The simplest way to convert to JPEG on iPhone

iPhone saves photos in HEIC format by default, but you can convert them to JPEG directly on your phone without a computer or third-party app. The built-in Photos app lets you export any photo as JPEG in a few taps. This matters because JPEG files open on any device and email service, while HEIC sometimes causes compatibility problems with older devices or Windows computers.

The fastest route is to use the Share menu in Photos, select Mail, and change the format before sending. If you don't want to email the photo, you can use the Files app to convert and save it locally on your iPhone instead.

Key Takeaways

  • iPhone's Photos app can export any photo as JPEG through the Share menu without installing anything extra.
  • Emailing a photo through the Mail app automatically converts HEIC to JPEG, so you can save the email attachment as a JPEG file.
  • The Files app method lets you convert and store JPEG files on your iPhone without sending them anywhere.
  • Converting one photo takes under a minute once you know which menu to open.

Convert to JPEG using the Mail app

Open the Photos app and find the photo you want to convert. Tap the photo to open it full-screen, then tap the Share button (the square with an arrow pointing up, usually in the bottom left corner).

From the share menu, tap Mail. A new email draft will open with your photo attached. Before you send it, look at the bottom of the compose window — you should see a small line of text that says something like "Photo" or shows the file format. Tap that text. A menu will appear asking whether to send the photo in its current format or in a smaller, compatible format. Tap the option that says "Small" or "Compatible" — this converts the file to JPEG automatically.

Now you have two choices. If you want to keep the JPEG file, send the email to yourself, then open your email and read the attachment. If you don't want to actually send the email, you can close it without sending — the conversion still happened, and you can use the Files app method below to save it instead.

Convert to JPEG using the Files app

This method saves the JPEG directly to your iPhone without sending an email. Open the Photos app, find your photo, and tap Share. Scroll down in the share menu and tap Save to Files.

A window will open showing your iPhone's file storage. Choose where you want to save the file — iCloud Drive, On My iPhone, or another location. The filename will appear at the top; you can change it if you want. Tap the filename and add .jpg to the end if it doesn't already have it (for example, change "photo" to "photo.jpg"). Then tap Save.

Your photo is now saved as a JPEG file in the location you chose. You can find it later by opening the Files app, navigating to that folder, and tapping the file to view it or share it again.

Convert multiple photos at once

If you need to convert several photos, you can select them all together. Open Photos and tap Select in the top right corner. Tap each photo you want to convert — a checkmark will appear on each one. Once you've selected all the photos you need, tap Share.

From here, follow either the Mail method or the Files method above. When you use Mail with multiple photos selected, all of them will be attached to the email and converted to JPEG format together. With the Files method, you'll be prompted to save them as a folder or archive, which keeps them organized in one place.

Why your iPhone uses HEIC instead of JPEG

HEIC is Apple's newer photo format that takes up less storage space and keeps better image quality than JPEG at the same file size. This is why iPhone switched to it as the default. However, HEIC files don't open on many Windows computers, older Android phones, or some email services without extra software.

JPEG is older and less efficient, but it works everywhere. Converting to JPEG makes sense when you're sharing photos with people who might not have devices that support HEIC, or when you're uploading to a website that doesn't accept it. If you only share photos within Apple's ecosystem (iPhone to iPhone, or through iCloud), you don't need to convert — HEIC will work fine and save you storage space.

Change your iPhone's default photo format to JPEG

If you find yourself converting photos constantly, you can change your iPhone's default format so it saves new photos as JPEG from the start. Open Settings and go to Camera. Scroll down to Formats and tap it. You'll see two options: High Efficiency (which is HEIC) and Most Compatible (which is JPEG). Tap Most Compatible.

From now on, new photos you take will be saved as JPEG automatically. This uses slightly more storage space than HEIC, but you won't need to convert anymore. Photos you already took in HEIC format will stay that way — this setting only affects new photos going forward.

Troubleshooting conversion problems

If the Share menu doesn't show a format option, your photo might already be in JPEG format. You can check by opening the photo, tapping the three dots (or Info button), and looking at the file details — it will say the format there.

If the Files app method doesn't let you add .jpg to the filename, the file may already be saved as JPEG. Some iPhones also have restrictions on which folders you can save to — if you get an error, try saving to iCloud Drive instead of On My iPhone, or vice versa. If neither method works, restart your iPhone and try again; this fixes most temporary glitches with the Photos or Files apps.

Frequently Asked Questions

Does converting to JPEG reduce photo quality?

JPEG uses compression that slightly reduces quality compared to HEIC, but the difference is usually invisible unless you zoom in very close or print the photo large. For sharing online or emailing, the quality loss is not noticeable. If you need the absolute best quality, keep the original HEIC file and only convert a copy when you need to share it.

Can I convert a screenshot to JPEG the same way?

Yes. Screenshots save as HEIC by default on newer iPhones, so you can convert them using the same Mail or Files method. Open the screenshot in Photos, tap Share, and follow either method above.

What if I want to convert a photo I already emailed to myself?

Open the email, tap and hold the photo attachment, and tap Save Image. This saves it to your Photos app in HEIC format. Then use the Mail or Files method to convert it to JPEG. The attachment itself is already JPEG, but saving it back through Photos converts it again.

Do I need an app to convert photos to JPEG?

No. iPhone's built-in Photos and Files apps handle conversion without downloading anything. Third-party apps exist, but they're not necessary — the methods above are faster and don't require extra storage.

Will converting to JPEG make the file smaller?

Usually yes, but not always by much. HEIC is more efficient, so a HEIC file is often smaller than the same photo in JPEG. However, the difference is usually only a few hundred kilobytes, which doesn't matter for most uses. If file size is critical, HEIC is actually the better choice.