diff --git a/src/wp-includes/media.php b/src/wp-includes/media.php
index a0e7ef9c6c..260db26cac 100644
--- a/src/wp-includes/media.php
+++ b/src/wp-includes/media.php
@@ -1843,6 +1843,17 @@ function wp_filter_content_tags( $content, $context = null ) {
 				$filtered_image = wp_img_tag_add_loading_attr( $filtered_image, $context );
 			}
 
+			/**
+			 * Filters an img tag within the content for a given context.
+			 *
+			 * @since 6.0.0
+			 *
+			 * @param string $filtered_image Full img tag with attributes that will replace the source img tag.
+			 * @param string $context        Additional context, like the current filter name or the function name from where this was called.
+			 * @param int    $attachment_id  The image attachment ID. May be 0 in case the image is not an attachment.
+			 */
+			$filtered_image = apply_filters( 'wp_content_img_tag', $filtered_image, $context, $attachment_id );
+
 			if ( $filtered_image !== $match[0] ) {
 				$content = str_replace( $match[0], $filtered_image, $content );
 			}
diff --git a/tests/phpunit/tests/media.php b/tests/phpunit/tests/media.php
index 5d92d9718b..88a402e298 100644
--- a/tests/phpunit/tests/media.php
+++ b/tests/phpunit/tests/media.php
@@ -2293,6 +2293,17 @@ EOF;
 		$this->assertSame( $img, wp_filter_content_tags( $img ) );
 	}
 
+	/**
+	 * @ticket 55347
+	 */
+	public function test_wp_filter_content_tags_has_filter() {
+		$filter = new MockAction();
+		add_filter( 'wp_content_img_tag', array( &$filter, 'filter' ) );
+		$img_tag_1 = get_image_tag( self::$large_id, '', '', '', 'medium' );
+
+		wp_filter_content_tags( $img_tag_1 );
+		$this->assertSame( 1, $filter->get_call_count() );
+	}
 	/**
 	 * @ticket 33641
 	 * @ticket 34528