False colour / exposure zones

Recolour an image's luminance as thermal, viridis, inferno or rainbow — or show shadow/highlight clipping zones.

The image stays in this browser. Nothing is uploaded or stored.

PNG, JPG, or WebP up to 25 MiB. Each pixel's luminance is recoloured through the palette — thermal, viridis, inferno, rainbow, or stepped bands. Zone mode paints shadow clipping blue and highlight clipping red, like camera exposure aids.

How to use

  1. Drop an image.
  2. Pick a palette or the zone mode.
  3. Download the recoloured image.

What it supports

PNG, JPG, or WebP up to 25 MiB. Each pixel's luminance is recoloured through the palette. Zone mode paints shadow clipping blue and highlight clipping red, like camera exposure aids. Output is PNG.

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