HEIC (High Efficiency Image Container) is the default photo format on iPhones since iOS 11. It stores roughly half as many bytes as JPEG for the same quality but is not universally supported.

Are my photos uploaded?

No. Decoding happens in your browser via a WebAssembly decoder. Nothing leaves your device.

Does it preserve EXIF data?

The pixel data is preserved, but the canvas re-encode strips EXIF metadata. Use a dedicated EXIF tool if you need to preserve location, camera and timestamp tags.

Why is the first conversion slow?

The HEIC WebAssembly decoder is ~2 MB and is downloaded once, then cached by the browser. Subsequent conversions are fast.

Will the JPG be bigger than the HEIC?

Almost always, yes — HEIC's HEVC-based compression is roughly twice as efficient as JPEG.

Are bursts and Live Photos supported?

Each HEIC file is treated as a single image — the still frame is converted. Live Photo motion data is not embedded in the JPG.

HEIC 转 JPG

将 iPhone HEIC 照片转为通用的 JPEG，可批量上传，无需注册。

HEIC / HEIF file(s) Quality 90

Drop one or more HEIC files from your iPhone or Mac to begin.

How to convert HEIC to JPG

Pick one or more .heic or .heif files (drag-and-drop or the iOS photo picker both work).
Pick a JPEG quality. 90 is photo-grade; 75 is web-grade.
Press Convert to JPG — the WebAssembly decoder loads on first use.
Download each converted JPEG.

Common use cases

Sharing iPhone photos with Windows users — many older Windows versions cannot open HEIC.
Uploading to forums and CMSes that accept only JPEG / PNG.
Email attachments for recipients on older devices.

常见问题

What is HEIC?: HEIC (High Efficiency Image Container) is the default photo format on iPhones since iOS 11. It stores roughly half as many bytes as JPEG for the same quality but is not universally supported.
Are my photos uploaded?: No. Decoding happens in your browser via a WebAssembly decoder. Nothing leaves your device.
Does it preserve EXIF data?: The pixel data is preserved, but the canvas re-encode strips EXIF metadata. Use a dedicated EXIF tool if you need to preserve location, camera and timestamp tags.
Why is the first conversion slow?: The HEIC WebAssembly decoder is ~2 MB and is downloaded once, then cached by the browser. Subsequent conversions are fast.
Will the JPG be bigger than the HEIC?: Almost always, yes — HEIC's HEVC-based compression is roughly twice as efficient as JPEG.
Are bursts and Live Photos supported?: Each HEIC file is treated as a single image — the still frame is converted. Live Photo motion data is not embedded in the JPG.

Last updated: 2026-05-20 By jarvisbox