图片压缩
拖入图片，调质量压缩。全程浏览器本地处理，不上传服务器。
支持 JPG / PNG / WebP；质量越低体积越小。
中文介绍
旅行拍照常常一张好几 MB，发朋友圈、传平台或提交上传时经常卡在大小限制。这个工具把图片在你自己的浏览器里压缩，图片不会离开你的设备，不担心隐私。
调低质量滑块，体积明显下降；JPG / WebP 走有损压缩，PNG 优先保画质。适合大批量处理旅行照片、电商主图、证件照上传前瘦身。
常见问题
压缩会明显降低画质吗？
质量 60-80 之间画质几乎无损，体积通常能砍掉一半以上；低于 50 才开始看到轻微压缩痕迹。建议 70 左右是体积与画质的平衡点。
支持哪些图片格式？
支持 JPG、PNG、WebP 三种主流格式，可互转输出。GIF、BMP 等需先转成这三类。
图片会传到服务器吗？
不会。整个压缩在你浏览器的内存里完成，原始图和结果都不上传，刷新页面即清空。
English
Travel photos are often several MB each, and many platforms and upload forms have size limits. This tool compresses the image in your own browser — the file never leaves your device, so there's no privacy concern.
Lower the quality slider to shrink the size fast; JPG/WebP use lossy compression, PNG keeps quality first. Great for batch-trimming trip photos, product shots, or ID photos before uploading.
FAQ
Does compressing visibly reduce quality?
Between quality 60-80 the image looks nearly identical while often cutting file size by more than half. Below 50 you start to see slight artifacts; around 70 is a good balance.
Which formats are supported?
JPG, PNG and WebP are supported and can be converted between each other. GIF and BMP should be converted to one of these first.
Is my image uploaded to a server?
No. The whole compression happens in your browser's memory; neither the original nor the result is uploaded, and refreshing the page clears everything.