How to speed up animate in Mixamo for 3D models?

To speed up 3D model animations in Mixamo, use the "Playback Speed" slider in the preview panel (e.g., set to 1.5x or 2x) to instantly increase the animation’s tempo. This adjusts the frame rate relative to the original—no rekeyframing needed. Trim unused start/end frames in the editor to further shorten animations without losing key motion. For batch speed changes, download Mixamo animations first and use Blender’s "Time Remapping" feature—it lets you scale duration uniformly across multiple files, keeping workflow efficient.