Create organic, fluid gradient backgrounds by placing color points on a canvas and blending them with Gaussian falloff. Control the number of points (1–15), radius, intensity, and falloff curve to shape the gradient. Set hue, saturation, and lightness ranges to constrain the random color generation, or randomize everything for unexpected results. Colors are blended in HSL space using circular hue interpolation for smooth transitions. Export as a high-resolution PNG at up to 3200×3200 pixels. The rendering runs in a Web Worker to keep the UI responsive. Note: this tool is computationally intensive and may drain battery on mobile devices.
TonniTools is built to run locally in your browser. Since no data ever leaves your device, everything works, even without internet.