Why Do My iPhone Photos Save as HEIC Instead of JPG?

iPhones default to HEIC (High-Efficiency Image Container) because it stores photos at roughly 50% of a JPEG's size at equivalent quality. iOS handles it invisibly, but shared to non-Apple devices HEIC often fails to open. Use Zro7 HEIC → JPG to convert locally in the browser.

What HEIC actually is

• HEIC is the container; HEVC (H.265) is the codec inside it.
• It supports multi-image (Live Photos, bursts), depth maps, and HDR — features JPEG can't touch.
• Same image at q80: JPEG ≈ 2.4 MB, HEIC ≈ 1.1 MB.

Where HEIC breaks

1. Android below 10 without a HEIC codec pack.
2. Older Windows without the HEIF Image Extension.
3. Web forms and CMSs that only accept image/jpeg.
4. Print shops that reject anything not JPEG/TIFF.

Three ways to stop iPhone from saving HEIC

1. Settings → Camera → Formats → Most Compatible. Switches new photos to JPEG. Cost: ~2× disk usage.
2. Settings → Photos → Transfer to Mac or PC → Automatic. Converts on transfer only.
3. Keep the setting on High Efficiency and convert on demand with Zro7.

Local conversion vs 'free HEIC converter' sites

• Upload sites — Your camera roll → their server. Personal photos = privacy hazard.
• Zro7 (local) — libheif WASM runs in your browser; nothing is sent.
• Bonus: Zro7 handles batches (drop 50 files at once).

Steps to convert

1. Open HEIC → JPG.
2. Drop one or many .heic files.
3. Pick quality (85 is a safe default).
4. Download the JPEGs or the whole batch as a ZIP.

Updated December 26, 2026 · Zro7 editorial team.