SVG Studio is a free, browser-based animation editor that lets you turn static SVG files into keyframe animations and export self-contained SVGs with embedded CSS @keyframes. It features a timeline with per-property tracks for opacity, position, rotation, and scale, drag-and-drop layer management, record mode for automatic keyframe placement, multiple easing options, loop controls, and a 100-step undo history. No installation, no account, and no JavaScript runtime required in the exported files.