How to use it
- Choose or drop a photo.
- Set Grid spacing (distance between dots) and Grid angle.
- Adjust Dot size if the dots merge or look too faint.
- Pick One ink colour and its colours, or Colours from the photo.
- Download the picture.
How it works
The grid is rotated around the middle of the picture. For each grid point the tool averages the colour of nine sample points in the cell, converts it to brightness b (0 to 255) and draws a circle with radius cell × √(darkness / π), where darkness = 1 − b / 255. The circle’s area is then cell² × darkness.
Example
With spacing 10, a black area gets dots of radius 10 × √(1/π) = 5.64 and a mid-grey area (b = 127.5) dots of radius 3.99. White gets none.
Tips
- A high-contrast photo gives the clearest dots; raise contrast first with the image filters if it looks flat.
- Spacing is measured in pixels of the saved file; a 4000-pixel photo needs a larger spacing than a 800-pixel one for the same look.