diff --git a/src/wp-includes/media.php b/src/wp-includes/media.php
index d318a275a9607..3f204f1e5727a 100644
--- a/src/wp-includes/media.php
+++ b/src/wp-includes/media.php
@@ -6417,6 +6417,7 @@ function wp_high_priority_element_flag( $value = null ): bool {
  */
 function wp_get_image_editor_output_format( $filename, $mime_type ) {
 	$output_format = array(
+		'image/jpeg'          => 'image/webp',
 		'image/heic'          => 'image/jpeg',
 		'image/heif'          => 'image/jpeg',
 		'image/heic-sequence' => 'image/jpeg',
@@ -6426,8 +6427,8 @@ function wp_get_image_editor_output_format( $filename, $mime_type ) {
 	/**
 	 * Filters the image editor output format mapping.
 	 *
-	 * Enables filtering the mime type used to save images. By default HEIC/HEIF images
-	 * are converted to JPEGs.
+	 * Enables filtering the mime type used to save images. By default JPEG images
+	 * are converted to WebP and HEIC/HEIF images are converted to JPEGs.
 	 *
 	 * @see WP_Image_Editor::get_output_format()
 	 *
@@ -6437,7 +6438,8 @@ function wp_get_image_editor_output_format( $filename, $mime_type ) {
 	 *
 	 * @param string[] $output_format {
 	 *     An array of mime type mappings. Maps a source mime type to a new
-	 *     destination mime type. By default maps HEIC/HEIF input to JPEG output.
+	 *     destination mime type. By default maps JPEG input to WebP output
+	 *     and HEIC/HEIF input to JPEG output.
 	 *
 	 *     @type string ...$0 The new mime type.
 	 * }