Browser-based tool makes logos extra bright on HDR screens using gain-maps

telecuda · hn · 2026-08-23

The author noticed that certain logos on LinkedIn appear significantly brighter and whiter on HDR screens like newer MacBook Pros. Investigation revealed this is achieved by adding a gain-map to existing JPEGs, visible only on HDR displays. LinkedIn is currently the only social network not stripping these out. The author collaborated with Claude Code to build a no-registration browser utility for this purpose.

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