Convert HEIC to JPG on Mac with Preview

If your Mac already opens HEIC photos, you do not need to send them to an online service to produce a JPG. Preview can export an image as JPEG and convert selected files in the same window. Choose a separate output folder and check one copy before processing an entire set.

JPEG and JPG are the same format. Preview calls it "JPEG"; a site requesting "JPG" generally means the same encoding, although it may also require a particular extension or file size.

Before starting: protect originals and choose a destination

Apple documents HEIF support from macOS High Sierra 10.13. Keep your system updated and check that the file really opens in Preview: a .heic extension does not prove that a file is complete or supported.

Keep originals in their folder. Prepare another folder, such as Photos-JPEG, for sharing copies. If your files are in a cloud-synced folder, a local export into that folder can subsequently sync. "Exported on the Mac" does not mean "never uploaded by any service."

Export one HEIC photo as JPEG

These steps follow Apple's Preview guide, including its macOS Tahoe 26 version. Dialog layouts can differ by version.

1. Open the HEIC photo in Preview, then choose File > Export. This is an image export, not a print-to-PDF operation.
2. Choose JPEG in the Format menu. If a desired format is missing, Apple says to hold Option while clicking the menu to display more formats.
3. Adjust the quality slider if needed. Start with high quality and compare the result; no percentage guarantees identical appearance across all photographs.
4. Choose a new name or your Photos-JPEG folder and save. If a dialog offers to replace a file, cancel and check the destination name.
5. Reopen the exported JPEG and compare it with the HEIC before proceeding.

Do not use "Export as PDF" when the destination needs a JPEG image. Renaming the extension in Finder does not convert the file either: choosing the export format changes its encoding.

Convert multiple HEIC files in one window

Batch conversion depends on selecting the sidebar thumbnails, not simply having several windows open.

1. Open the files in a single Preview window. Apple's multiple-files guide explains the settings if each file opens separately.
2. Show the thumbnail sidebar and select the images you want. To select all, focus that list before using Command + A.
3. Use the File menu to export the selected images, choose JPEG in the format options, and select your output folder. The command label and location of the options depend on the Preview version.
4. Check that the output count matches your selection. Inspect several files, including a vertical portrait and a photograph with bright highlights.

Apple specifically recommends opening files in one window, selecting them in the sidebar, and following the export steps. That does not promise unlimited batch size. If the Mac slows down or an image fails, use smaller groups and isolate the problem file. Do not blindly repeat an export into a folder full of same-named copies.

Quality, HDR, and metadata are not guaranteed to survive

JPEG is a lossy copy, even at maximum quality. It is not a replacement for an original when you need to retain all the information in a HEIC photo. Export may alter HDR appearance, color profiles, or metadata. A still-image export is also not a complete backup of a Live Photo or its editing history.

Check dimensions, orientation, and colors. Inspect the copy's information if capture time or location matters. Conversion is not a guaranteed method of removing personal metadata.

If you only need a narrower copy for a form, the Motionix photo resizer can help after export, using an already compatible JPG, PNG, or WebP. Do not submit HEIC assuming this guide adds a decoder to the site. Always check the recipient's requirements: a valid JPEG is not a promise of acceptance.

A browser alternative

For a small batch outside Preview, the Motionix HEIC-to-JPG converter provides JPEG quality controls and ZIP downloads within its displayed limits. Photos are not uploaded. Compare the outputs and retain the originals: this is not a backup of metadata, HDR, or color profiles.

Sources and other devices

These are documented workflows, not a claim of hands-on testing on every Mac.

• Apple: convert image file types in Preview.
• The same guidance for macOS Tahoe 26.
• Apple: HEIF support and conversion.

To prepare a copy from the phone, see the iPhone HEIC guide. If a PC recipient cannot open the original, the Windows guide separates codecs from JPEG export.