If you have an iPhone, your photos are probably saved as HEIC files — and you have probably hit a moment where something only accepts JPG. Here is what the two formats actually are, and how to decide which to keep.
What each format is
JPG (JPEG) is the universal photo format from 1992. Practically everything opens it, which is exactly why it endures.
HEIC is Apple’s container for images encoded with HEVC (H.265), the same compression family as modern video. It is newer, smarter, and far less universally supported.
| JPG | HEIC | |
|---|---|---|
| Released | 1992 | 2015 |
| Compression | JPEG (DCT) | HEVC / H.265 |
| Typical file size | Baseline | ~50% smaller |
| Color depth | 8-bit | Up to 10-bit+ |
| Transparency | No | Yes |
| Compatibility | Universal | Limited |
Quality and file size
HEIC’s headline advantage is efficiency: it stores roughly the same visual quality in about half the file size. Its 10-bit color also means smoother gradients — skies and shadows show less banding than 8-bit JPG. For a phone shooting thousands of photos, that storage saving is the whole reason Apple made it the default.
The catch: compatibility
JPG’s one decisive win is that everything opens it — every browser, OS, printer, and web upload form going back decades. HEIC support is still patchy on Windows, many web apps, and older devices. That is the entire reason “HEIC to JPG” is one of the most-searched conversions on the web.
Which should you use?
- Keep HEIC when you stay inside the Apple ecosystem and want to save space.
- Convert to JPG when you need to upload, email, print, or share with someone on Windows/Android — anywhere maximum compatibility matters.
- Archiving? Keep the HEIC original (it holds more data) and export a JPG copy only when a specific task needs it.
Because both are lossy, avoid round-tripping repeatedly (HEIC → JPG → HEIC → …); each re-encode sheds a little quality. Convert once, from the original, for the destination you need.
What HEIC actually is
HEIC is not a brand-new image idea — it is a still picture stored using HEVC (H.265), the same modern video compression used for 4K streaming, wrapped in the HEIF container. That is why it is so much smaller than JPG: it inherits twenty years of compression advances that the 1990s-era JPEG format never had. The container can also hold more than one image, which is how iPhones tuck the frames of a Live Photo, depth maps, and edits alongside the main shot in a single .heic file. The cost of all that cleverness is the compatibility gap — playing back HEVC requires a licensed decoder, which is exactly what older and non-Apple systems often lack.
HEIC, WebP and AVIF
HEIC is not the only modern format trying to replace JPG. WebP and AVIF chase the same goal — much smaller files at the same quality — but they were built for the open web and are supported directly in browsers, where HEIC generally is not. In practice: HEIC is what your iPhone captures; AVIF or WebP is what a website should serve; and JPG remains the universal fallback that opens anywhere. If you are publishing photos online rather than just storing them, converting HEIC straight to AVIF or WebP often gives a smaller, more compatible result than JPG. The broader comparison is covered in PNG vs JPEG vs WebP vs AVIF.
Frequently asked questions
Why does my iPhone save photos as HEIC?
Apple defaults to HEIC because it stores the same quality in roughly half the space, saving storage and iCloud bandwidth. You can switch to JPG in Settings → Camera → Formats → Most Compatible.
Is converting HEIC to JPG lossy?
Yes, slightly — both are lossy formats, and re-encoding adds a small amount of generational loss. For everyday photos it is visually unnoticeable. Keep the HEIC original if you may need to re-edit.
Does converting upload my photo anywhere?
Not on Utilities Bunker. The HEIC↔JPG conversion runs entirely in your browser — your image never leaves your device.
Why won’t my HEIC photo open on Windows or Android?
HEIC support is still patchy outside Apple devices. Windows needs an extra codec from the Microsoft Store, and many older Android phones and web apps cannot read it at all. That incompatibility is the main reason to convert to JPG before sharing a photo widely.
Will I lose photo quality if I convert HEIC to JPG?
You lose a tiny amount because JPG re-compresses the image, but at high quality it is not visible to the eye. The bigger trade-off is file size: the JPG will usually be larger than the HEIC for the same look. Convert from the original HEIC, not from an already-converted copy, to keep quality highest.
Should I shoot in HEIC or JPG?
Shoot HEIC if you mostly stay in the Apple ecosystem and want to save space; shoot JPG (Most Compatible) if you frequently share photos to non-Apple devices or older software. You can always convert HEIC to JPG later, so keeping the smaller HEIC original is a reasonable default.