60fps-animation

60fps-animation is a skill for Claude Code from 2233admin/design-pipeline. It costs 79 tokens per session (2,678 once invoked), scanned A, a copy of 60fps-animation, MIT.

Guidance for making web animations run smoothly by changing how visual properties are animated. It explains why moving an element with transforms and transparency is often smoother than changing its size or position directly.

In plain words
What is it for?
Use it to improve hover and scroll effects, animate size or position changes, handle automatic-height animations, and review animation performance.
Why use it?
It helps fix stuttering animations and reduce the browser work that can cause dropped frames.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the web-animation-skills plugin — 9 skills shipped together

Good fit Use it to improve hover and scroll effects, animate size or position changes, handle automatic-height animations, and review animation performance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/2233admin/design-pipeline/60fps-animation
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add 2233admin/design-pipeline --skill 60fps-animation
Clone the repo
git clone --depth 1 https://github.com/2233admin/design-pipeline

Made for: Claude Code.

Or install web-animation-skills, the plugin that ships this one along with the rest of its 9 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for 60fps-animation

README.md
[![agentmods](https://agentmods.dev/badge/skills/2233admin/design-pipeline/60fps-animation/github.svg)](https://agentmods.dev/skills/2233admin/design-pipeline/60fps-animation)
Your own site
<a href="https://agentmods.dev/skills/2233admin/design-pipeline/60fps-animation"><img src="https://agentmods.dev/badge/skills/2233admin/design-pipeline/60fps-animation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for 60fps-animation

Your own site · 80×15
<a href="https://agentmods.dev/skills/2233admin/design-pipeline/60fps-animation"><img src="https://agentmods.dev/badge/skills/2233admin/design-pipeline/60fps-animation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,678 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00079 $0.02678
Opus 5 $0.00039 $0.01339
Sonnet 5 $0.00016 $0.00536
Haiku 4.5 $0.00008 $0.00268

Measured 6d ago against content hash deb5d78aabae, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

60fps-animation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to 60fps-animation — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skill/references/iart-motion-skills/upstream/web-animation-skills/skills/60fps-animation/SKILL.md · 211 lines

How it starts

The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Performant Web Animation

Eliminate the #1 cause of janky web animation: animating properties that force the browser to recalculate layout (reflow) or repaint on every frame. The browser renders in stages — layout → paint → composite. Animating width, height, top, left, margin, padding, box-shadow, or filter re-runs layout and/or paint each frame, blocking the main thread. Animating transform and opacity runs entirely on the compositor (often the GPU), skipping layout and paint, which is what makes animation smooth at 60/120fps.

When to use

Use when an animation stutters or drops frames, when a hover/scroll effect feels heavy, when animating size/position/shadow, when a layout change needs to animate smoothly (cards reordering, an element moving between containers), when animating height: auto, or when reviewing animation code for performance.

Core rule: animate only transform and opacity

Map every "expensive" animation to a cheap equivalent.

Animating (expensive) Triggers Replace with (cheap)
width / height Layout + Paint transform: scaleX()/scaleY() (+ FLIP for true size)
top / left / margin Layout + Paint transform: translate()
box-shadow Paint Animate opacity of a pseudo-element holding the shadow
filter: blur() Paint (heavy) Cross-fade two layers via opacity, or accept sparingly
background-position Paint transform: translate() on a child layer
color / background Paint Often acceptable; or cross-fade layers

Position and size via transform

/* BAD: animates layout every frame */
.box { transition: left 300ms, width 300ms; left: 0; width: 100px; }
.box:hover { left: 200px; width: 200px; }

/* GOOD: compositor-only */
.box {
  transition: transform 300ms ease;
  transform: translateX(0) scaleX(1);
  transform-origin: left center;
}
.box:hover { transform: translateX(200px) scaleX(2); }

scaleX distorts inner content (text stretches). For true resizing without distortion, use FLIP.

Read the full file on GitHub · 211 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 211 lines · 79 tokens per session scan A deb5d78aabae

Subscribe to this mod's changes

60fps-animation is a skill published in the GitHub repository 2233admin/design-pipeline (9 stars, last pushed 7d ago), licensed MIT. It adds 79 tokens to every session and 2,678 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to 60fps-animation, differing in 0 lines, and is treated as a copy.

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