Content creation

Turn an HDR image trick into a web tool with Claude Code

A developer worked with Claude Code to turn the gain-map trick behind extra-bright logos on HDR screens into a small web tool.

By telecuda on Hacker News · Posted · Added Oct 16, 2026

Difficulty
BeginnerOur rating
Time to build
Not reportedOur estimate
Monthly cost
Not reported
Revenue
Not reportedWe only show revenue the source states
Engagement
81 HN points88 comments · fetched Oct 15, 2026

What they did

telecuda noticed some LinkedIn logos looked brighter and found it was a gain map added to a JPEG, visible only on HDR screens. He worked with Claude Code to turn it into a tool.

How it went

He shipped soverybright.com. LinkedIn is the only network he found that does not strip the maps.

Worth knowing

The effect only shows on HDR displays.

Builder recipe

Our own starting point, written from the source. Adapt it to your setup.

Stack

  • Claude Code
  • An image library that writes gain maps

Steps

  1. Pick a repeatable format.
  2. Let the agent generate drafts or assets from your inputs.
  3. Edit and check facts and rights before publishing.
  4. Reuse the template for the next piece.

Starter prompt

Build a single-page tool that takes a logo PNG and outputs a JPEG with an HDR gain map so whites look brighter on HDR screens. Everything runs in the browser.

Tags

Industry Design Marketing

Read the original

Related use cases

no count
NEW Content creation

Sell an AI song-making app on mobile

A mobile app turns ideas into original AI songs, sold by weekly and yearly subscription.

💰 $22,888 MRR, verified via RevenueCat on TrustMRR (synced 2026-10-15)Advancedby Anonymous founder

The Daily 5.

Five real AI agent use cases each morning, each with a recipe and a source. Plus a Sunday roundup. Free.