PNG 压缩在图片为纯色、锐利边缘、文字或透明时效果最好。如果 PNG 其实是照片或大型截图，转成 WebP 通常比硬要把 PNG 再压缩更省空间。
想快速测试，可用 PNG to WebP Converter 转换一份副本并比较结果。
先从尺寸开始
一张宽 3000 像素的 PNG 用在 900 像素的版面里是在浪费文件大小。先把图片调整到实际显示尺寸，再进行压缩或转换。
选择合适的格式
透明来源档与清晰编辑请保留 PNG。当 WebP 能产生更小结果且目的地支持时，网站发布图片请使用 WebP。
保留原始文件
请务必把原始 PNG 存放在安全的地方。网站导出档是交付档，不该是你唯一可编辑的副本。
常见问题
为什么我的 PNG 压缩后还是很大？
PNG 默认是无损压缩，因此照片与渐变通常不会变小，除非你缩减尺寸或转换为 WebP 之类的格式。
PNG 压缩会降低画质吗？
无损 PNG 压缩会让像素完全一致。其他流程可能减少色彩或尺寸，进而改变图片。
Resources
参考资料
利用这些参考资料，在指南、对应的支持页面与内容创作者之间切换。
Convert PNG images to smaller WebP files in your browser.
打开工具Image CompressorCompress JPG, PNG, and WebP images locally with quality controls.
打开工具如何将图片压缩到 500KB使用浏览器工具，将 JPG、PNG 或 WebP 图片缩减到如 500KB 这类目标文件大小的实用流程。
阅读指南如何在不丢失透明度的情况下将 PNG 转换为 WebP实用指南：将透明 PNG 图形转换为 WebP，同时检查 alpha 边缘、预览结果，并避免常见的导出错误。
阅读指南为什么 PNG 文件这么大？了解 PNG 文件为何会变得庞大、PNG 何时仍是合适的格式，以及 WebP 或 JPG 何时更适合网站传输。
阅读指南Leon PatelCreates how-to guides and photo tips that keep the advice simple, clear, and ready to use in Gift Studio.
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