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React Render Profiler

Category: Engineering  ·  Sub-category: frontend  ·  Last updated:
fw:react
Find and fix wasteful React re-renders by classifying the cause — unstable prop/callback/object identities, context value churn, state lifted too high, expensive work in render, or unvirtualized lists — confirming it with a measurement, then applying the one targeted fix and re-measuring. Use when a React UI is janky, slow to type in, or re-renders far more than the data actually changed.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

A janky React UI is almost always re-rendering more than the data changed — and the reflex fix, wrapping everything in useMemo/memo, usually adds cost and complexity without helping, because it doesn't address why the component re-rendered. This skill makes the work diagnostic: name the cause class, prove it with a measurement, apply exactly one matching fix, and re-measure. No blind memoization.

What this skill does

React Render Profiler is a community-contributed Claude Code skill in the frontend sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/react-render-profiler/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when a React UI is janky, slow to type in, or re-renders far more than the data actually changed.

Who uses this skill

The React Render Profiler Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 161,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/react-render-profiler
curl -L https://claudskills.com/skills/react-render-profiler/SKILL.md \
  -o ~/.claude/skills/react-render-profiler/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/react-render-profiler/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/react-render-profiler/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\react-render-profiler\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the React Render Profiler Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/react-render-profiler/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the React Render Profiler skill do?
Find and fix wasteful React re-renders by classifying the cause — unstable prop/callback/object identities, context value churn, state lifted too high, expensive work in render, or unvirtualized lists — confirming it with a measurement, then applying the one targeted fix and re-measuring. Use when a React UI is janky, slow to type in, or re-renders far more than the data actually changed.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the React Render Profiler skill?
Use React Render Profiler when your Claude Code task falls under the Engineering category — specifically in the frontend area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use React Render Profiler" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the React Render Profiler skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. React Render Profiler is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
imtiazrayhan. (2026). React Render Profiler [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/react-render-profiler/
BibTeX
@misc{react-render-profiler-2026,
  author    = {imtiazrayhan},
  title     = {React Render Profiler [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/react-render-profiler/}
}

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Security scan

Grade A · scanned 2026-07-26 — free static scan against the OWASP Agentic Skills Top 10.

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