How do I install the First Contentful Paint skill?

Run npx skillmds@latest add thedaviddias/first-contentful-paint in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the First Contentful Paint skill do?

Use when auditing slow page loads, heavy assets, or rendering delays related to Optimize first contentful paint. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes. It is listed under Coding & Dev Tools on SkillMD.

Is First Contentful Paint safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with First Contentful Paint?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is First Contentful Paint free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published First Contentful Paint?

thedaviddias (@thedaviddias) published this skill. Their other Agent Skills are listed on their SkillMD profile.

First Contentful Paint by thedaviddias

Name: First Contentful Paint
Author: thedaviddias

File contents

Optimize first contentful paint

FCP is the first visual signal that a page is loading—fast FCP reassures users that the site is responding, reducing perceived wait time and bounce rates.

Quick Reference

FCP measures time until first text/image appears—target under 1.8s
Eliminate render-blocking CSS and JavaScript
Inline critical CSS for above-fold content
Use preconnect for third-party origins

Check

Measure FCP using Lighthouse or PageSpeed Insights. Verify first content appears within 1.8 seconds.

Fix

Optimize FCP by eliminating render-blocking resources, inlining critical CSS, and reducing server response time.

Explain

Explain how FCP measures the time until the first text or image is painted, indicating page load has begun.

Code Review

Review the routes, assets, and loading behavior that affect Optimize first contentful paint. Flag exact files, requests, or rendering steps that add unnecessary network, CPU, or layout cost, and describe the measurement method used to confirm the issue.

For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/en/rules/performance/first-contentful-paint

Frequently asked questions

First Contentful Paint