How to compress multiple images at once

Prepare the batch before you start

Gather only images that need similar treatment. If some require a lot of quality and others only have to meet a small limit, it is better to split them into two batches so as not to apply too aggressive settings to all of them.

Choose quality or target size

Common quality is useful when you want a consistent look. Target size per image is most practical when a form or platform sets a specific limit for each file.

Processes sequentially

A good batch processor doesn't try to decode all the giant photos at the same time. Luna4 works one by one to reduce the risk of your browser or phone running out of memory.

Check the files with the greatest savings

The total percentage is for reference, but some images can save much more than others. Preview important cases and check text, faces, edges, and fine details.

Download individually or in ZIP

If you only need to fix one image, download it separately. When the entire batch is ready, the ZIP allows you to group the results into a single download without changing the internal format of each image.