Image Conversion
Convert HDR to AVIF Online — Free
Fast, free HDR to AVIF converter. No registration required.
またはインポート元
200万以上のファイル変換
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処理後にファイルを自動削除
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すぐに変換を開始
どこでも動作
あらゆるブラウザ、あらゆるデバイス
変換方法
1
Upload your .hdr file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .avif file when it's ready.
HDRとは？
HDR (Radiance) is a high dynamic range image format used in 3D rendering, lighting design, and photography. It stores full floating-point color data for realistic lighting effects.
形式の詳細
- 正式名称
- Radiance HDR
- 拡張子
- .hdr
主な特徴
- High dynamic range
- 3D rendering
- Lighting design
- Float precision
AVIFとは？
AVIF is a modern image format based on the AV1 video codec. It offers the best compression available, outperforming both WebP and JPEG.
形式の詳細
- 正式名称
- AV1 Image File Format
- 拡張子
- .avif
主な特徴
- Best compression
- HDR support
- Transparency
- Modern browsers
HDRとAVIFの比較
| 特徴 | HDR | AVIF |
|---|---|---|
| 正式名称 | Radiance HDR | AV1 Image File Format |
| 拡張子 | .hdr | .avif |
| 最適な用途 | High dynamic range | Best compression |
よくある質問
Converting between lossless formats (PNG, BMP, TIFF) preserves perfect quality. For lossy formats like JPG and WebP, you can adjust the quality slider to control compression. Default settings prioritize visual quality.
Transparency is preserved when converting to formats that support it (PNG, WebP, TIFF, GIF). If the target format doesn't support transparency, a white background is applied.
Yes. Upload your HEIC files and convert to JPG, PNG, or WebP instantly. Perfect for making iPhone photos compatible with any device or platform.
No resolution limit. We handle images of any size — from small icons to high-resolution photos and print-ready images.
Pro users can batch convert multiple images at once. Free users can convert one image at a time. All conversions are processed on our servers, so even large files convert quickly.