About this tool
Greyscale Converter offers four conversion algorithms — Luminosity (perceptual), Average, Desaturate and Luma — giving you control over the character of your black and white result. Add an optional colour tint for duotone-style effects.
How it works
- 1Upload your image.
- 2Choose a conversion method: Luminosity, Average, Desaturate or Luma.
- 3Optionally enable a colour tint and adjust its opacity.
- 4Download your greyscale or tinted image.
Common use cases
- ✓Creating black and white artistic photos
- ✓Preparing images for single-colour printing
- ✓Designing accessible UI mockups
- ✓Creating consistent brand imagery
Privacy first. Greyscale Converter runs entirely inside your browser using the HTML5 Canvas API. Your images are never uploaded to any server, stored anywhere or shared with third parties. Everything happens locally on your device.
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