Shrink image files in the browser without uploading originals, using local-first processing and practical defaults.
保留画质，只减小体积。
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 works best when you need smaller files for uploads, blog publishing, or email, but do not want to send the original image through another service first.
If an image is already the right size but still feels too heavy, compression is usually the first thing to try. It is especially useful for blog images, email attachments, content handoff, and social assets.
The best result is not the smallest possible file. It is the smallest file that still looks the same where it will be used. If the image already looks efficient, keeping the original is often the better outcome.
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
