web-perf
Audit, diagnose, or optimize website loading and interaction performance, Core Web Vitals, and Lighthouse performance scores.
- License
- Apache-2.0
- SKILL.md tokens
- 2,063
- Bundled files
- 0
- Bundled tokens (estimated)
- 0
Cost per 1,000 loads
Estimated input cost per 1,000 loads of SKILL.md only (characters ÷ 4). Bundled files, output tokens and execution are excluded.
| Model | Input / 1M tokens | 1,000 loads |
|---|---|---|
| Claude Opus 5 | $5.00 | $10.31 |
| Claude Sonnet 5 | $2.00 | $4.13 |
| Claude Haiku 4.5 | $1.00 | $2.06 |
Safety flags
Detected automatically from files; not a security audit.
- Runs scripts
- No
- Network access
- Yes
- Shell commands
- No
Works with
Open SKILL.md format
- Claude Code
- Codex
- Cursor
- GitHub Copilot
- Gemini CLI
- OpenCode
- Goose
Install
npx skills add cloudflare/skills --skill web-perfLast verified:
web-perf FAQ
What does the web-perf skill do?
Audit, diagnose, or optimize website loading and interaction performance, Core Web Vitals, and Lighthouse performance scores. Source: https://github.com/cloudflare/skills/blob/main/skills/web-perf/SKILL.md
What does the web-perf skill cost to load?
SKILL.md is about 2,063 tokens. Estimated input cost per 1,000 loads: Claude Opus 5 $10.31; Claude Sonnet 5 $4.13; Claude Haiku 4.5 $2.06. Estimated input cost per 1,000 loads of SKILL.md only (characters ÷ 4). Bundled files, output tokens and execution are excluded. Prices: https://docs.anthropic.com/en/docs/about-claude/pricing
How do I install the web-perf skill?
Skills CLI: npx skills add cloudflare/skills --skill web-perf. Claude Code: /plugin marketplace add cloudflare/skills, then install the plugin from that marketplace. Download the web-perf skill folder as a ZIP and upload it in Claude.ai skills settings.
Is the web-perf skill safe?
Automatically detected flags: network access. Flags are detected automatically from the skill's files and are not a security audit; review the SKILL.md before installing.