Using images

To import external images in Ultra Fractal, select a formula that contains one or more image parameters. Typically, these are coloring algorithms. A good starting point is the Image coloring algorithm in Standard.ucl.

In the formula parameters list, the image parameter shows up as a small preview:

Click the Open button to select an image on your computer. Hold down the Open button to open a menu with the option to clear the image.

Notes

Ultra Fractal imports JPEG, PNG, and BMP images. Only 24-bit or 32-bit BMP images are supported. Interlaced PNG files are not supported. The alpha channel from PNG files or 32-bit BMP files will be treated as transparency information for the image.
When selecting an image, by default Ultra Fractal starts in the Images folder inside the main Ultra Fractal documents folder. It is recommended to keep the images that you use with your fractals here. You can change the location of the Images folder in the Folders tab of the Options dialog.
When saving fractals or parameter sets, Ultra Fractal stores only a reference to the image used. When you re-open the fractal or parameter set, the Images folder is automatically searched for the image that is needed. Only if the image cannot be found, Ultra Fractal will ask you to locate the image.
You can write your own formulas that use imported images. See Image parameters.

Next: Coloring settings