Image Conversion
Convert BMP to APNG Online — Free
Fast, free BMP to APNG 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
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変換方法
1
Upload your .bmp 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 .apng file when it's ready.
BMPとは？
BMP is a simple, uncompressed image format native to Windows. It provides perfect quality but results in very large file sizes.
形式の詳細
- 正式名称
- Bitmap Image
- 拡張子
- .bmp
主な特徴
- Uncompressed
- Windows native
- Perfect quality
- Simple format
APNGとは？
APNG (Animated PNG) is an extension of the PNG format that supports animation. It offers full alpha transparency and better image quality than GIF, making it ideal for high-quality web animations.
形式の詳細
- 正式名称
- Animated PNG
- 拡張子
- .apng
主な特徴
- Animated images
- Full transparency
- Better quality than GIF
- Web-optimized
BMPとAPNGの比較
| 特徴 | BMP | APNG |
|---|---|---|
| 正式名称 | Bitmap Image | Animated PNG |
| 拡張子 | .bmp | .apng |
| 最適な用途 | Uncompressed | Animated images |
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.