jpg画質一括変換 � �qU �� �qU preferences.rulerUnits = Units.PIXELS; var JPG_QUALITY = 100; var files; var dst; var defaultQuality = checkQualityValue(prompt("デフォルト画質（0～100）", 70)); JPG_QUALITY = defaultQuality; var folderName = Folder.selectDialog("フォルダを選択してください"); if(folderName != null) { openFolder(folderName); } function openFolder(path) { var folder = new Folder(path); var files = folder.getFiles()
