Convert Image Format

This function is only available on iOS 15 or later.
  1. Open a viewer or select photos in the thumbnails view.
  2. Tap Actions Button actions button on the bottom toolbar.
  3. Tap Convert > Convert Image Format
  4. Set quality.
  5. Tap Convert button.

A new format image will be saved and the original image will be deleted. If you want to keep the original image, switch on Keep Original.