diff --git a/src/Encoder/Xls.php b/src/Encoder/Xls.php
index 3648e56..73cb67e 100644
--- a/src/Encoder/Xls.php
+++ b/src/Encoder/Xls.php
@@ -130,7 +130,7 @@ class Xls implements EncoderInterface {
 
       // Set the width of every column with data in it to AutoSize.
       if (empty($this->getConfig()->get('xls_serialization_autosize'))) {
-        $this->setColumnsAutoSize($sheet);
+        $this->setColumnsAutoSize($sheet, $context);
       }
 
       // Set rows to auto-height.
@@ -185,6 +185,8 @@ class Xls implements EncoderInterface {
         }
       }
 
+      \Drupal::moduleHandler()->invokeAll('xls_serialization_encoder_xls_encode_alter', [&$xls, $context, $data, $format]);
+
       $writer = IOFactory::createWriter($xls, $this->xlsFormat);
 
       // @todo utilize a temporary file perhaps?
@@ -408,11 +410,8 @@ class Xls implements EncoderInterface {
    * @param \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $sheet
    *   The worksheet to set the column width to AutoSize for.
    */
-  protected function setColumnsAutoSize(Worksheet $sheet) {
-    foreach ($sheet->getColumnIterator() as $column) {
-      $column_index = $column->getColumnIndex();
-      $sheet->getColumnDimension($column_index)->setAutoSize(TRUE);
-    }
+  protected function setColumnsAutoSize(Worksheet $sheet, $context) {
+    \Drupal::moduleHandler()->invokeAll('xls_serialization_encoder_xls_set_columns_autosize_alter', [&$sheet, $context]);
   }
 
   /**