The HDR trick that makes brand logos shine past the page on LinkedIn. Upload your logo, get a file whose whites glow on iPhones, iPads, MacBooks and OLED phones — while looking perfectly normal everywhere else.
LinkedIn re-encodes every image you upload. Standard HDR files lose their glow in that pipeline — but LinkedIn keeps color profiles. Your whites get encoded with the PQ curve and wrapped in a Rec. 2020 PQ color profile, so the brightness travels inside the color management. Only HDR screens see it. Everyone else sees your normal logo.