Show HN: Make your logo extra bright on HDR screens
A new web tool allows users to convert standard images into HDR JPEGs that glow on compatible displays. It uses ISO 21496-1 gain maps to ensure the images remain standard JPEGs on non-HDR devices while providing a high-brightness experience on supported screens.
Why it matters
This technology offers a way to enhance digital branding and visual design without breaking compatibility with older web standards.
Upload a logo, choose which colors should glow, download an HDR JPEG. On HDR screens the chosen parts shine up to 7.5× brighter than #FFFFFF . Everywhere else it's a perfectly normal JPEG.
Drop your logo here, or click to choose PNG, JPEG or WebP · free · nothing is stored
SDR white as bright as a screen normally goes
HDR white · +2.9 stops up to 7.5× brighter
Original artwork, converted with this tool. Drag the handle; on an HDR display in a capable browser the right side glows. “Use this” loads the original into the tool above.
White type on black — the classic case. The whites are selected automatically.
A white ring plus one brand color. Whites and the blue are both pushed to the same peak.
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