diff --git a/server/routers.ts b/server/routers.ts
index 7460ce8..b2f278b 100644
--- a/server/routers.ts
+++ b/server/routers.ts
@@ -1136,6 +1136,8 @@ export const appRouter = router({
         // Get export folder from settings
         const settings = await getImportSettingsByUser(ctx.user.id);
         const exportFolder = settings?.exportFolder;
+        const exportFolderType = (settings as any)?.exportFolderType || 'local';
+        const isSharePoint = exportFolderType === 'sharepoint';
         
         // Load service→signature associations
         const serviceAssociations = await getServiceSignaturesByUser(ctx.user.id);
@@ -1163,18 +1165,22 @@ export const appRouter = router({
           });
         }
         
-        // Create export folder if it doesn't exist
-        try {
-          await fs.mkdir(exportFolder, { recursive: true });
-        } catch (error) {
-          console.error('Error creating export folder:', error);
-          throw new TRPCError({ 
-            code: "INTERNAL_SERVER_ERROR", 
-            message: `Impossible de créer le dossier d'export: ${exportFolder}` 
-          });
+        // Create export folder if not SharePoint
+        if (!isSharePoint) {
+          try {
+            await fs.mkdir(exportFolder, { recursive: true });
+          } catch (error) {
+            console.error('Error creating export folder:', error);
+            throw new TRPCError({ 
+              code: "INTERNAL_SERVER_ERROR", 
+              message: `Impossible de créer le dossier d'export: ${exportFolder}` 
+            });
+          }
         }
         
-        // Copy PDFs to export folder
+        console.log(`[exportToPdf] Mode: ${exportFolderType}, dossier: ${exportFolder}, ${invoices.length} facture(s)`);
+        
+        // Copy/upload PDFs to export folder
         const copiedFiles: string[] = [];
         const errors: string[] = [];
         const STORAGE_BASE_PATH = process.env.STORAGE_BASE_PATH || path.join(process.cwd(), "storage");
@@ -1261,38 +1267,88 @@ export const appRouter = router({
                     });
                     
                     const signedPdfBytes = await pdfDoc.save();
-                    await fs.writeFile(destPath, signedPdfBytes);
-                    copiedFiles.push(destPath);
                     console.log(`[Export] Signature apposée pour ${serviceName} sur ${filename}`);
+                    if (isSharePoint) {
+                      const { uploadToSharePoint } = await import('./sharepoint');
+                      console.log(`[exportToPdf] Upload SharePoint: ${filename}`);
+                      const spResult = await uploadToSharePoint(
+                        { tenantId: (settings as any)?.azureTenantId || '', clientId: (settings as any)?.azureClientId || '', clientSecret: (settings as any)?.azureClientSecret || '', sharepointUrl: exportFolder },
+                        Buffer.from(signedPdfBytes), filename
+                      );
+                      if (!spResult.success) throw new Error(`SharePoint: ${spResult.error}`);
+                      console.log(`[exportToPdf] Upload SharePoint réussi: ${spResult.webUrl}`);
+                      copiedFiles.push(spResult.webUrl || filename);
+                    } else {
+                      await fs.writeFile(destPath, signedPdfBytes);
+                      copiedFiles.push(destPath);
+                    }
                   } else {
-                    // Signature not found, copy without signature
-                    try { await fs.copyFile(sourcePath, destPath); } catch (_) {
+                    // Signature not found, upload/copy without signature
+                    let pdfBuf: Buffer;
+                    try { pdfBuf = await fs.readFile(sourcePath); } catch (_) {
                       const fu = invoice!.fileUrl; if (!fu) throw new Error('PDF introuvable');
                       const au = fu.startsWith('/') ? `${process.env.APP_BASE_URL||`http://localhost:${process.env.PORT||3000}`}${fu}` : fu;
                       const rb = await fetch(au); if (!rb.ok) throw new Error(`HTTP ${rb.status}`);
-                      await fs.writeFile(destPath, Buffer.from(await rb.arrayBuffer()));
+                      pdfBuf = Buffer.from(await rb.arrayBuffer());
+                    }
+                    if (isSharePoint) {
+                      const { uploadToSharePoint } = await import('./sharepoint');
+                      const spResult = await uploadToSharePoint(
+                        { tenantId: (settings as any)?.azureTenantId || '', clientId: (settings as any)?.azureClientId || '', clientSecret: (settings as any)?.azureClientSecret || '', sharepointUrl: exportFolder },
+                        pdfBuf, filename
+                      );
+                      if (!spResult.success) throw new Error(`SharePoint: ${spResult.error}`);
+                      copiedFiles.push(spResult.webUrl || filename);
+                    } else {
+                      try { await fs.copyFile(sourcePath, destPath); } catch (_) { await fs.writeFile(destPath, pdfBuf); }
+                      copiedFiles.push(destPath);
                     }
-                    copiedFiles.push(destPath);
                   }
                 } catch (sigError: any) {
                   console.warn(`[Export] Impossible d'apposer la signature: ${sigError.message}. Copie sans signature.`);
-                  try { await fs.copyFile(sourcePath, destPath); } catch (_) {
+                  let pdfBuf: Buffer;
+                  try { pdfBuf = await fs.readFile(sourcePath); } catch (_) {
                     const fu = invoice!.fileUrl; if (!fu) throw new Error('PDF introuvable');
                     const au = fu.startsWith('/') ? `${process.env.APP_BASE_URL||`http://localhost:${process.env.PORT||3000}`}${fu}` : fu;
                     const rb = await fetch(au); if (!rb.ok) throw new Error(`HTTP ${rb.status}`);
-                    await fs.writeFile(destPath, Buffer.from(await rb.arrayBuffer()));
+                    pdfBuf = Buffer.from(await rb.arrayBuffer());
+                  }
+                  if (isSharePoint) {
+                    const { uploadToSharePoint } = await import('./sharepoint');
+                    const spResult = await uploadToSharePoint(
+                      { tenantId: (settings as any)?.azureTenantId || '', clientId: (settings as any)?.azureClientId || '', clientSecret: (settings as any)?.azureClientSecret || '', sharepointUrl: exportFolder },
+                      pdfBuf, filename
+                    );
+                    if (!spResult.success) throw new Error(`SharePoint: ${spResult.error}`);
+                    copiedFiles.push(spResult.webUrl || filename);
+                  } else {
+                    try { await fs.copyFile(sourcePath, destPath); } catch (_) { await fs.writeFile(destPath, pdfBuf); }
+                    copiedFiles.push(destPath);
                   }
-                  copiedFiles.push(destPath);
                 }
               } else {
-                // No signature association, copy as-is
-                try { await fs.copyFile(sourcePath, destPath); } catch (_) {
+                // No signature association, upload/copy as-is
+                let pdfBuf: Buffer;
+                try { pdfBuf = await fs.readFile(sourcePath); } catch (_) {
                   const fu = invoice!.fileUrl; if (!fu) throw new Error('PDF introuvable');
                   const au = fu.startsWith('/') ? `${process.env.APP_BASE_URL||`http://localhost:${process.env.PORT||3000}`}${fu}` : fu;
                   const rb = await fetch(au); if (!rb.ok) throw new Error(`HTTP ${rb.status}`);
-                  await fs.writeFile(destPath, Buffer.from(await rb.arrayBuffer()));
+                  pdfBuf = Buffer.from(await rb.arrayBuffer());
+                }
+                if (isSharePoint) {
+                  const { uploadToSharePoint } = await import('./sharepoint');
+                  console.log(`[exportToPdf] Upload SharePoint sans signature: ${filename}`);
+                  const spResult = await uploadToSharePoint(
+                    { tenantId: (settings as any)?.azureTenantId || '', clientId: (settings as any)?.azureClientId || '', clientSecret: (settings as any)?.azureClientSecret || '', sharepointUrl: exportFolder },
+                    pdfBuf, filename
+                  );
+                  if (!spResult.success) throw new Error(`SharePoint: ${spResult.error}`);
+                  console.log(`[exportToPdf] Upload SharePoint réussi: ${spResult.webUrl}`);
+                  copiedFiles.push(spResult.webUrl || filename);
+                } else {
+                  try { await fs.copyFile(sourcePath, destPath); } catch (_) { await fs.writeFile(destPath, pdfBuf); }
+                  copiedFiles.push(destPath);
                 }
-                copiedFiles.push(destPath);
               }
               
               // Update export status