Image Conversion
Convert JPG to AVIF Online — Free
Fast, free JPG 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 .jpg 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.
JPGとは？
JPG (JPEG) is the most common image format for photographs. It uses lossy compression to achieve small file sizes while maintaining good visual quality.
形式の詳細
- 正式名称
- JPEG Image
- 拡張子
- .jpg
主な特徴
- Universal support
- Small file sizes
- Great for photos
- Adjustable quality
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
JPGとAVIFの比較
| 特徴 | JPG | AVIF |
|---|---|---|
| 正式名称 | JPEG Image | AV1 Image File Format |
| 拡張子 | .jpg | .avif |
| 最適な用途 | Universal support | 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.