HEIC vs JPG: Which Should You Use, and When to Convert

Your iPhone takes a photo, you send it to a friend on Windows, and they reply that it won't open. The culprit is a three-letter format most people never chose on purpose: HEIC. Apple switched to it years ago, yet the rest of the world still runs on JPG, so the two formats end up in a quiet tug-of-war every time you move a picture off your phone. This guide explains what actually separates HEIC and JPG, which one is right for a given job, and when it is worth converting.

Same photo, two formats: HEIC saves space on your iPhone, JPG opens everywhere.

Everything below can be done privately with our HEIC to JPG tool right in your browser, without uploading a single photo.

What is HEIC?

HEIC (High Efficiency Image Container) is the format iPhones and iPads have saved photos in since iOS 11. It is built on the HEVC video codec, and its headline trick is compression: it stores a photo at roughly half the size of a JPG at the same visible quality. It also holds things JPG cannot, including richer colour depth, transparency, and even several frames in one file, which is how Live Photos and depth effects work behind the scenes.

In other words, HEIC is a genuinely modern, efficient format. The only real problem with it is that most of the world has not caught up.

What is JPG?

JPG (often written JPEG) is the format the internet grew up on. It has been the default for digital photos since the 1990s, and that long history is its superpower: there is virtually no device, app, browser, printer or upload form on earth that cannot open a JPG. It is a lossy format, meaning it discards a little detail to stay small, but for everyday photos that loss is invisible to the eye.

JPG will almost never win a technical comparison against HEIC. What it wins, every single time, is compatibility.

HEIC vs JPG: the differences that matter

File size. HEIC is the clear winner. The same photo is usually about half the size as a HEIC, which is why switching to it freed up so much space on iPhones. A JPG of the same picture is larger.

Quality at the same size. HEIC again. Byte for byte it keeps more detail, so at a matched file size it looks a little cleaner, especially in shadows and gradients.

Compatibility. JPG wins, and it is not close. HEIC opens reliably on recent Apple devices and newer software, but it stumbles on older Windows PCs, many Android phones, plenty of websites, and a surprising number of upload forms. JPG opens on essentially everything.

Features. HEIC can store transparency, wider colour depth, and multiple images in one file. JPG cannot. For most people this rarely matters, but it is why your iPhone can do depth and Live Photo tricks that a plain JPG never could.

Editing and software support. Mainstream editors on a Mac handle HEIC fine. Older or cheaper software, and a lot of web tools, still expect a JPG. If a program refuses your photo, converting to JPG almost always fixes it.

When to keep HEIC

Stick with HEIC when:

• You are staying inside Apple's world: iPhone, iPad, Mac and iCloud all read it natively.
• You want to save storage. HEIC roughly halves the space your photo library takes, which adds up fast over thousands of pictures.
• The photo is not going anywhere that might choke on it.

If a picture is only ever going to live on your own Apple devices, there is no reason to convert it.

When to convert to JPG

Convert to JPG the moment a photo has to leave your phone for the wider world:

• Sending it to someone on Windows or Android.
• Uploading to a website, a job portal, or a visa or passport form.
• Attaching it to an email, since several mail clients mishandle HEIC.
• Printing at a shop or on an older printer.
• Opening it in software that does not read HEIC.

The simple rule: HEIC for storing, JPG for sharing. If your iPhone pictures already refuse to open on a PC, here is why iPhone photos won't open on Windows and how to fix it.

Does converting HEIC to JPG lose quality?

Technically a tiny amount, because you are moving from one compressed format to another. In practice it is invisible for normal viewing, sharing and printing. The converted JPG will be a bigger file than the HEIC was, since JPG is the less efficient format, but it will look the same to your eye.

If you care about keeping pristine originals, the best habit is to leave the HEIC masters on your phone and convert copies to JPG whenever you need to send one out. You keep the efficient archive and get a universal file to share.

How to convert without uploading your photos

You do not need Apple software or a risky website that wants your pictures on its server. Our HEIC to JPG tool runs entirely in your browser: drop in one photo or a whole batch, download JPGs, and nothing is ever uploaded. It is free, there is no watermark and no sign-up.

Convert a HEIC to a universal JPG in the browser, with nothing uploaded.

For the full step-by-step on Windows, Mac, Android and iPhone, see our complete guide to converting HEIC to JPG.

So, which should you use?

You do not actually have to pick one format forever. The smartest approach uses both: let your iPhone keep shooting HEIC so your storage lasts, and convert a JPG copy whenever you share, upload, email or print. That way you get HEIC's efficiency on your own device and JPG's universal compatibility everywhere else.

If you would rather not think about it at all, you can tell your iPhone to shoot JPG from the start under Settings, Camera, Formats, Most Compatible. You will use more storage, but every photo will open everywhere by default.