Upload or paste an image to begin
Drop image here
Upload or paste an image to begin
Drop image here
Click the upload area, drag & drop an image file, or press Ctrl+V to paste from clipboard.
Hover over the image to preview colors, then click on a colony to set the target color. The app finds all connected pixel regions that match this color.
Click and drag to draw a free-form region of interest. Only colonies inside this boundary will be counted.
Color Sensitivity controls how broadly pixels match the target color. Min/Max Size filter colonies by area in pixels².
Click "Add" to place circles, "Delete" to remove circles. Both modes toggle off when clicked again.
A Add mode · D Delete mode · ⌘Z Undo · ⌘S Save