How can I preview image data urls in linux (e.g. data:image/png;base64, <data>)?

I opened some json-based configuration file and I see that there is a favicon key whose value is a [data url](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URLs#datatextplainbase64sgvsbg8sifdvcmxkiq) representing a png: "favicon": "data:image/png;base64,iVBORw... I am looking for a way to preview this data url using command-line, e.g. by opening in [feh](https://feh.finalrewind.org/) Is there an image viewer that supports this out of the box? Otherwise how should I pre-process image urls so that I can preview the corresponding images? Ideally I want to have a command preview-image-url to which I can pass an image urls via stdin or at least as a file argument.