Save space in Photos.app by converting photos from RAW to JPEG (95% quality).
- Create a Service in Automator.app that runs this script.
- Select one ore more photos in Photos.app and run the Service.
- Script export selected photos and resave them with inernal macOS tool with 95% quality settings.
- Reimport files into Photos.app.
- Move exported files from disk to trash.
- Now, you can delete RAW originals from Photos.app.