html - Any downsides to using image src without protocol? -


basically, wanting switch ssl, , maybe 1 day site might not have ssl, need downgrade using http: protocol if needed without trouble. wondering if use approach images ok? , if there downsides this?

<img src="//path/to/image.jpg" />

and

<img src="//another.site.com/images/path/to/image.jpg" />

this seems work fine, wondering if there downsides images without protocols in browsers, or otherwise?

thanks


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