Handitab

Halftone Generator

Turn a photo into a halftone pattern of dots whose size follows the brightness of the image, with adjustable dot spacing and colors.

About Halftone Generator

Halftone is a printing technique that reproduces shades with dots of varying size, as seen in newspapers and comic books. This generator divides the image into square cells, averages the brightness of each cell with the luma weights 0.299 red, 0.587 green, and 0.114 blue, and draws one circle per cell. Darker cells get larger dots, up to the point where neighbouring dots touch. The grid is straight, not rotated as in commercial printing screens.

How to use Halftone Generator

  1. Choose an image, or drag it onto the upload area. The file is read by your browser and is not uploaded.
  2. Set "Dot spacing", "Dot color", "Background color" and "Invert". The preview updates as you change them.
  3. Check the preview, then press "Download result" to save the file.

Questions about Halftone Generator

Which images make the best halftones?

Photos with strong contrast and a clear subject, such as a portrait against a plain background. Fine detail smaller than the dot spacing is lost, so raise the image contrast first or choose a smaller spacing.

Runs in your browser. Page last updated .

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