RollmarkHEIC vs JPEG on iPhone: which camera format should you use?
Use High Efficiency (HEIC) unless something you rely on cannot open it. It stores the same picture in a smaller file than JPEG, which saves space. Choose Most Compatible (JPEG) only if an older app, printer or website rejects HEIC. The switch is in Settings, Camera, Formats.
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Where do I choose between HEIC and JPEG?
The setting changes only new photos and videos. Photos already in your library keep the format they were saved in.
- Open Settings and tap Camera.
- Tap Formats.
- Choose High Efficiency for HEIF/HEVC files or Most Compatible for JPEG and H.264.
- Take a test photo and share it to the app you care about to see how it behaves.
What is the difference?
JPEG dates from the early 1990s and opens on nearly everything. HEIC is a newer container for images built on the High Efficiency Image File Format. Wikipedia's article on HEIF says the format was designed to produce smaller files at similar quality and to carry extras like depth information. Apple adopted it with iOS 11 in 2017.
| High Efficiency (HEIC) | Most Compatible (JPEG) | |
|---|---|---|
| File size | Smaller for similar quality | Larger |
| Support | Apple devices, current PCs with codecs, most modern apps | Nearly everything |
| Extras | Depth data, multiple images, wider color | Limited |
| Video pairing | HEVC video | H.264 video |
| Best when | Storage is tight | Sharing with old software |
How much space does HEIC save?
The saving is often described as close to half for the same visible quality, although it depends on the scene. Over a library of 10,000 photos, that can be the gap between 20 GB and 40 GB. You see it on a phone that is almost full: a cleanup helps once, and the format helps with every shot you take afterward. The guide on why photos take up so much space puts the format next to resolution and video.
What happens when I share a HEIC photo?
iOS usually converts photos to a compatible format when you send them to apps that need it, such as many email and web uploads. Messages and AirDrop between Apple devices keep the original. If a site rejects a photo, try sharing it from Photos with the options menu in the share sheet and choose the most compatible format. When you connect to a computer, there is a transfer setting in Photos to convert on the way out, and it is worth checking if a program fails to open files.
Will old files open on a PC?
Many current PCs can open HEIC when the right codec is installed, and many apps handle it directly. Older software and some printers or print kiosks do not. If you plan to hand photos to a lab, a print-at-home service or an older computer, test one file first and switch the camera format only if it fails.
Should I convert my existing library to JPEG?
Usually no. Conversion makes bigger files, adds work and gains nothing for viewing on an iPhone. Convert a photo only when you have to send it somewhere that refuses HEIC, and let the share sheet do it. Leave your library as it is.
What about videos?
The same Formats setting controls video. High Efficiency uses HEVC, and Most Compatible uses H.264. HEVC files are smaller at the same quality, and the saving matters more for video than for photos because the files are bigger. The same rule applies: use High Efficiency unless a tool you use cannot play it.
Does the format change how I sort photos?
No. Sorting depends on dates and your decisions, not on the format. In Rollmark, an iPhone app in development, the deck shows photos, videos and Live Photos from your library whatever their format. The kind badge on a card says Video, Screenshot or Live. Sizes on cards are estimates from pixel dimensions and video length, so the format does not change what you see there. The month-by-month sorting page covers the flow.
What is the Transfer to Mac or PC setting?
Settings, Photos has a section at the bottom called Transfer to Mac or PC. Automatic converts photos to a compatible format when you connect to a computer, and Keep Originals sends the HEIC files untouched. If a program fails to open photos you copied by cable, switch to Automatic and copy again.
What format are screenshots?
iPhone screenshots are saved as PNG, not HEIC, which is why a screenshot can be larger than a photo of the same pixel count. The Formats setting does not change them. If your library has thousands of screenshots, they take space no matter which camera format you pick, and clearing them is a separate job covered in deleting all screenshots on iPhone.
Will I see a difference in quality?
On a phone screen, almost never. JPEG at a good quality setting and HEIC look alike at normal viewing size. Differences show up in heavy edits, deep zooms on gradients such as skies, and in the extra data HEIC can carry, like depth for Portrait mode. If you shoot for fun and share in chats, pick by storage and compatibility, and do not worry about the picture. If you print large, test a file from each setting and compare the prints.
How do I decide in 30 seconds?
- Do you send photos to old software or print kiosks often? Choose Most Compatible.
- Is your phone short on space? Choose High Efficiency.
- Do you edit on a computer? High Efficiency works with current editors, and you can set Transfer to Mac or PC to Automatic.
- Do you not know? Stay on High Efficiency, which is the default on current iPhones.
Frequently asked questions
Is HEIC better than JPEG?
For storage, yes, because it makes smaller files at similar quality. For compatibility, JPEG is better because nearly everything opens it.
How do I switch the iPhone camera to JPEG?
Open Settings, Camera, Formats and choose Most Compatible. New photos are saved as JPEG.
Does changing the setting affect old photos?
No. Only photos taken after the change use the new format.
Why can't a website open my HEIC photo?
Some sites do not accept HEIC. Share the photo from the share sheet with the most compatible option, or switch the camera setting.
Is HEIC the same as HEIF?
HEIF is the file format standard, and HEIC is the file extension Apple uses for HEIF images.