You copy photos from an iPhone to a Windows laptop, a work portal or an online form, and suddenly nothing opens. The files end in .HEIC, the upload button rejects them, and the preview shows a blank icon. This is not a corrupted file — it's a modern image format that many systems still don't handle well.
Here is what HEIC actually is, why Apple uses it, and the quickest ways to get a normal JPG when you need one.
What is a HEIC file?
HEIC stands for High Efficiency Image Container. It is Apple's implementation of the HEIF standard (High Efficiency Image File Format), which stores images compressed with the same technology used for HEVC (H.265) video.
Apple switched the iPhone camera's default format to HEIC with iOS 11 in 2017. The reason is simple: storage. A HEIC photo is typically around half the size of a JPG of similar visual quality, which roughly doubles how many photos fit on a phone and in iCloud.
HEIC also supports features JPG doesn't:
- 16-bit colour instead of 8-bit, which reduces banding in skies and gradients.
- Transparency (an alpha channel).
- Multiple images in one file, which is how Live Photos and burst shots are stored.
- Depth maps, which power Portrait mode's adjustable background blur.
HEIC vs JPG at a glance
| HEIC | JPG | |
|---|---|---|
| File size at similar quality | Roughly 40–50% smaller | Baseline |
| Colour depth | Up to 16-bit | 8-bit |
| Transparency | Yes | No |
| Opens on Windows without add-ons | Not always | Yes |
| Accepted by websites and forms | Often not | Almost always |
| Opens in every email client and browser | No | Yes |
In short: HEIC is the better format for storing photos; JPG is the better format for sharing them.
Which devices can open HEIC?
- iPhone, iPad and Mac: Native support since iOS 11 and macOS High Sierra.
- Windows 10 and 11: Support depends on installed codecs. The Photos app can open HEIC once the HEIF Image Extensions and HEVC Video Extensions are installed from the Microsoft Store (the HEVC extension may be a small paid download on some PCs).
- Android: Many recent phones can view HEIC in the gallery app, but support varies by manufacturer.
- Web browsers: Most browsers cannot display HEIC images directly on a web page, which is why upload forms and websites usually reject them.
- Office apps, online forms, government and job portals: Frequently JPG or PNG only.
How to convert HEIC to JPG
Option 1: Convert in your browser
The fastest way when you have files on a computer is an online converter. With our HEIC to JPG tool:
- Drag one or several HEIC files onto the page.
- Adjust the quality slider if you like — 85–90% is visually indistinguishable from the original for nearly all photos.
- Convert, then download each image or grab them all as a single ZIP file.
HEIC decoding needs a specialised engine that browsers don't include, so this particular tool sends the image to our server over an encrypted connection, converts it, and deletes both the upload and the result immediately afterwards. Nothing is stored or kept.
Need a different output? HEIC to PNG produces a lossless image (larger, but no quality loss — useful for editing or screenshots), and HEIC to WebP gives you a small, modern file that is ideal for websites.
Option 2: Let the iPhone convert when you share
iOS converts photos to JPG automatically in many sharing situations — for example when you email a photo or attach it in some apps. For transfers to a computer over a cable, check Settings → Photos → Transfer to Mac or PC and choose Automatic. The iPhone will then convert photos to a compatible format as they are copied.
Option 3: Export from Photos on a Mac
On a Mac, open the photo in the Photos app and choose File → Export → Export 1 Photo, then pick JPEG as the format. Preview can also do this through File → Export.
How to make your iPhone take JPG photos instead
If you constantly need JPGs, you can change the camera format:
- Open Settings → Camera → Formats.
- Choose Most Compatible instead of High Efficiency.
From then on, new photos are saved as JPG (and videos as H.264). The trade-off is that each photo takes roughly twice the storage. Existing HEIC photos are not converted. Some features that depend on high-efficiency formats, such as certain high-resolution or high-frame-rate video modes, may also become unavailable.
For most people, the better approach is to keep shooting in HEIC and convert only the photos you need to share.
Which format should you convert to?
- JPG — for email, social media, documents, upload forms and anything where compatibility matters most.
- PNG — when you plan to edit the image further, need transparency, or want zero additional quality loss.
- WebP — for websites and blogs; the files are small and every modern browser supports them. Our guide to JPG vs PNG vs WebP goes deeper on choosing.
Tips for the best results
- Convert once, from the original. Every conversion to a lossy format discards a little detail. Converting HEIC → JPG → WebP loses more than HEIC → WebP directly.
- Check the orientation. Photos store their rotation as metadata. If an image appears sideways after conversion in an older app, fix it with Rotate Image.
- Shrink before you upload. A 12-megapixel photo is far larger than most websites need. After converting, run it through Compress Image or resize it to save bandwidth.
- Mind location data. Phone photos can contain GPS coordinates in their metadata. If privacy matters, check what you are sharing before posting images publicly.
Frequently asked questions
Does converting HEIC to JPG reduce quality?
Technically yes, because JPG is a lossy format with less colour depth. At a quality setting of 85–90%, though, the difference is not visible in normal viewing. If you need a perfect copy, convert to PNG instead.
Why are my converted JPGs bigger than the HEIC files?
That's expected. HEIC compresses more efficiently than JPG, so the same photo needs more bytes in JPG form. Lowering the quality slider slightly (to around 80%) or compressing afterwards will bring the size down.
Can I convert Live Photos?
A Live Photo is a still image plus a short video clip. Converting the HEIC gives you the still frame only.
The bottom line
HEIC is a genuinely better format for storing photos, and there is no reason to give it up. When you need to share an image with a device or website that doesn't understand it, convert just that photo to JPG (or PNG or WebP) — it takes a few seconds and the result works everywhere.