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svg-character-animation

Animate characters built from SVG parts using GSAP and CSS transforms. Coordinate gestures and facial expressions, keep joints connected, and control playback by frame in Remotion or validate browser previews with HyperFrames.

OriginalShow the original description

Animate SVG character rigs with GSAP, CSS transforms, Remotion frame control, and HyperFrames-compatible browser previews.

Run score Not tested

See how to install

Good for

  • Coordinate head and arm movements
  • Check blinks, gaze, and mouth shapes
  • Control a GSAP timeline by frame in Remotion
  • Validate character motion in HyperFrames

Overview

What it does

Animate characters assembled from SVG parts using GSAP and CSS transforms. Adjust position, scale, and rotation, and combine several parts’ movements on a timeline. This lets you build actions such as moving an arm while tilting the head. The skill also covers checking that joints stay connected, that blinks, gaze, and mouth shapes are readable, and that poses last long enough to communicate emotion.

When it helps

Use it when you want to animate an SVG character whose parts are separate. Alongside browser playback, it supports playing animation in step with Remotion frames and checking motion in HyperFrames before final output.

Example requests

  • “Animate this SVG character’s head and right arm together.”
  • “Control the GSAP timeline using the current Remotion frame.”
  • “Check whether the joints separate and whether the expressions are readable.”

Notes

The character must be built from SVG parts. In Remotion, keep the GSAP timeline paused and control it from the current frame instead of letting it advance automatically. In HyperFrames, validate through the CLI before final output. The skill uses the MIT license.

This overview was written by AI (OpenAI Codex) from the public SKILL.md. Check the original below for the exact behavior.

Document check

AI checked the SKILL.md for operations that need care and for setup requirements. The score comes only from actually running the skill (hands-on test).

SafetyAre sending data, deleting files, and running commands disclosed?
AGoodThe provided code controls transforms and playback; it contains no external transmission, deletion, or credential access.
Easy setupDoes it need few tools or API keys, and are they documented?
BPartly lackingIt shows usage of GSAP, Remotion, and the HyperFrames CLI, but provides no installation instructions.

Not counted in the score. Rated by AI (OpenAI Codex) as of Oct 23, 2026. Treat it as a guide and read the original before installing.

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Files included (1)

  • SKILL.md1.6 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

SVG Character Animation

Use this skill when animating character rigs made from SVG parts.

Runtime Rules

  • Animate transforms (x, y, scale, rotation) rather than layout.
  • Use timelines for multi-part acting beats.
  • For SVG elements, use stable pivots (svgOrigin or correctly scoped transform origins).
  • In Remotion, do not let GSAP advance with requestAnimationFrame; drive a paused timeline from the current frame.

Browser Pattern

gsap.set("#arm_right", { svgOrigin: "390 310" });
const tl = gsap.timeline({ defaults: { ease: "power2.inOut" } });
tl.to("#head", { rotation: -8, duration: 0.2 })
  .to("#arm_right", { rotation: 35, duration: 0.4 }, "<");

Remotion Pattern

const frame = useCurrentFrame();
const progress = frame / durationInFrames;
timeline.progress(progress);

HyperFrames Pattern

Use HTML/SVG/GSAP components with deterministic timelines and validate via the HyperFrames CLI before final render.

Quality Checklist

  • Parts stay connected at pivots during motion.
  • Blinks, gaze, and mouth shapes are separate enough to read.
  • Pose holds are long enough to communicate emotion.
  • Frame sampling shows meaningful deltas, not frozen animation.

Sources

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