Certain logos started standing out to me on LinkedIn as brighter/whiter than everything else around them.
I dug in and found out this is accomplished by adding a gain-map to an existing JPEG, visible only on HDR screens like a newer MacBook Pro. LinkedIn is the only social network I've found that isn't stripping them out, but of course you serve them up on your own site.
I worked with Claude Code to turn it into a little browser-based utility (no registration) and hope you find it useful!
Comments URL: https://news.ycombinator.com/item?id=49402521
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