How Good Is HEIC Quality, Really?
The first reaction to HEIC is usually suspicion: half the size must mean worse quality, right? Quite the opposite — HEIC's whole point is smaller files at the same quality. This page explains how it manages that, and when quality really does get lost.
Why it compresses better
The imagery inside a HEIC container is encoded with HEVC — the same algorithm family as 4K video: smarter prediction and transforms express the same picture information in fewer bytes. At equal visual quality, HEIC lands around half the size of JPG.
Small file doesn't mean less information — that's the key to understanding HEIC quality.
Where quality is actually lost
HEIC is a lossy format — the photo is compressed once at the moment of capture, just more efficiently than JPG. The degradation you can actually see almost always comes from repeated edit-export-recompress cycles: every pass stacks another layer of loss.
Does converting add loss?
Converting HEIC to JPG re-encodes once: at 90%+ quality the difference is essentially invisible; at 60% it visibly blurs. Use high quality at every step and there is no 'worse every conversion' compounding effect.
Archive advice
- Don't delete the original HEIC — it's the best-quality, smallest version you have, and you can always reconvert.
- For sharing, convert to JPG for maximum compatibility.
- Before heavy editing, convert to a lossless format like PNG to avoid generation loss.