photo_camera HEIC to JPG Converter star

What HEIC Actually Is

HEIC (High Efficiency Image Container) is not a new image format so much as a wrapper: it stores a photo encoded with HEVC (H.265), the same video compression standard used for 4K streaming, applied to a single still frame instead of a video sequence. HEVC's prediction techniques squeeze out redundancy far more aggressively than JPEG's older DCT-based scheme, which is why Apple switched to it starting with iOS 11 in 2017 — a HEIC photo typically runs about half the file size of a JPEG at equivalent visual quality, which adds up fast across a 200-gigabyte camera roll.

The catch is ecosystem support, not quality. HEVC decoding requires either hardware or software licensed for the format, and outside Apple's own devices, support has been inconsistent: most Windows machines, many Android phones, most web upload forms and the majority of retail photo-printing kiosks either cannot open a HEIC at all or handle it unreliably. JPEG, despite being three decades old, is decodable everywhere without exception — so converting HEIC to JPEG trades some file size back for universal compatibility.

HEIC containers can also carry more than a flat photo: a Live Photo's short video, a portrait-mode depth map, or multiple exposure brackets can all live inside one HEIC file. None of that extra data has anywhere to go in a JPEG, which only ever stores one flat image — so converting is a one-way trip that keeps the picture but discards whatever made the container more than a picture.

What to Keep in Mind

• Quality loss from conversion is minor at typical settings — re-encoding to JPEG at 90%+ quality is visually indistinguishable from the HEIC source for ordinary photos, though repeated compress-decompress cycles (HEIC → JPEG → recompress) will compound loss over time.
• Live Photo motion, portrait depth maps and any embedded HDR gain-map data do not survive the conversion — only the single flat frame JPEG supports carries over.
• EXIF metadata such as camera model and shooting settings usually transfers, but privacy-sensitive fields like GPS location are sometimes stripped by conversion tools by design — worth checking if you specifically need location data preserved.
• Prevention beats conversion: setting an iPhone to Settings → Camera → Formats → "Most Compatible" captures JPEG directly going forward, avoiding the need to convert new photos at all — this tool is for the HEIC backlog already on your device.