The one-paragraph answer
HEIC (High Efficiency Image Container) is an image format that stores photos at roughly half the file size of JPG at equivalent quality. Apple made it the iPhone default in 2017 because halving photo storage on devices selling in the hundreds of millions was worth forcing a format change. The trade: software that hasn't updated (or paid for codec licences) can't read it.
Why HEIC is technically better
- Half the size, same visual quality — modern compression (HEVC-based) versus JPG's 1992-era algorithm.
- Better colour depth: 10-bit colour vs JPG's 8-bit — smoother skies, sunsets, skin tones.
- Bursts and live photos: one HEIC can hold image sequences, depth maps and edit instructions.
- Transparency support (unlike JPG) where needed.
None of that helps if the file won't open where you need it.
Where HEIC fails in practice
- Windows: needs paid HEVC codec extensions from the Microsoft Store for full support — many PCs show a grey box or nothing.
- Email recipients: attach a .heic and there's a decent chance the other side sees an unpreviewable file.
- Web forms: job portals, government sites, CMS platforms and printers frequently accept 'JPG, PNG' — and reject .heic.
- Older software: anything from before ~2017, and plenty updated since.
Keep HEIC or convert? The honest matrix
| Situation | Keep HEIC or convert? |
|---|---|
| Photos staying on your Apple devices / iCloud | Keep — smaller storage, better quality, everything supports it |
| Sending to anyone outside the Apple bubble | Convert to JPG |
| Uploading to websites, portals, printers | Convert to JPG |
| Editing in pro tools (Photoshop etc.) | Either — modern tools read both; convert if your workflow is mixed-OS |
| Archiving originals | Keep HEIC — and convert a copy for sharing |
How to convert HEIC to JPG — your options
- The free way, right here: the free HEIC → JPG converter runs entirely in your browser — the decoder is embedded in the page, so photos never upload. 3 files a day free; orientation comes out right automatically; output JPGs are metadata-free.
- The unlimited way: the €9 download batch-converts whole folders to one zip, offline, forever.
- iPhone 'Most Compatible' setting: makes future photos JPG — bigger files, and it does nothing for the HEICs already in your camera roll.
- macOS Quick Actions: right-click → Quick Actions → Convert Image. Fine for one file on a Mac.
Typical workflow: keep shooting HEIC (better storage), convert the ones you share — how to convert HEIC to JPG →
One more reason conversions here come out clean
Decoding a HEIC and re-encoding a JPG builds a fresh file — which means the output carries no EXIF metadata (camera, GPS, timestamps). For anything you're sharing, that's a feature, not a bug: see what's inside your photos for why metadata-free output matters.