AVIF 是目前浏览器中最好的图像编解码器。但它也是你会计师的邮件客户端无法识别的格式。当兼容性比压缩更重要时，请转换为 JPG 格式。
或者将图片拖放到这里。
支持JPG, JPEG, PNG, WEBP, SVG, GIF, HEIC, HEIF, BMP, TIFF, HDR, JP2, RAF, PSD, CR3, DNG, APNG, AVIF, AVI, ESP, EXR, J2C, J2K, JXL, PFM, PNM, PPM, PSB, SGI, MPEG, PDF
拖放从现代网站下载或从支持 AV1 的工具导出的 AVIF 文件。有损、无损和 HDR AVIF 文件均可解码。
解码后的像素在白色背景上合成（JPG 没有 Alpha 通道）。广色域色彩映射到 sRGB。最终结果以 90 质量编码为 JPG。
输出文件可兼容所有支持 JPG 格式的应用程序——适用于所有操作系统、所有版本以及所有旧版工具。文件名保留 .jpg 扩展名。
Convert AVIF to JPG for better compatibility and optimization
Improved file compatibility and optimized performance
Professional-grade conversion with quality preservation
excellent for photos with advanced JPG encoding
Perfect for photography, web images, social media
Handles next-gen compression, excellent quality, HDR support from AVIF files
在兼容性优先的情况下，牺牲文件大小来换取兼容性。
Microsoft Audio/Visual Interleaved
Joint Photographic Experts Group JFIF format
Note, JPG is a lossy compression. In addition, you cannot create black and white images with JPG nor can you save transparency. Requires jpegsrc.v8c.tar.gz. You can set quality scaling for luminance and chrominance separately (e.g. -quality 90,70). You can optionally define the DCT method, for example to specify the float method, use -define jpeg:dct-method=float. By default we compute optimal Huffman coding tables. Specify -define jpeg:optimize-coding=false to use the default Huffman tables. Two other options include -define jpeg:block-smoothing and -define jpeg:fancy-upsampling. Set the sampling factor with -define jpeg:sampling-factor. You can size the image with jpeg:size, for example -define jpeg:size=128x128. To restrict the maximum file size, use jpeg:extent, for example -define jpeg:extent=400KB. To define one or more custom quantization tables, use -define jpeg:q-table=filename. These values are multiplied by -quality argument divided by 100.0. To avoid reading a particular associated image profile, use -define profile:skip=name (e.g. profile:skip=ICC).
压缩损失、透明度、HDR，以及为什么 AVIF 尚未被普遍接受。
