Why Are iPhone Photos HEIC? The Short Answer
Your iPhone saves photos as HEIC because the camera format is set to High Efficiency, the default since iOS 11 (2017). HEIC files take about half the space of JPG at similar quality.
To get JPG instead, go to Settings → Camera → Formats and choose Most Compatible. This changes new photos only. Photos you already have stay HEIC until you convert them.
Why Apple Switched to HEIC in iOS 11
In September 2017, Apple changed the default camera format on every iPhone from JPEG to HEIC with the release of iOS 11. The decision came down to three factors:
- Storage savings — HEIC files are roughly 50% smaller than equivalent JPEGs with no visible quality loss. For a 128 GB iPhone, this effectively doubles the number of photos you can store before running out of space.
- Better quality — HEIC uses the HEVC (H.265) codec, which produces fewer compression artifacts than JPEG's older DCT-based compression. Sky gradients are smoother, fine textures are sharper, and color transitions have less visible banding. Our HEIC vs JPEG comparison puts the two formats side by side on quality, size and support.
- H.265 ecosystem push — Apple uses HEVC for both photos and video. From the A10 Fusion chip (iPhone 7) on, iPhones encode HEVC in hardware, which keeps it fast and power-efficient. Using HEIC for photos was a natural extension of that infrastructure.
Apple made this change silently — no prompt, no opt-in. Every iPhone updated to iOS 11 or later automatically started shooting HEIC. Most iPhone users only discovered this when they tried to open their photos on a Windows PC and saw error messages or blank thumbnails.
High Efficiency vs Most Compatible
iOS offers two camera format modes under Settings → Camera → Formats:
| Setting | Photo Format | Video Format | Trade-off |
|---|---|---|---|
| High Efficiency | HEIC | HEVC (H.265) | Smaller files, 10-bit color, HDR, but limited compatibility |
| Most Compatible | JPEG | H.264 | Universal compatibility, but files are ~2x larger |
High Efficiency is the default on every iPhone. It produces the smallest files with the best technical quality. Most Compatible forces the camera to save as JPEG/H.264, which works everywhere but uses roughly twice the storage.
How to Change iPhone Camera to Shoot JPG
If you want your iPhone to save all future photos as JPEG instead of HEIC, follow these steps:
- Open the Settings app on your iPhone.
- Scroll down and tap Camera.
- Tap Formats.
- Select "Most Compatible" (instead of "High Efficiency").
Important: This setting only affects future photos. All existing HEIC photos in your Camera Roll remain as HEIC. To convert those, see the section on batch conversion below.
After switching, your iPhone camera will save photos as .jpg files and videos as H.264 .mov files. The visual quality for everyday photography is essentially the same — the main difference is file size. A typical 12 MP photo goes from 2–3 MB (HEIC) to 4–6 MB (JPEG).
What Still Saves as HEIC
Most Compatible covers photos from the Camera app. A few files are outside it:
- Apple ProRAW photos — saved as DNG files, not HEIC or JPG.
- Live Photos — the still becomes a JPG; the short video next to it is a separate MOV file.
- Photos taken before the switch — they stay HEIC, and so do HEIC photos you receive from other people.
Screenshots are always saved as PNG regardless of the camera format setting.
Automatic Conversion When Transferring
There is a lesser-known iOS setting that automatically converts HEIC to JPEG when you transfer photos to a Mac or PC via USB cable:
- Open Settings on your iPhone.
- Tap Photos.
- Scroll down to "Transfer to Mac or PC".
- Select "Automatic" (instead of "Keep Originals").
| Setting | What It Does |
|---|---|
| Automatic | Converts HEIC → JPEG and HEVC → H.264 on-the-fly when transferring via USB. The originals on your iPhone remain as HEIC. |
| Keep Originals | Transfers the raw HEIC/HEVC files without conversion. Faster transfer but requires HEIC support on the receiving device. |
This is a convenient middle ground: your iPhone keeps the efficient HEIC format for storage, and the photos are automatically converted to compatible JPEG when you plug the phone into a computer. Note that this only works for USB cable transfers — it does not affect AirDrop, iCloud sync, or email attachments.
What About Existing HEIC Photos?
Changing the camera format to Most Compatible is forward-only — it only affects photos taken after the change. Every HEIC photo already in your Camera Roll stays as HEIC. The same applies to the "Automatic" transfer setting: it converts on-the-fly during USB transfer but does not modify the originals.
If you have already accumulated hundreds or thousands of HEIC photos that you need in JPEG format, you have several options:
- Online converter — Upload HEIC files to CleverUtils (use the widget above or below) and download JPEGs. Works from any device with a web browser, including Safari on your iPhone.
- Copy and paste on iPhone — Select photos in the Photos app, tap Share → Copy Photos, then paste them into a folder in the Files app. The pasted copies are JPG.
- USB transfer with "Automatic" enabled — Connect your iPhone to a Mac or PC and import photos. If the "Automatic" setting is enabled, all HEIC files are converted to JPEG during import.
- Mac Preview — On a Mac, select multiple HEIC files in Finder, open with Preview, then File → Export Selected Images as JPEG.
Should You Keep HEIC or Switch to JPG?
The answer depends on how you use your photos:
| Keep HEIC (High Efficiency) | Switch to JPG (Most Compatible) |
|---|---|
| 2x more photos on same storage | Works everywhere without conversion |
| 10-bit color support | No compatibility issues on Windows/Android |
| HDR metadata preserved | Email, print, upload without extra steps |
| Requires conversion for sharing | Files are ~2x larger |
| Windows/Android may not open | Loses 10-bit color and HDR |
Recommendation: Keep your iPhone on High Efficiency (HEIC) for everyday use. The storage savings are significant, and Apple devices handle HEIC natively. When you need to share photos with non-Apple users, upload to a website, or send to a printing service, convert to JPG at that point. This gives you the best of both worlds — efficient storage on your phone and universal compatibility when sharing.
Batch Convert iPhone HEIC Photos
For a few photos, use the converter above: it converts one file at a time, up to 100 MB each. For dozens or hundreds, use a batch tool such as the Finder Convert Image action on a Mac or a Shortcut on the iPhone.
The conversion preserves all EXIF metadata (GPS location, date/time, camera settings) and uses quality 92 out of 100 for the JPG output, which produces files that are visually identical to the HEIC originals. The only data that cannot be preserved in JPG is HEIC-specific features like depth maps, Live Photo video clips, and HDR tone mapping metadata.
Privacy note: Files uploaded to CleverUtils are encrypted via HTTPS and automatically deleted from our servers within 2 hours. We do not read, analyze, or share your photos.
Why Are My Photos Suddenly HEIC Instead of JPG?
- New or reset iPhone. High Efficiency is the default, so a new phone or a reset brings HEIC back even if you used JPG before.
- Downloads from iCloud or Google Photos. These services keep the original file, so a HEIC photo downloads as HEIC.
- AirDrop and file sharing. Sending to another Apple device usually keeps the HEIC original.
- Transfer setting. With Settings → Photos → Transfer to Mac or PC set to Keep Originals, USB imports arrive as HEIC.
Check Settings → Camera → Formats first. If it says High Efficiency, that is the reason.