为什么要把 WebP 转为 JPG？
WebP 是谷歌的现代图片格式——同样画质下比 JPG 体积更小。网站都爱用它，所以从网上保存的图片越来越多是 .webp。问题是：很多桌面软件、旧手机、邮件客户端和上传表单仍然不接受 WebP。转为 JPG，您得到的文件在哪都能用。
如何将 WebP 转为 JPG
1. 把 WebP 图片拖到上方框内，或点击选择文件。
2. 点击转为 JPG。每张图片都会在浏览器中以 92% 质量重新编码。
3. 文件自动下载——单个直接下载，多个打包为 ZIP。
WebP 与 JPG 对比
同样视觉质量下，WebP 通常比 JPG 小 25–35%，还支持透明和动画。JPG 的优势是无处不在的支持：过去 25 年的每个操作系统、浏览器、打印机和电子相框都能打开 JPG。当兼容性比体积更重要时，选 JPG。
常见问题
What is a WebP file?
WebP is an image format developed by Google, designed as a smaller replacement for JPG, PNG and GIF. Chrome, Firefox, Edge and Safari all display it, but many desktop programs and upload forms do not accept it.
Will converting WebP to JPG lose quality?
Slightly — JPG is lossy. At 92% quality the difference is hard to spot. If your WebP has transparency, it becomes a white background in JPG.
Why are images I save from websites in WebP?
Sites serve WebP because it loads faster. Your browser saves exactly what the site sent, so downloads arrive as .webp even when you expected .jpg.
Are my images uploaded anywhere?
No. Conversion runs entirely in your browser with the Canvas API. Nothing leaves your device.
Can I convert multiple files at once?
Yes — select several and they are bundled into one ZIP download.