svg base64字符串转换为Png

I have a PHP application that display images with base64 SVG strings, like so:

<img src="data:image/svg+xml;base64,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"/>

I would need to output and display PNG files instead.
I have Imagick installed and ready, but how can I convert a base64 SVG string to a PNG file?