HEIC to PNG 변환기 — 무손실 iPhone 사진 변환

No — PNG is a lossless format, so there is no quality slider to tune; the tool always produces a bit-faithful decode of the HEIC pixels at full resolution. If you want a smaller file with an adjustable quality setting instead, use the HEIC to JPG converter, which exposes a 20–100% quality slider.

Switch the mode toggle from "Single file" to "Batch" above the upload area. Batch is a Premium feature: drop multiple HEIC/HEIF files, each is converted to PNG with the same lossless settings, and they're packaged into a single ZIP you download in one click.

This is expected, not a bug. HEIC uses heavy modern compression while PNG is lossless and keeps every pixel bit-exact, so file sizes typically grow 3–6x on the same photo. Choose PNG when you need pixel-perfect quality for editing or print; choose the HEIC to JPG tool if file size matters more.

For one or two photos, single-file mode gives an in-tool preview so you can review each result before downloading. For a whole camera roll or event folder, switch to Batch mode (Premium) — it applies the same lossless PNG conversion to every file and hands back one ZIP, which is far faster than converting file by file.

브라우저는 HEIC/HEIF 이미지를 자체적으로 디코딩할 수 없으므로, JPG나 PNG 기반 도구와 달리 이 변환기는 원본 사진을 화면에 렌더링하지 못합니다 — 그 자리에 파일명과 업로드 아이콘이 보입니다. 무손실 PNG가 서버에서 돌아오는 즉시(보통 1초 이내) 그것이 여러분이 보고 다운로드할 수 있는 미리보기가 되므로, 렌더링할 수 없는 원본 파일이 아니라 항상 실제 출력물을 미리 보게 됩니다.

Yes — once you're in Batch mode, each queued HEIC/HEIF file shows as a pill with its own small X button; click it to drop just that one file from the queue without touching the rest. If you want to start fresh, use the 'Clear all' button above the file list to empty the entire queue in one click, then drag in a new set of files.