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What Is HEIC and Should You Convert It to JPEG?

2 min read

What Is HEIC?

HEIC (High Efficiency Image Container) is the file format Apple introduced in iOS 11 (2017) as the default format for iPhone photos. It stores images using HEVC (H.265) compression — the same algorithm used to compress high-quality video.

The main benefit: HEIC photos are approximately 50% smaller than JPEG at the same visual quality. An iPhone 15 photo that would be 8–10 MB as JPEG is 4–5 MB as HEIC.

Technical Advantages Over JPEG

  • Better compression: 50% smaller at equal visual quality
  • Higher colour depth: 10-bit and 12-bit colour (vs JPEG's 8-bit), enabling HDR
  • Transparency support: HEIC supports alpha channels; JPEG does not
  • Multi-image: HEIC can store a burst sequence, Live Photo frames, and depth maps in one file
  • No generation loss: Lossless editing is possible without re-encoding

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The Compatibility Problem

Despite the technical advantages, HEIC has one major problem: it doesn't work everywhere.

  • Windows: Not supported natively. Requires "HEIF Image Extensions" from the Microsoft Store
  • Web: No browser (Chrome, Firefox, Safari, Edge) displays HEIC images in HTML
  • Social media: Instagram, Facebook, and Twitter convert HEIC to JPEG automatically, but the upload process may fail or produce lower quality
  • Older software: Photoshop versions before CS6 require a plugin; Lightroom added support in 2018

Should You Convert Your iPhone Photos to JPEG?

Keep HEIC if:

  • Your photos stay within the Apple ecosystem (iPhone → Mac → iCloud → Apple TV)
  • Storage space is a priority
  • You process photos in modern Lightroom or Capture One (both support HEIC natively)

Convert to JPEG if:

  • You regularly share photos with Windows users
  • You upload to websites or services that don't accept HEIC
  • You use software that doesn't support HEIC

The Easiest Solution

Change your iPhone camera to always shoot JPEG: Settings → Camera → Formats → Most Compatible. Photos will be ~50% larger but always compatible. Consider enabling this setting permanently if you regularly share photos with non-Apple users.