Web Quality Audit
addyosmani/web-quality-skills
Run an evidence-led web quality audit covering performance, accessibility, SEO, best practices, and agentic browsing.
Run a pre-deploy browser audit of a live, preview, or local web page for accessibility, SEO, Lighthouse quality, and critical UX issues.
Install Browser Audit
$ npx skills add aiskillstore/marketplace --skill browser-audit -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace browser-audit --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/johnwayneeee/browser-audit .claude/skills/browser-audit && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "browser-audit" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/johnwayneeee/browser-audit into .claude/skills/browser-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-audit", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/johnwayneeee/browser-auditType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill browser-audit -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace browser-audit --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/johnwayneeee/browser-audit .agents/skills/browser-audit && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "browser-audit" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/johnwayneeee/browser-audit into .agents/skills/browser-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-audit", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill browser-audit -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace browser-audit --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/johnwayneeee/browser-audit .cursor/skills/browser-audit && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "browser-audit" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/johnwayneeee/browser-audit into .cursor/skills/browser-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-audit", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/johnwayneeee/browser-audit--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill browser-audit -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace browser-audit --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/johnwayneeee/browser-audit .gemini/skills/browser-audit && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "browser-audit" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/johnwayneeee/browser-audit into .gemini/skills/browser-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-audit", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace browser-auditInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill browser-audit -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/johnwayneeee/browser-audit .github/skills/browser-audit && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "browser-audit" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/johnwayneeee/browser-audit into .github/skills/browser-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-audit", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill browser-audit -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace browser-audit --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/johnwayneeee/browser-audit .opencode/skills/browser-audit && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "browser-audit" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/johnwayneeee/browser-audit into .opencode/skills/browser-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-audit", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
browser-audit- GitHub stars
- 430
- Token cost
- ~1.5k tokens
- SKILL.md length
- 627 words
- Files
- 4 (incl. references)
- Skills in repo
- 1,108
- Repo updated
- First seen
- Licence
- None found
At a glance
Run a pre-deploy browser audit of a live, preview, or local web page for accessibility, SEO, Lighthouse quality, and critical UX issues.
- Works in 6 steps: Confirm scope: target URL, viewport(s),… → Open the page in a browser. For… → Run automated checks → …
- Asked to audit a page/site before deployment
- SKILL.md covers Workflow, Automation Guidance, Standards and Report Format, plus 1 more section
- Calls lighthouse
What it does
Browser Audit is an agent skill from aiskillstore/marketplace. Run a pre-deploy browser audit of a live, preview, or local web page for accessibility, SEO, Lighthouse quality, and critical UX issues. Use when asked to audit a page/site before deployment, check WCAG 2.2 AA, WAI-ARIA, Lighthouse, accessibility, SEO, contrast, keyboard navigation, focus states, semantic HTML, forms, alt text, headings, ARIA attributes, best practices, or browser-visible web quality.
Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `agents/openai.yaml`, `references/audit-criteria.md` and `skill-report.json`).
It sits in Frontend & Design, covering Accessibility and Web performance. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Asked to audit a page/site before deployment
- Check WCAG 2.2 AA
- Keyboard navigation
- ARIA attributes
Example prompts
- “/browser-audit”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Confirm scope: target URL, viewport(s), auth state, and key user flows. If unspecified, audit the provided/current page at desktop and…
- Open the page in a browser. For localhost or preview URLs, use the available browser automation/in-app browser tooling. Capture at least…
- Run automated checks
- Run manual browser checks
- Map findings to severity and priority. Do not report issues from static source inspection alone unless they are confirmed in the rendered…
- Produce the structured report in the format below. Explicitly mark manual checks that could not be completed.
What it can do on your machine
Read from SKILL.md and the folder at commit ad8daf7. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
lighthouse
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
casely.digital
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Browser Audit loads about 1.5k tokens when it runs, and up to ~3k if it reads all its reference files. Until then it costs about 105 tokens; SKILL.md has 627 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 627 words (~1,537 tokens).
“Audit the rendered page in a real browser before deployment. Treat Lighthouse and automated accessibility checks as strong signals, not as a complete conformance claim. Always include manual browser checks for anything automation cannot prove reliably.”
- name
- browser-audit
Files
SKILL.md and 3 other files (references) in skills/johnwayneeee/browser-audit of aiskillstore/marketplace.
- SKILL.md
- agents/openai.yaml
- references/audit-criteria.md
- skill-report.json
Open the folder on GitHubat commit ad8daf7
Compare with similar skills
Browser Audit next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Browser Audit this skillaiskillstore/marketplace | 430 | — | ~1.5k | Automated safety check: Pass | None | |
| Web Quality Auditaddyosmani/web-quality-skills | 2.9k | — | ~2.6k | Automated safety check: Pass | MIT | |
| Web Quality Auditmidudev/100cosas.dev | 114 | 3 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Optimize Loadtextura-agency/next16-claude-starter | 132 | — | ~4.6k | Automated safety check: Notes | Unlicense | |
| Accessibilityericrisco/rsc-harness | 167 | — | ~3.4k | Automated safety check: Pass | MIT | |
| Accessibility Checkmakifbaysal/tasktrooper | 109 | — | ~1.1k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Browser Audit
What does Browser Audit do?
Run a pre-deploy browser audit of a live, preview, or local web page for accessibility, SEO, Lighthouse quality, and critical UX issues. Browser Audit is an agent skill from aiskillstore/marketplace. Run a pre-deploy browser audit of a live, preview, or local web page for accessibility, SEO, Lighthouse quality, and critical UX issues.
When should I use Browser Audit?
Browser Audit fits situations like: asked to audit a page/site before deployment; check WCAG 2.2 AA; keyboard navigation; ARIA attributes.
How do I install Browser Audit in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill browser-audit -a claude-code`. Or copy the skill folder (skills/johnwayneeee/browser-audit in aiskillstore/marketplace) into .claude/skills/browser-audit in your project. Claude Code loads it when a task matches its description.
How do I install Browser Audit in Codex?
Run `npx skills add aiskillstore/marketplace --skill browser-audit -a codex`. Or copy the skill folder (skills/johnwayneeee/browser-audit in aiskillstore/marketplace) into .agents/skills/browser-audit in your project. Codex loads it when a task matches its description.
Can I use Browser Audit in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill browser-audit -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/browser-audit, .gemini/skills/browser-audit, .github/skills/browser-audit and .opencode/skills/browser-audit in your project.
What does Browser Audit need to run?
Going by SKILL.md and its folder, Browser Audit needs the command-line tools its instructions call (lighthouse).
Does Browser Audit access the network?
SKILL.md names 1 domain. As links in the text: casely.digital. This is read from the text; nothing was executed.
Is Browser Audit safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Browser Audit use?
No licence was found for Browser Audit or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Browser Audit use?
About 1.5k tokens (SKILL.md is roughly 6.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.4k tokens, read only when the agent opens those files.
What are the alternatives to Browser Audit?
Skills that share tags, products or a category with Browser Audit: Web Quality Audit (addyosmani/web-quality-skills, 2.9k stars), Web Quality Audit (midudev/100cosas.dev, 114 stars), Optimize Load (textura-agency/next16-claude-starter, 132 stars) and Accessibility (ericrisco/rsc-harness, 167 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Browser Audit?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,108 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.