Images

HEIC vs JPG vs PNG: Which Image Format Should You Use?

Three formats cover almost everything a Mac user runs into: HEIC, JPG, and PNG. They look similar in Finder, but they behave differently, and picking the wrong one is why photos won't upload, files balloon in size, or a logo shows up with a white box. Here's the short version of when to use each.

The quick answer

  • HEIC — best for storing iPhone photos. Smallest files at high quality, but limited support outside Apple.
  • JPG — best for sharing photos. Small, universally supported, no visible quality loss for photographic images.
  • PNG — best for graphics, screenshots, and anything needing transparency. Larger files, lossless, sharp edges.

HEIC: efficient storage, narrow support

HEIC is what your iPhone shoots by default, and for good reason — it packs high quality into a small file. The trade-off is reach. Windows machines, older editors, and many web forms don't read it, which is why a HEIC can preview fine on your Mac and still get rejected elsewhere. Keep it for storage; convert it when you need to share. If one won't cooperate, here's the fix.

JPG: the universal photo format

JPG has been the standard for photographs for decades. It's small, it's accepted by essentially every app and platform, and at normal quality settings you won't see the compression in a photo. It can't hold transparency, and repeated re-saving slowly degrades it, but for sharing camera photos it's almost always the right pick. Converting comes up often: HEIC to JPG for iPhone shots, PNG to JPG to shrink a heavy graphic-format photo.

PNG: lossless and transparent

PNG is the one to reach for with screenshots, logos, diagrams, and any image that needs a transparent background. It's lossless, so edges stay crisp and edits don't accumulate damage. The cost is size — a PNG photo is far heavier than the JPG equivalent. It's also the only one of the three that stores transparency, which is why a background cutout always saves as PNG. To go the other way for a photo, HEIC to PNG covers it.

A simple decision rule

Ask two questions. Is it a photo or a graphic? And does it need transparency?

  • Photo, sharing it → JPG
  • Photo, storing it on Apple devices → HEIC
  • Graphic, screenshot, or needs transparency → PNG

FAQ

Is HEIC better than JPG? For storage, HEIC fits more quality into less space. For sharing, JPG wins on compatibility. They're suited to different jobs.

Does converting HEIC to JPG lose quality? Not visibly, at normal JPG quality — and the file gets much smaller.

When should I use PNG over JPG? For screenshots, graphics with sharp lines, or anything that needs a transparent background.

Can I convert between all three on a Mac? Yes. Converleon handles HEIC, JPG, and PNG in any direction, offline — see the format-specific guides linked above.

Wrapping up

There's no single best format — there's the right one for the job. Store in HEIC, share in JPG, use PNG for graphics and transparency. When you need to move between them, the conversions are all two-step and local. For the broader picture of newer formats like WEBP and HEIF, see the supported-formats overview.

Download Converleon for Mac — convert between HEIC, JPG, and PNG offline.