[因此，当我从api接收webp，base64图像格式时，出现了这个问题，该图像未在ios设备中显示，但在Android中显示。那么对于使用expo并希望在ios上显示webp图像的人有解决方案吗？如果可以在php中使用，我可以采取另一种解决方案，因为这就是我用作后端的方法。
返回图像字符串的示例
通常，webp图像与Safari不兼容。您可以检查webp here的兼容性。
[您需要做的可能是使用将图像转换为jpeg或png并使用<picture>标签的服务。这只是如何使用标记的示例。
<picture>
<source srcset="images/[email protected]" type="image/webp">
<source srcset="images/[email protected]" type="image/png">
<img src="images/[email protected]" alt="Logo">
</picture>
UPDATE
上面的示例只是向您展示如何在不同类型的图像上使用picture标签。
关于base64图像，您可以执行以下操作：
<picture>
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<source 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</picture>另一种选择是使用Modernizr来检测客户端的浏览器是否可以使用webp。您可以检查并构建专门用于webp检测的Modernizr。检查它here。
如果您可以控制图像的创建/上传方式，则需要做的是jpg / png和webp版本，并根据需要使用相应的版本。您确实需要同时拥有两者，因为正如我之前说过的那样，webp仍不兼容所有浏览器。
如果运行该代码段，您将看到，如果尝试下载该图像，它将使用webp版本。如果您从Safari中打开它，则会下载jpg版本。
UPDATE 2：图像转换
关于图像转换，您可以做的是使图像生成函数将webp图像作为参数并返回jpg图像。
由于收到的图像为base64格式，因此可以使用this topic将图像保存在服务器上，但对于您的情况则为.webp格式。之后，您可以使用imagecreatefromwebp()功能创建新图像。检查该页面末尾的示例。它将webp图像转换为jpeg。
据我所见，您可以执行以下操作：