Blend soft colour blobs with curves, grain and glitter, then export a PNG. Drag the blobs on the canvas. No account, no cookies, and nothing leaves your browser.
Drag any blob to move it. Animated GIFs use the loop length and cap at 480px wide. SVG keeps the gradients, curves and pattern as layers; grain, glitter and some blend modes don't carry over, so Figma shows them approximately.