Why do iPhone photos show up as HEIC?

iOS High Efficiency Image Format saves space versus JPEG. Many Windows apps, CMS fields, and email clients still expect `.jpg`. This tool re-encodes the pixels to JPEG locally.

Is my Camera Roll uploaded?

No. Conversion uses a WebAssembly decoder in this tab. Close the tab to drop the file from memory.

Live Photos and bursts?

You convert one HEIC/HEIF still at a time. Live Photo motion pairs and burst extras are not exported as video or extra frames here.

What if conversion fails in Chrome?

Some HEIF variants (10-bit, unusual codecs) fail in the decoder. Try another export from Photos, or Safari, which can often display HEIC natively. Max file size is 15 MB.

Utill.net

HEIC 转 JPG

iPhone 照片

在浏览器中将 HEIC/HEIF 转为 JPEG。文件不会上传。

此转换仅在您的浏览器中运行，不会上传任何内容。

拖放 HEIC/HEIF 照片，或在下方选择

浏览文件

这个工具是什么？

An in-browser HEIC → JPG converter for iPhone stills. Drop a .heic / .heif file, wait for the local decoder, then download a JPEG. Nothing is sent to a server.

It is not a general image compressor (use Compress image) and not a Base64 encoder (use Image to Base64).

常见用途

Send an iPhone photo to a Windows PC or Slack that rejects HEIC
Prepare a JPEG for a CMS, printer, or government form that only accepts JPG
Keep a shareable copy without opening Photos on a Mac

如何使用

Drag a HEIC/HEIF from Finder, Explorer, or your phone (AirDrop / cable).
Wait for the preview. Conversion can take a few seconds on large 12 MP shots.
Download JPG. Files never leave the device.

示例

Input	Notes
`IMG_1234.HEIC` from Camera Roll	Typical iOS still; output `IMG_1234.jpg`.
`.heif` from another camera	Same pipeline if the decoder supports that brand.
15 MB+ HEIC	Rejected — export a smaller crop in Photos first.
JPEG renamed to `.heic`	Fails; the bytes are not HEIF.

实践中的常见误区

Decoder limits: not every HEIF profile (especially 10-bit HDR) converts. That is a library limit, not an upload error.
Color: JPEG is 8-bit sRGB-ish; wide-gamut Display P3 shots can look slightly less vivid after conversion.
We do not strip or preserve all EXIF; treat this as a visual export, not an archival clone.

参考资料

最后审阅: 2026-08-30

常见问题

Why do iPhone photos show up as HEIC?: iOS High Efficiency Image Format saves space versus JPEG. Many Windows apps, CMS fields, and email clients still expect `.jpg`. This tool re-encodes the pixels to JPEG locally.
Is my Camera Roll uploaded?: No. Conversion uses a WebAssembly decoder in this tab. Close the tab to drop the file from memory.
Live Photos and bursts?: You convert one HEIC/HEIF still at a time. Live Photo motion pairs and burst extras are not exported as video or extra frames here.
What if conversion fails in Chrome?: Some HEIF variants (10-bit, unusual codecs) fail in the decoder. Try another export from Photos, or Safari, which can often display HEIC natively. Max file size is 15 MB.