+      adler-32: 1.3.1
+      cfb: 1.2.2
+      codepage: 1.15.0
+      crc-32: 1.2.2
+      ssf: 0.11.2
+      wmf: 1.0.2
+      word: 0.3.0
+
   yallist@3.1.1: {}
 
   yallist@5.0.0: {}
diff --git a/server/routers.ts b/server/routers.ts
index 333cce9..67623ba 100644
--- a/server/routers.ts
+++ b/server/routers.ts
@@ -424,6 +424,36 @@ export const appRouter = router({
       return { success };
     }),
     
+    exportToExcel: protectedProcedure
+      .input(z.object({ invoiceIds: z.array(z.number()) }))
+      .mutation(async ({ input, ctx }) => {
+        const invoices = await Promise.all(
+          input.invoiceIds.map(id => getInvoiceById(id))
+        );
+        
+        const validInvoices = invoices.filter(
+          inv => inv && inv.userId === ctx.user.id
+        );
+        
+        // Return invoice data for Excel generation on client side
+        return {
+          success: true,
+          invoices: validInvoices.map(inv => ({
+            id: inv!.id,
+            supplierName: inv!.supplierName || '',
+            invoiceNumber: inv!.invoiceNumber || '',
+            invoiceDate: inv!.invoiceDate ? new Date(inv!.invoiceDate).toLocaleDateString('fr-FR') : '',
+            deliveryNoteNumber: inv!.deliveryNoteNumber || '',
+            orderNumber: inv!.orderNumber || '',
+            totalAmount: inv!.totalAmount ? parseFloat(inv!.totalAmount as string) : 0,
+            qualityScore: inv!.qualityScore || 0,
+            exportStatus: inv!.exportStatus || 'not_exported',
+            exportedAt: inv!.exportedAt ? new Date(inv!.exportedAt).toLocaleDateString('fr-FR') : '',
+            createdAt: new Date(inv!.createdAt).toLocaleDateString('fr-FR'),
+          }))
+        };
+      }),
+    
     exportToPdf: protectedProcedure
       .input(z.object({ invoiceIds: z.array(z.number()) }))
       .mutation(async ({ input, ctx }) => {
diff --git a/todo.md b/todo.md
index 489a4c7..368984f 100644
--- a/todo.md
+++ b/todo.md
@@ -86,3 +86,13 @@
 - [x] Ajouter bouton "Exporter" (actif uniquement pour score 100%)
 - [x] Implémenter le téléchargement de PDF pour les factures sélectionnées
 - [x] Valider que seules les factures avec score 100% peuvent être exportées
+
+## Nouvelles fonctionnalités
+- [x] Ajouter des boutons de filtre par statut d'export (Tous/Exportés/Non exportés/Erreurs)
+- [x] Créer route tRPC pour export Excel
+- [x] Créer page InvoiceDetail avec visualisation des métadonnées
+- [x] Ajouter formulaire d'édition manuelle des champs
+- [x] Implémenter la mise à jour des métadonnées
+- [x] Recalculer le score de qualité après édition manuelle
+- [x] Ajouter bouton "Export Excel" dans la page Factures
+- [x] Générer fichier Excel avec toutes les métadonnées