diff -r 48c4eec2b7e6 -r 8c2e4d02f4ef wp/wp-includes/class-wp-image-editor.php
--- a/wp/wp-includes/class-wp-image-editor.php	Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-includes/class-wp-image-editor.php	Fri Sep 05 18:52:52 2025 +0200
@@ -111,7 +111,7 @@
 	 *     If true, image will be cropped to the specified dimensions using center positions.
 	 *     If an array, the image will be cropped using the array to specify the crop location:
 	 *
-	 *     @type string $0 The x crop position. Accepts 'left' 'center', or 'right'.
+	 *     @type string $0 The x crop position. Accepts 'left', 'center', or 'right'.
 	 *     @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.
 	 * }
 	 * @return true|WP_Error
@@ -240,11 +240,14 @@
 	 * Sets Image Compression quality on a 1-100% scale.
 	 *
 	 * @since 3.5.0
+	 * @since 6.8.0 The `$dims` parameter was added.
 	 *
-	 * @param int $quality Compression Quality. Range: [1,100]
+	 * @param int   $quality Compression Quality. Range: [1,100]
+	 * @param array $dims    Optional. Image dimensions array with 'width' and 'height' keys.
 	 * @return true|WP_Error True if set successfully; WP_Error on failure.
+
 	 */
-	public function set_quality( $quality = null ) {
+	public function set_quality( $quality = null, $dims = array() ) {
 		// Use the output mime type if present. If not, fall back to the input/initial mime type.
 		$mime_type = ! empty( $this->output_mime_type ) ? $this->output_mime_type : $this->mime_type;
 		// Get the default quality setting for the mime type.
@@ -260,11 +263,18 @@
 			 * The WP_Image_Editor::set_quality() method has priority over the filter.
 			 *
 			 * @since 3.5.0
+			 * @since 6.8.0 Added the size parameter.
 			 *
 			 * @param int    $quality   Quality level between 1 (low) and 100 (high).
 			 * @param string $mime_type Image mime type.
+			 * @param array $size {
+			 *     Dimensions of the image.
+			 *
+			 *     @type int $width  The image width.
+			 *     @type int $height The image height.
+			 * }
 			 */
-			$quality = apply_filters( 'wp_editor_set_quality', $default_quality, $mime_type );
+			$quality = apply_filters( 'wp_editor_set_quality', $default_quality, $mime_type, $dims ? $dims : $this->size );
 
 			if ( 'image/jpeg' === $mime_type ) {
 				/**
@@ -318,7 +328,6 @@
 				$quality = 86;
 				break;
 			case 'image/jpeg':
-			case 'image/avif':
 			default:
 				$quality = $this->default_quality;
 		}
@@ -366,26 +375,7 @@
 			$new_ext   = $file_ext;
 		}
 
-		/**
-		 * Filters the image editor output format mapping.
-		 *
-		 * Enables filtering the mime type used to save images. By default,
-		 * the mapping array is empty, so the mime type matches the source image.
-		 *
-		 * @see WP_Image_Editor::get_output_format()
-		 *
-		 * @since 5.8.0
-		 *
-		 * @param string[] $output_format {
-		 *     An array of mime type mappings. Maps a source mime type to a new
-		 *     destination mime type. Default empty array.
-		 *
-		 *     @type string ...$0 The new mime type.
-		 * }
-		 * @param string $filename  Path to the image.
-		 * @param string $mime_type The source image mime type.
-		 */
-		$output_format = apply_filters( 'image_editor_output_format', array(), $filename, $mime_type );
+		$output_format = wp_get_image_editor_output_format( $filename, $mime_type );
 
 		if ( isset( $output_format[ $mime_type ] )
 			&& $this->supports_mime_type( $output_format[ $mime_type ] )
@@ -443,6 +433,7 @@
 	 * Builds an output filename based on current file, and adding proper suffix
 	 *
 	 * @since 3.5.0
+	 * @since 6.8.0 Passing an empty string as $suffix will now omit the suffix from the generated filename.
 	 *
 	 * @param string $suffix
 	 * @param string $dest_path
@@ -450,9 +441,11 @@
 	 * @return string filename
 	 */
 	public function generate_filename( $suffix = null, $dest_path = null, $extension = null ) {
-		// $suffix will be appended to the destination filename, just before the extension.
-		if ( ! $suffix ) {
-			$suffix = $this->get_suffix();
+		// If not empty the $suffix will be appended to the destination filename, just before the extension.
+		if ( $suffix ) {
+			$suffix = '-' . $suffix;
+		} elseif ( '' !== $suffix ) {
+			$suffix = '-' . $this->get_suffix();
 		}
 
 		$dir = pathinfo( $this->file, PATHINFO_DIRNAME );
@@ -472,7 +465,7 @@
 			}
 		}
 
-		return trailingslashit( $dir ) . "{$name}-{$suffix}.{$new_ext}";
+		return trailingslashit( $dir ) . "{$name}{$suffix}.{$new_ext}";
 	}
 
 	/**