图片上传后通常会变模糊，是因为目标平台改动了它们。CMS、电商平台、社交平台或主题可能会重新调整文件大小、再次压缩、裁剪，或以超过你上传像素的尺寸显示。
先检查最终显示尺寸。如果图片以宽度 1200 像素显示，请上传至少宽度 1200 像素的干净文件。为了在高密度屏幕上清晰呈现，许多网站使用 2 倍来源效果很好，例如 1200 像素显示区块对应 2400 像素。
常见原因
- 上传的图片小于显示区域。
- 平台对上传内容进行强力压缩。
- 主题用 CSS 拉伸图片。
- 文字或屏幕截图以低画质 JPG 导出。
- 移动版显示了错误的裁剪。
可以尝试的做法
使用 图片尺寸调整工具 以目标尺寸导出副本。若文件过大，请将结果通过 图片压缩工具 处理，并在替换线上图片前进行比较。
常见问题
为什么图片在本机很清晰，上传后却模糊？
网站或应用程序可能重新调整尺寸、再次压缩，或以超过实际像素的尺寸显示图片。
压缩会让图片变模糊吗？
会。过低的品质设置会让细节变软，尤其是文字、商品边缘与屏幕截图。
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。
Compress JPG, PNG, and WebP images locally with quality controls.
打开工具Image Resize ToolResize images to exact pixel dimensions with local browser processing for supported files.
打开工具网站最佳图片尺寸：实用指南在不浪费页面加载量的情况下，为网站主视觉、博客图片、产品照片、缩略图与 Retina 屏幕挑选实用的图片尺寸。
阅读指南网站图片该用 JPG、PNG 还是 WebP？针对照片、标志、截图、透明背景与日常网站发布，比较 JPG、PNG 与 WebP。
阅读指南如何在不失真的情况下调整图片尺寸了解长宽比、裁剪、拉伸和目标尺寸如何影响图片缩放质量。
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.
查看作者Dylan RossChecks guides and photo tips for freshness, usefulness, and a calm editorial voice.
查看审核者打开 Gift StudioApply the guide in the editor when you are ready to make the gift.
制作礼物See how the article was reviewed, then use the buttons below if something needs attention.
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