Show HN: Make your logo extra bright on HDR screens

Posted by telecuda 4 hours ago

Show HN: Make your logo extra bright on HDR screens(www.soverybright.com)

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!

35 points | 42 commentspage 2

opengrass 2 hours ago|

Waddabout an ImageMagick command or explanation how to export in Inkscape?

Stitch4223 3 hours ago||

This is fun and will try to embed it in our project next week.

layer8 1 hour ago|

Please don’t. Your profile states that you’re an ethical hacker.

perryizgr8 3 hours ago||

The page says it should work on my phone but it doesn't. No difference between the SDR and HDR versions on my phone (S26 Ultra / Chrome).

Jaxan 2 hours ago||

It also depends on your screen brightness. In my case, if it’s set to maximum, there is no difference between SDR and HDR.

telecuda 2 hours ago|||

That's what I'm finding as I researched it:

Android's HDR brightness slider is low - The single most common "HDR does nothing" report on Android 15/16 devices. Samsung also has Super HDR/Extra brightness / Vision booster toggles under Display. Any of them at the conservative setting would have an effect.

mattlondon 2 hours ago|||

Came here to say this. It just cranks the brightness up for the pixels. But if you are already at 100% there is not much headroom so all the "before and after" for me were pretty hard to differentiate. There was some minor difference if I studied it closely but I'd probably not notice it during normal use it was so slight.

If I went down to say 50% brightness then it was much more pronounced, but who lives their life with their eyes only half open like that?!

telecuda 2 hours ago||

I was only able to test it on my iPhone. Let me see if the S26 needs a tweak (or confirm if it's not support)

telecuda 2 hours ago||

Works for text too!

DonHopkins 1 hour ago|

Now how can I draw Vantablack text on HD white for the highest possible contrast?

https://en.wikipedia.org/wiki/Vantablack