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Web Quality Skills

addyosmani/web-quality-skills

Help your AI assistant investigate slow pages, accessibility barriers and technical SEO issues.

Get started ↓

What is Web Quality Skills?

Prepared by LessAI Tools from public project documentation

Web Quality Skills is an independent collection of six skills for reviewing website quality. It covers loading speed, responsiveness, layout stability, accessibility, technical SEO and browser best practices. The workflow starts from available measurements, uses source inspection to investigate causes and asks for checks after changes.

It suits developers maintaining an existing website. Live browser tools can provide traces and Lighthouse checks; without them, the documentation describes other measurement tools and source review. Reports distinguish real-user data from a single test run. This listing is based on documentation, not a hands-on installation test.

Web Quality Skills setup documentation

What you need

  • A skill-compatible coding assistant and access to the website or source files you want to review.
  • For live measurements, an accessible running page and suitable browser or Lighthouse tools; Chrome DevTools MCP is optional.
  • Real-user analysis needs available field data; some sites have insufficient data. Your assistant account and any external services retain their own access and pricing terms.

Limitations and costs

  • The project is independent and does not represent Google or an official certification.
  • A lab score or source review does not prove real-user performance, accessibility compliance, security or search rankings.
  • Manual interaction checks and review of proposed code changes remain necessary; available results depend on your tools and access.
Setup and usage guide ↗

Based on public documentation; not individually installed and tested here.

Web Quality Skills use cases

  • Choose a complete website review or a focused performance, accessibility or SEO skill.
  • Use browser measurements and source code to investigate specific problems.
  • Prioritize fixes and repeat comparable checks after changes.

Official project & documentation

View source code ↗Setup and usage guide ↗

The project’s original description

Independent agent skills for evidence-led website quality reviews using browser measurements, Lighthouse guidance and source inspection.

Alternatives to Web Quality Skills for similar tasks

Compare plugins for similar tasks and check their setup requirements.

  • Cloudflare Security Audit — Review a codebase for security problems, verify the evidence and separate confirmed findings from open questions.
  • Claude-Red — Choose focused security-testing skills for authorized assessments, training and clear technical reports.
  • Sentry Agent Plugin — Help AI set up monitoring, investigate production errors, and configure alerts using Sentry context.

Sources and ranking

This directory lists AI development plugins with public source code and a clear purpose. Browse by task, then open an introduction to learn what a project does, who it is for, and what you need to get started. It covers selected projects, not every AI plugin.

How do the three plugin types differ?

Tool connections (MCP) let AI assistants use external tools such as browsers, code repositories and databases. MCP is the protocol used for these connections.

Reusable skills give a compatible AI assistant instructions and guidance for a particular task.

Editor plugins run inside the software you use to write code, adding AI chat, completions or suggested edits.

How does “Most starred” work?

Projects are sorted by their total GitHub stars. Stars indicate interest; they are not downloads, active users or quality scores. A skill pack counts as one project.

What does “Recently updated” mean?

It uses the most recent code push, which may not be a new release. The 7-day filter checks that project update time; ranking still uses all-time stars. Each introduction shows when its star count was collected.

Introductions are based on public project documentation. These projects have not each been installed and tested here. Check the project documentation for setup, compatibility and service costs.

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