Why does my iPhone save photos as HEIC instead of JPG?

Apple made HEIC the default in iOS 11 (2017) because it stores photos at roughly half the file size of JPG without a visible quality loss. With iPhone cameras producing larger images every year, HEIC let Apple keep storage tiers usable for longer and sped up iCloud Photos backups.

Does HEIC actually look better than JPG?

At the same file size, yes — HEIC retains more detail and supports 16-bit color and HDR data that JPG can't store. But for everyday viewing at normal resolutions, a high-quality JPG looks essentially identical to most people.

How much storage does HEIC actually save?

Apple's own figures, and most independent tests, put it at roughly 50% smaller than an equivalent-quality JPG. On a 1,000-photo library, that can be several gigabytes of difference — meaningful on a 64GB or 128GB iPhone, or for anyone paying for iCloud storage.

Can I make my iPhone take JPG photos instead of HEIC?

Yes. Go to Settings > Camera > Formats and choose "Most Compatible." New photos will be saved as JPG (and video as H.264) instead of HEIC, trading some storage efficiency for guaranteed compatibility everywhere.

If I switch to JPG, do my old HEIC photos change too?

No. The camera format setting only affects new photos taken after you change it. Existing HEIC photos already on your iPhone or in iCloud stay as HEIC unless you convert them individually.

Why Does iPhone Use HEIC? Apple's Reasoning Explained

The Short Answer

Apple switched the iPhone's default photo format to HEIC with iOS 11 in 2017 for one core reason: storage. HEIC stores photos at roughly half the file size of JPG, at the same visual quality, by using newer compression technology built for video rather than 1990s-era still images. Everything else — HDR support, Live Photos, faster backups — follows from that same efficiency gain.

Four Reasons Apple Made the Switch

Storage Savings

HEIC files are roughly 50% smaller than JPG at equivalent quality, so a fixed-size iPhone or iCloud plan holds twice as many photos.

Burst and Live Photos

HEIC's container can hold multiple related images — the still frames behind a Live Photo, or a burst sequence — in a single, efficiently compressed file.

HDR and Wide Color

HEIC supports 16-bit color depth and HDR data that JPG's 8-bit format can't represent, matching what modern iPhone camera sensors capture.

Faster Backups

Smaller files mean faster iCloud Photos syncing and less cellular and Wi-Fi bandwidth used backing up a camera roll.

The Storage Problem Apple Was Solving

In 2017, base iPhone storage still started at 32GB, and camera resolution, Live Photos, Portrait mode, and burst shooting were all generating far more data per shot than a few years earlier. JPG, designed in the early 1990s for far smaller images, couldn't keep up efficiently. Apple needed a format that compressed better without asking users to notice a quality drop, and HEIC — built on HEVC video compression — delivered exactly that.

How Much Space Does HEIC Actually Save?

Roughly 50% smaller than an equivalent-quality JPG, in most real-world testing. A photo that takes 4MB as a JPG might take 2MB as a HEIC, with no visible difference side by side. Multiply that across a camera roll with thousands of photos, and the savings add up to real gigabytes — often enough to avoid paying for a larger iCloud storage plan.

It's Not Just About File Size

HEIC's container format also supports things JPG was never built for: 16-bit color depth and HDR data that match what modern iPhone sensors capture, and the ability to bundle multiple related images — like the still frames behind a Live Photo — into one file instead of several. Smaller, richer files also mean faster iCloud Photos syncing, since there's simply less data to upload and download.

The Tradeoff: Compatibility

The cost of all that efficiency is compatibility. HEVC decoding requires a licensed codec that Windows, most of the web, and many Android phones don't include by default, which is why a HEIC photo can look fine on an iPhone and refuse to open everywhere else. For the platform-specific fixes, see our guides on opening HEIC on Windows and opening HEIC on Android.

How to Switch Your iPhone Back to JPG

If the compatibility tradeoff isn't worth it for you, open Settings > Camera > Formats and select "Most Compatible." New photos will be saved as JPG (and video as H.264) from then on. This only affects photos taken after the change — anything already on your iPhone or in iCloud stays HEIC unless you convert it separately.

For existing HEIC photos, our HEIC to JPG converter handles the conversion entirely in your browser, with no upload required. If you'd rather keep a lossless copy, try HEIC to PNG instead, or use our HEIC Viewer to check what's inside a file before deciding whether to convert it at all. To see exactly how the two formats compare side by side, read our HEIC vs JPG guide.