HEIC を WebP に変換 — モダン・軽量
より小さく、Web 対応の画像のために HEIC を WebP に変換。ブラウザ内で動作、アップロード不要。
Output format
Quality
92%Drop your HEIC files — convert to WEBP
or click to browse · processed locally in your browser
Free · 5 of 5 watermark-free conversions left today
WebP は Google のモダンな画像形式で、同じ品質で JPG より通常 25〜35% 小さくなります。iPhone の HEIC 写真を WebP に変換して、より速い Web サイトと少ないストレージを実現。
How to convert HEIC to WebP 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 WebP as the output
WebP is selected automatically on this page. Adjust the quality slider if you want a different balance between size and fidelity.
- 3
Download your WebP 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 WebP 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 WebP — quick comparison
| HEIC | WebP | |
|---|---|---|
| File size | Very small | Small — 25–35% smaller than JPG |
| Quality | Excellent | Excellent at the same size as JPG |
| Browser support | Safari only on the web | Every modern browser |
| Best for | Apple ecosystem | Websites, web apps, faster page loads |
Device & app compatibility
Where HEIC works out of the box, and where you really need WebP.
| Platform | HEIC | WebP |
|---|---|---|
| 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
WebP は JPG より小さいですか？
はい、同等の視覚品質で通常 25〜35% 小さくなります。
すべてのブラウザが WebP をサポートしていますか？
はい。Chrome、Edge、Firefox、Safari (14+)、最新の Android。
品質レベルを制御できますか？
はい — 品質スライダーを使用してください。Web 用途には 80〜90 が良いバランスです。
ファイルはアップロードされますか？
いいえ。変換はブラウザ内のクライアント側で行われます。
HEIC を WebP に一括変換できますか？
はい — ZIP ダウンロード付きバッチ変換に対応しています。