Batch convert png to jpg on mac without losing quality?

For small amount of PNG to JPG conversion on Mac, the Preview app is a pretty choice out there.

Step 1: Make sure you have placed the PNG images you need to convert in the same folder so that it will be easier to follow. For example, you can place them all in a new folder on your desktop.

Step 2: After opening the Preview application, click on the File menu, select the Open option, and in the file selection dialog box, locate the folder where the PNG images are stored. Select all the PNG images you want to convert, and then click the “Open” button.

If you have imported more than one image at a time and need to confirm or adjust the selection range, you can view the list of imported images in the sidebar of the “Preview” application. Select the specific image you want to convert by clicking on the image thumbnail, or hold down the Command key to make multiple selections.

Step 3: After selecting the PNG images you want to convert, click on the “File” menu and select the “Export” option. Make the following settings in the pop-up “Export” dialog box:

Save Location: Choose the path to the folder where you want to save the converted JPG images in the “Save Location” drop-down menu. You can choose desktop, other disk partition or customized folder.

File Format: Choose “JPEG” in the “Format” drop-down menu. This will specify the format of the exported images as JPG.

Adjust Parameters (Optional): According to your needs, you can also adjust some other parameters, such as the “Quality” option, by dragging the slider to set the quality of the JPG image, the higher the value, the better the quality of the image, but the file size will be increased accordingly; The “Resolution” option can be used to adjust the resolution of the picture.

After finishing the settings: click “Save” button, then “Preview” application will batch convert .png to .jpg in mac according to the parameters you set, and save them to the folder you specified.