⚡ 优化 WebPOptimize WebP
尝试有损（所选质量）和无损两种编码，保留最小的结果；如果都不比原图小，就保留原图并提示「已经是最优」，同时显示两个大小。本地处理。Tries a lossy encode (at the chosen quality) and a lossless encode and keeps the smallest; if neither is smaller than the original, the original is kept with an "already optimal" note and both sizes. Processed locally.
使用说明与常见问题How-to & FAQ
「优化 WebP」是什么？What is the Optimize WebP tool?
尝试有损（所选质量）和无损两种编码，保留最小的结果；如果都不比原图小，就保留原图并提示「已经是最优」，同时显示两个大小。本地处理。Tries a lossy encode (at the chosen quality) and a lossless encode and keeps the smallest; if neither is smaller than the original, the original is kept with an "already optimal" note and both sizes. Processed locally.
如何使用「优化 WebP」？How do I use the Optimize WebP tool?
在「优化 WebP」中，选择或拖入文件，按需设置「有损质量」等选项，然后点击每个结果旁的「下载」按钮即可；有多个文件时也可以点「全部下载（ZIP）」一次打包下载。In the Optimize WebP: Choose or drop your files, set "Lossy quality", then click the Download button next to each result (with several files, "Download all (ZIP)" saves them together).
为什么只导出 WebP？Why does it only export WebP?
本页是 WebP 系列工具之一：读入图片后按你设置的质量（1–95，默认 70）重新压缩，再按 WebP 格式导出，便于在 WebP 工作流里直接使用。质量越低文件越小，但细节损失越多。需要 PNG 或 JPG 结果时，请用对应的通用图片工具。This page is one of the WebP tools: it loads the image, re-compresses it at the quality you set (1–95, default 70), and exports the result as WebP so it fits straight into a WebP workflow. Lower quality gives a smaller file with more loss of detail. For PNG or JPG output, use the matching general image tool.
会上传吗？Uploaded?
不会，图片只在浏览器本地处理。No. Processed locally in your browser.
结果会比原图大吗？Can the result be larger than the original?
不会。本页会分别试一次有损编码（所选质量，默认 75）和一次无损编码，取较小的那个；如果仍不比原图小，就保留原图并提示「已经是最优」，同时显示两个大小。No. The page tries a lossy encode (at the chosen quality, default 75) and a lossless encode and keeps the smaller one; if that is still not smaller than the original, the original is kept, you see "already optimal", and both sizes are shown.
有哪些选项可以调整？What options can I adjust?
「优化 WebP」的设置：「有损质量」默认 75，范围 1–95；可选文件：常见图片格式（含 HEIC、HEIF、AVIF、WEBP、BMP、JFIF）。每次生成结果都按当前设置处理。Settings in the Optimize WebP — "Lossy quality" default 75, range 1–95; files: common image formats (including HEIC, HEIF, AVIF, WEBP, BMP, JFIF). The result always uses the current settings.
「优化 WebP」免费吗？需要注册吗？Is the Optimize WebP free? Do I need an account?
「优化 WebP」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Optimize WebP is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.