What Is HEIC, and Why Convert It to JPG?

HEIC is a HEIF container file that Apple adopted as the iPhone's default photo format in iOS 11, using the HEVC codec to fit roughly JPG-level quality into about half the file size. Compatibility is the catch: Windows, Android, and older web services do not ship the codec, so the files refuse to open. Convert anything you plan to send or upload to JPG.

If you have moved iPhone photos to a computer or sent them to someone, you may have hit a file ending in '.HEIC' that simply wouldn't open. HEIC is the photo format recent iPhones use by default. It looks great, but it still doesn't open everywhere.

This guide explains what HEIC is, why Apple uses it, and why you so often need to turn it into a JPG.

What are HEIC and HEIF?

HEIC is Apple's photo flavor of a container format called HEIF (High Efficiency Image Format). The key is right there in the name: high efficiency. It can store the same quality at roughly half the size of a JPG, which saves space on your device.

Apple switched the iPhone's default photo format to HEIC starting with iOS 11. So unless you changed a setting, most photos from a reasonably recent iPhone are HEIC.

The upside: small files, great quality

HEIC's advantages are clear.

Smaller files than JPG at the same quality — saves storage space
Can hold richer color (higher bit depth)
Can pack multiple images into one file, supporting features like Live Photos
Can carry extras like transparency and metadata

The problem: compatibility

Despite all those upsides, conversion is often necessary because of compatibility. HEIC is relatively new, so older Windows PCs, some Android devices, many websites, document editors, and upload forms either fail to open it or reject the upload. JPG, by contrast, has been an effectively universal standard for decades.

That is why you so often see 'it looks fine on my phone, but the person I sent it to can't open it.' When you don't know the recipient's setup, JPG is the safest choice.

What to know before converting

When you turn HEIC into JPG you gain universal compatibility, but keep two things in mind. First, JPG is lossy, so the conversion can drop quality very slightly (usually not noticeable). Second, JPG can't carry HEIC's richer color information or features like Live Photos. For ordinary sharing and uploads, neither difference is a real problem.

Converting safely

Switching's HEIC-to-JPG conversion runs entirely in your browser, so your photos are never uploaded to a server. Even files you'd rather not post online — family or personal photos — can be turned into JPG and made to open on any device or site, without leaving your computer.

Frequently asked questions

Are HEIC and HEIF different things?

HEIF is the name of the container specification; HEIC is a file holding an HEVC-compressed image inside that container. Because Apple uses the .heic extension, the two are used almost interchangeably in practice.

Why does only Apple use this format?

The HEVC codec carries patent licensing that makes it awkward for every operating system and browser to bundle freely. That same friction is why Google pushed WebP and AVIF instead, and why HEIC is essentially absent from the web.

Is HEIC really higher quality than JPG?

At the same file size, yes: HEVC compresses more cleverly and packs more detail into the same bytes. Both are lossy formats though, so converting a HEIC to JPG gives that advantage away.

What happens to my original when I convert?

A browser-based converter only reads the original and writes a separate new file, so the original stays untouched. If storage is the concern, check the converted copy first and then clear out the originals.