HEIC を PNG に変換 — 可逆・無料
品質を損なわずに HEIC 写真を PNG に変換。100% ブラウザ内、アップロード不要。
Output format
Quality
92%Drop your HEIC files — convert to PNG
or click to browse · processed locally in your browser
Free · 5 of 5 watermark-free conversions left today
PNG はスクリーンショット、透過グラフィック、編集に最適な可逆形式です。この無料コンバーターは iPhone の HEIC ファイルをブラウザ内できれいな PNG 画像に変換します。
How to convert HEIC to PNG in 3 steps
Fast, free, and 100% private — every conversion happens inside your browser.
- 1
Drop your HEIC files
Drag one or more .heic photos into the converter, or tap to browse from your device. Folders and batches work too.
- 2
Choose PNG as the output
PNG is selected automatically on this page. Adjust the quality slider if you want a different balance between size and fidelity.
- 3
Download your PNG files
Conversion runs locally — nothing is uploaded. Download files individually or grab a single ZIP for the whole batch.
What is the HEIC format?
HEIC (High Efficiency Image Container) is Apple's default photo format on iPhone and iPad since iOS 11. It uses HEVC compression to store images at about half the size of JPG with the same visual quality. The trade-off: outside of Apple devices, HEIC is still poorly supported — most Windows apps, Android phones, web platforms and email clients can't open it natively.
Why convert HEIC?
Converting HEIC to a widely-supported format like PNG solves three problems at once: your photos open everywhere, they're easy to share with non-Apple users, and you can upload them to any website, CMS or printing service without errors. With this tool, conversion is instant, free and never sends your photos to a server.
HEIC vs PNG — quick comparison
| HEIC | PNG | |
|---|---|---|
| File size | Smallest | Largest (lossless, 3–5× HEIC) |
| Quality | Lossy but visually excellent | Lossless — pixel-perfect |
| Transparency | Limited support | Full alpha channel |
| Best for | Photos on Apple devices | Editing, screenshots, design assets |
Device & app compatibility
Where HEIC works out of the box, and where you really need PNG.
| Platform | HEIC | PNG |
|---|---|---|
| iPhone / iPad (iOS 11+) | Native | Native |
| macOS (10.13+) | Native | Native |
| Windows 10 / 11 | Extension required | Native |
| Android | Limited (recent versions only) | Native |
| Chrome, Firefox, Edge | Not supported | Supported |
| Gmail, Outlook, WhatsApp | Often rejected | Always accepted |
Need a different format?
Convert your HEIC photos to any other format — same tool, same privacy.
FAQ
変換は本当に可逆ですか？
はい。PNG 出力は HEIC ファイルからデコードされた全ピクセルデータを保持します。
PNG ファイルは HEIC より大きくなりますか？
通常はい。PNG は可逆なので、同等の HEIC より 3〜5 倍大きくなります。
写真はアップロードされますか？
決して。すべてブラウザ内で行われます。
HEIC を PNG にバッチ変換できますか？
はい — 複数ファイルをドロップして ZIP アーカイブをダウンロードできます。
PNG は HEIC の透過をサポートしますか？
HEIC 写真は通常透過を持ちませんが、PNG はアルファチャンネルがあれば保持できます。