Convert HEIC to JPG on iPhone (Free, No App)

If you have ever AirDropped a photo to a Windows laptop and watched the recipient stare at a file their computer cannot open, you have hit the HEIC problem. iPhone has been saving photos as .heic since iOS 11. The format is efficient, roughly half the file size of JPG at the same visible quality, but it is also Apple-flavored, which means anything outside the Apple ecosystem tends to choke on it. A photo you can preview instantly on your phone shows up as a useless icon on the other end.

This walkthrough is from NxtTools, the mobile utility app built by Const Agility, LLC in Houston, Texas. There are three honest ways to get JPGs out of an iPhone, and we will cover all three in order of effort, including the case where you do not need NxtTools at all. The on-device Image Tools in NxtTools come into play when you want control over a single conversion: a quality slider, a live preview, a choice of output format, and the original left untouched, all without anything leaving your phone.

TL;DR

Going forward: Settings → Camera → Formats → Most Compatible flips iPhone to JPG capture. It does not touch photos already in your camera roll.
A photo you are about to send: share via the iOS share sheet to Mail, Messages, or a Windows or Android destination, and iOS converts HEIC to JPG on the way out.
A photo you want control over: open it in NxtTools Image Tools, choose Compress, set the output format to JPEG, and save. Runs on-device, no account, no upload, and the original HEIC stays put.
HEIC exists because it is half the file size of JPG. JPG persists because it opens on every device made in the last 30 years.

Why iPhone saves photos as HEIC

HEIC is Apple's file extension for the HEIF format, a 2015 container that uses HEVC compression under the hood. The trade-off is compatibility. Windows 10 and 11 can open HEIC after a free codec install, but many users never have. Older Macs running pre-2017 macOS cannot open it at all. Most web upload forms (job applications, government portals, insurance claim uploaders, older banking sites) only accept JPG. WhatsApp and iMessage handle HEIC fine because they convert it server-side; email attachments and direct file shares to non-Apple recipients usually do not.

That is the problem you are solving when you Google "how do I change HEIC to JPG on iPhone." Either the recipient cannot open the file, or an upload form is rejecting it.

Option 1: Make every new photo a JPG (the Settings toggle)

If you have not taken the photo yet, the fix takes about ten seconds.

Open Settings.
Tap Camera.
Tap Formats.
Pick Most Compatible (the other choice, High Efficiency, is HEIC).

From that moment on, every photo your iPhone captures saves as JPG. The trade-off is real: at the same quality, JPG files are roughly twice the size of HEIC, so your camera roll and your iCloud storage will grow faster. If you rarely share photos outside Apple devices, leaving it on High Efficiency makes sense; if you are constantly sending photos to a Windows colleague, a print shop, or an upload form, Most Compatible removes the friction at the source.

What this toggle does not do is convert any photo already in your camera roll. Every existing HEIC stays HEIC. For those, you need one of the next two options.

Option 2: Let iOS auto-convert on share (no app needed)

iOS has a quiet feature most people never notice: when you share a HEIC photo to a destination that does not understand it, the system converts to JPG on the way out. The original stays HEIC in your camera roll; the recipient gets a JPG.

The two reliable triggers:

Flip the Transfer-to-Mac-or-PC toggle. AirDrop itself only goes Apple-to-Apple, but iOS has a separate setting for cross-platform shares. Open Settings → Photos, scroll to Transfer to Mac or PC, and pick Automatic. With that on, photos handed off through the share sheet to a Windows PC, an upload form, or any non-Apple destination land as JPG instead of HEIC.
Attach to Mail. Open the Photos app, pick the photo, tap Share, choose Mail, and send. The attached file is a JPG. The same applies to most messaging apps where you attach through the Photos share sheet; the file arrives as JPG.

This is the right tool when you are about to send a photo and do not care about the details: the system decides the quality, and you never see the JPG before it goes out. What it never gives you is a copy you can keep, a quality setting you control, or a preview of the result.

Option 3: Convert with control in NxtTools (on-device, file by file)

The share-sheet trick hands the conversion to iOS and gives you no say in it. When the photo matters (a portfolio shot a client asked for as JPG, a scanned document going into a portal with a quality requirement, a picture you want to keep a JPG copy of), you want to see the result before you commit to it.

NxtTools' Image Tools convert HEIC to JPG one file at a time, entirely on your phone. Nothing uploads to a server, no copy lands in a cloud you do not control, and no account is needed. There is no separate "Convert" button. The conversion happens through the Compress action, which writes the photo out in whatever format you choose and lets you set the quality on the way.

The flow:

Install NxtTools from the App Store.
Tap Image Tools on the home screen and pick the .heic photo from Photos, Files, or a share-sheet hand-off. Image Tools opens one image at a time.
Tap the three-dots menu and choose Compress. NxtTools opens a sheet with a Format chooser and a Quality slider.
Set Format to JPEG. If you only want the format change without shrinking the photo much, keep the Quality slider high, around 90.
Save the JPG, or hand it straight to Mail, Drive, Messages, or another app via the share sheet.

The reason to do it here instead of letting the share sheet decide is the Before / After preview. As you move the Quality slider, NxtTools shows the new file size and the original side by side, so you can confirm the JPG still looks right and decide for yourself whether you want a near-lossless copy or a smaller one. Format is your call too: JPEG for maximum compatibility, or PNG and WEBP if the destination supports them. A Live Photo flattens to a regular JPG of the still frame, since a JPG cannot carry the motion component, but that is a JPG limitation, not an NxtTools one.

The original HEIC stays exactly where it is, so you keep the smaller HEIC for the storage savings and hand off the JPG copy. If you came here from the photo compression walkthrough, this is the same Compress sheet pointed at a different goal: there you push the slider down to shrink the file; here you keep it high and switch the format to JPEG.

Image Tools is one of NxtTools' on-device tools: no sign-up, no daily cap, no watermark, just one small banner ad. No NxtTools tool requires an account today; sign-up exists but only unlocks customer support.

When NxtTools is not the right fit

Honest call-outs so this does not read like a sales pitch.

You are about to send a single photo and don't care about the details. The Mail or share-sheet trick is faster than opening any app; iOS does the conversion for you, and for a one-off send that is plenty.
You have a true back-catalog of hundreds of HEICs to convert at once. NxtTools works one file at a time, on purpose: the win here is control and privacy per photo, not bulk throughput. For a folder of hundreds, a desktop tool is faster. On Windows, CopyTrans HEIC handles a folder in one pass; on macOS, Preview converts a multi-selection via File → Export Selected Images.
You need scripted or profile-specific conversion. A command-line tool like ImageMagick gives you batch automation and color-profile control NxtTools does not.
The photos already left your phone. Once they are on a computer, convert them there rather than syncing them back to mobile just to run a phone app.

NxtTools wins when the photo is on your phone, you want to see and set the result rather than hand it to a black box, and you would rather the conversion never touch a server. The same install also gives you a document scanner, PDF tools, a signature pad, and QR Bundles, so the next time you need to scan a contract or shrink a PDF, the app is already there.

FAQ

How do I convert HEIC to JPG on iPhone?

Three options work on a stock iPhone. Open Settings, tap Camera, tap Formats, and pick Most Compatible — every future photo captures as JPG. For existing photos, the iOS share sheet auto-converts HEIC to JPG when you send to a non-Apple destination. For control over a specific photo, open it in NxtTools Image Tools, choose Compress, set the format to JPEG, and save. That path runs on-device and keeps the original untouched.

Will switching iPhone to Most Compatible convert my existing HEIC photos?

No. The Settings toggle only affects new photos you take going forward. Existing HEIC files in your camera roll stay HEIC until you convert them. For the back catalog, use the share-sheet auto-conversion when you send a photo somewhere, or open a photo in an app like NxtTools and export it as JPG one file at a time.

Why does iPhone save photos as HEIC instead of JPG?

HEIC is the file extension Apple uses for the HEIF container, a newer image format that compresses photos roughly twice as efficiently as JPG at the same visible quality. The trade-off is compatibility. Windows, older Macs, many web uploaders, and most messaging apps outside the Apple ecosystem still expect JPG. HEIC saves storage; JPG opens anywhere.

Does converting HEIC to JPG lose quality?

Every JPG export is a lossy re-encode, so a tiny quality drop is unavoidable in theory. In practice, at a high quality setting the difference is invisible at normal viewing sizes — the file gets larger and a fraction less crisp. A tool with a before/after preview lets you confirm the JPG still looks right before you save it. If the photo is going to a person, an upload form, or a Windows machine, the trade is worth it.

Get NxtTools

Image Tools is one of NxtTools' free on-device tools. The HEIC-to-JPG conversion runs entirely on your phone through the Compress action: a quality slider, a format chooser, and a before/after preview, with no account and no cloud upload. The same install also gives you a document scanner, PDF tools, a signature pad, and QR Bundles, so if you came for the photo conversion, the next thing you need is already there.

iPhone & iPad — App Store
Mac (Apple Silicon, M1 and up) — Mac App Store (same iPad app, installs natively as a desktop application; Intel Macs are not supported via this path)
Android — Google Play