Imagick CLI 未将 SVG 中的 base64 图像转换为 PNG答案

【问题标题】：Imagick CLI not converting base64 images in SVG to PNGImagick CLI 未将 SVG 中的 base64 图像转换为 PNG
【发布时间】：2022-10-05 01:41:45
【问题描述】：

使用 Imagick CLI 和下面编码的示例 SVG 文档，图像不会在 png 中呈现，但是如果将 SVG 转换为 html 文档，它会全部加载。我可以在线解码 base64 并显示有效图像，并尝试不同的图像标记表示法。我迷失在我做错了什么。

magick .\test.svg image.png

ImageMagick 7.1.0-49 Q16-HDRI x64 7a3f3f1:20220924
Windows 10 操作系统

未呈现的示例代码：

<svg xmlns:xlink="http://www.w3.org/1999/xlink" style="position: relative; overflow: hidden;" version="1.1" id="natal_chart" width="800" height="800" viewBox="0 0 800 800">

<image x='322' y='402' preserveAspectRatio='none' href='data:image/png;base64,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'></image>
<img src='data:image/png;base64,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'/>

</svg>

【问题讨论】：

img 不是有效的 SVG 元素，我敢打赌 ImageMagick 想要图像元素的高度和宽度属性。

标签： svg base64 imagick

【解决方案1】：

如果您想将上述代码用作您提供给 ImageMagick 的独立 SVG 文件，您需要做几件事：

使用默认命名空间：xmlns="http://www.w3.org/2000/svg" 除了xlink 命名空间声明
为href 属性使用xlink 命名空间
安装Inkscape。如果它在PATH 中，imagick 会选择它来渲染文件。不要使用 librsvg，它会失败。

不要在 HTML 命名空间中包含无效的 <img> 标记。

这个文件是在 Inkscape 中为我渲染的，但不是 rsvg-convert：

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="800" height="800" viewBox="0 0 800 800">
  <image x='322' y='402' preserveAspectRatio='none' xlink:href='data:image/png;base64,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'></image>
</svg>

至于 ImageMagick，我遇到了问题，因为 librsvg 是并行安装的，尽管 documentation 说什么，但还是首选。但在最佳情况下，无论如何转换都委托给 Inkscape，您可以直接在 CLI 模式下使用它：

inkscape -o image.png .	est.svg

【讨论】：