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HEIC vs PNG – Which iPhone Photo Format Is Better?

HEIC saves storage on iPhone with efficient compression. PNG works everywhere with guaranteed lossless quality. Here's when to use each.

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Quick Answer

Use HEIC for storing photos on your iPhone, where it saves a lot of space. Use PNG when you need the file to open everywhere, need transparency, or want lossless quality for editing. Converting HEIC to PNG makes files much larger, but the image will then work on any device.

HEIC vs PNG Comparison

FeatureHEICPNG
CompressionLossy (efficient)Lossless
TransparencyLimited platform supportYes (alpha channel)
Typical file sizeSmall (~2-5 MB for iPhone photos)Large (~8-15 MB for same photo)
Browser supportSafari onlyUniversal
CompatibilityApple ecosystemAll platforms and software
QualityExcellent for photos, lossyPixel-perfect, lossless
Editing supportLimited outside Apple appsUniversal (all image editors)
Special featuresLive Photos, depth mapsNone

When to Use HEIC

  • iPhone photo storage: it is the default format and saves 50% space compared with JPG
  • Sharing between Apple devices with AirDrop, iMessage or iCloud
  • Live Photos, because HEIC keeps the motion and sound
  • Portrait mode photos, since it keeps the depth data for focus and bokeh
  • Everyday photography, where it gives excellent quality at small file sizes

When to Use PNG

  • Sharing across platforms, since PNG works on Windows, Android, Linux and every other device
  • Web and email, because all browsers and mail clients support it
  • Design and editing in Photoshop, GIMP, Canva or any other editor
  • Graphics with transparency, such as logos, icons and overlays
  • Screenshots and UI elements, which keep sharp text and edges without artifacts

Key Differences Explained

The core trade-off is file size against compatibility. HEIC compresses photos very well but is in practice limited to Apple devices. PNG works everywhere but makes photographic files 3-5x larger. If your photos stay on Apple devices, HEIC is the better choice. If you need to share or publish them broadly, you need PNG (or JPG).

PNG handles transparency better. HEIC technically supports transparency, but most non-Apple software ignores it, while PNG's alpha channel is supported everywhere. That makes PNG the standard for any graphic that needs a transparent background.

The formats also keep different data. HEIC stores iPhone-specific metadata such as depth maps, Live Photo components and ProRAW data. PNG stores standard EXIF data, and all Apple-specific information is lost in the conversion. If you might need the depth data or the Live Photo later, keep the HEIC original.

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Frequently Asked Questions

Is HEIC higher quality than PNG?

HEIC uses more efficient compression than PNG, so it can store photos that look just as good at roughly half the file size. However, PNG is lossless, so it preserves exact pixel data without any quality loss. For photographs, HEIC provides excellent quality at much smaller sizes. For graphics with sharp edges and text, PNG preserves more detail.

Why do I need to convert HEIC to PNG?

You need to convert HEIC to PNG when sharing photos with someone who doesn't have an Apple device, uploading to a website or platform that doesn't accept HEIC, using an image in a design project that requires PNG, or when you need transparency support that HEIC doesn't reliably provide across platforms.

Does converting HEIC to PNG make files larger?

Yes, by a lot. PNG is a lossless format, so a photo that's 2 MB as HEIC might become 8-12 MB as PNG. If file size matters, consider converting HEIC to JPG instead. You'll get a much smaller file with minimal quality loss for photographs.

Can PNG store iPhone Live Photos?

No. PNG is a static image format and cannot store Live Photos, depth maps, or other iPhone-specific photo data. When you convert a HEIC Live Photo to PNG, you get only the still image. The motion and depth information is lost. Keep the original HEIC if you need these features.