Best for photos, email, and lighter sharing
If the file does not need alpha transparency anymore, JPG is often easier to send, easier to upload, and lighter to deliver on the web.
Use a lighter delivery format for web and email when the image no longer needs PNG transparency, without uploading the original first.
自定义 · JPEG · 智能优化(推荐) · 原始分辨率
你也可以点击选择文件。
支持格式:JPEG、PNG、WebP、AVIF
Pro 支持一次压缩整个文件夹和 ZIP。
部分格式可能会因浏览器环境而产生不同结果。
这张沙漠照片是在 KaruImg 中用与首页相同的浏览器本地流程压缩得到的。拖动滑块,对比细节保留和文件体积下降的效果。
示例照片授权来源 Unsplash
This is useful when the image is acting more like a photo or simple delivery asset and PNG transparency is no longer part of the job.
If the file does not need alpha transparency anymore, JPG is often easier to send, easier to upload, and lighter to deliver on the web.
Do not force this conversion on logos, UI assets, or graphics that rely on clean transparent edges. In those cases, PNG usually remains the safer format.
在保持简单流程的同时,图片处理只在浏览器内完成,是否保留原文件的判断也更加稳妥。
无需上传,直接在 Web Worker 中运行,快速且安全。文件不会离开你的设备。
如果没有体积收益,就不会强行牺牲画质,而是安全地保留原图。
没有复杂的质量滑块。系统会分析每个文件,并自动选择最合适的压缩设置。
零配置 • 本地优先 • 隐私优先