选择转换类型
找到你手上的文件格式,以及你需要的格式。

图片由你的浏览器解码并导出为 JPG,无需上传文档。此工具导出的是单张静态图像,而不是动画。输出 JPG 时,透明像素会放在白色背景上。JPG 压缩可能改变细微的细节。
PNG 以无损压缩存储静态图像,并能保留透明区域。 截图、标志、界面图形,以及需要透明效果的图片。
JPG 是一种得到广泛支持的图像格式,在照片质量和较小的文件体积之间取得平衡。 JPG 不支持透明背景。再次以有损压缩保存可能丢失细节;转换为 PNG 也无法找回这些细节。
One image at a time, up to 50 MB and 40 megapixels. Transparent areas are filled with white.
文件在你的浏览器中处理。请保持此标签页打开,直到下载就绪;大文件可能超出设备可用的内存。
没有匹配的工具。试试输入 PDF 或 MP3 等文件扩展名。
找到你手上的文件格式,以及你需要的格式。
Tools marked “On your device” run in your browser. Tools that need server processing are marked as not available yet.
保存新文件,继续忙你的事。
The tools available now run in your browser, and the contents of your files are not uploaded to our conversion service. Audio, video and advanced document tools would need server processing; they are planned, shown as not available yet, and cannot be used at present.
No. Only supported pairs are offered, and the pairs marked as not available yet cannot be used today. When available, MP3 to MP4 will create a static-background video using your audio, PDF to Word will extract editable text without preserving original fonts, images or complex layouts, and PDF to Excel will extract structured tables, not entire page designs.
Yes. The free allowance is five successful conversions a day, resetting at 00:00 UTC, and you do not need to sign in. A conversion only counts when it succeeds, and downloading a result again does not count again.
更改格式无法找回之前已丢失的细节。重新编码音频、视频或 JPG 文件可能降低质量。请保留原文件,并在使用前检查转换结果。