How to Convert HEIC to JPG on Mac in Bulk
To convert HEIC to JPG on a Mac in bulk, select the photos in Finder, right-click, choose Quick Actions, then Convert Image, and pick JPEG. That converts the whole selection locally. Preview can also export one image at a time. Metadata such as location may be kept, so strip it before sharing.
Finder's Convert Image action
Select many HEIC files, right-click, choose Quick Actions, then Convert Image. Choose JPEG, pick a size, and the converted copies appear in the same folder.
Preview for one-offs
Open the image, choose File, then Export, and select JPEG. Use the quality slider to balance size and sharpness.
A dedicated batch tool
Paperlane for Mac is a free native macOS app that converts HEIC images on your Mac. It converts whole folders with a quality setting and optional metadata removal, and a recipe on a watch folder converts new iPhone photos as they arrive.
Limits
JPEG cannot store 10-bit color or Live Photo motion, so converting loses those. Keep the HEIC originals if you may need them.
Frequently asked questions
Does converting to JPG lose quality?
JPEG is lossy. A high quality setting keeps differences hard to see, but it is not identical.
Is location data kept?
Often yes. Remove metadata before posting photos publicly.