Web Quality Audit
addyosmani/web-quality-skills
Run an evidence-led web quality audit covering performance, accessibility, SEO, best practices, and agentic browsing.
Lazy loading, skeletons, layout shift and loading states for AT users.
Install Performance Accessibility
$ npx skills add Community-Access/accessibility-agents --skill performance-accessibility -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Community-Access/accessibility-agents performance-accessibility --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/Community-Access/accessibility-agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/performance-accessibility .claude/skills/performance-accessibility && 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 "performance-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/performance-accessibility into .claude/skills/performance-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-accessibility", 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/Community-Access/accessibility-agents/tree/main/skills/performance-accessibilityType 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 Community-Access/accessibility-agents --skill performance-accessibility -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Community-Access/accessibility-agents performance-accessibility --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/performance-accessibility .agents/skills/performance-accessibility && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "performance-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/performance-accessibility into .agents/skills/performance-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-accessibility", 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 Community-Access/accessibility-agents --skill performance-accessibility -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Community-Access/accessibility-agents performance-accessibility --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/performance-accessibility .cursor/skills/performance-accessibility && 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 "performance-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/performance-accessibility into .cursor/skills/performance-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-accessibility", 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/Community-Access/accessibility-agents.git --path skills/performance-accessibility--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 Community-Access/accessibility-agents --skill performance-accessibility -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Community-Access/accessibility-agents performance-accessibility --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/performance-accessibility .gemini/skills/performance-accessibility && 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 "performance-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/performance-accessibility into .gemini/skills/performance-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-accessibility", 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 Community-Access/accessibility-agents performance-accessibilityInstalls 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 Community-Access/accessibility-agents --skill performance-accessibility -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/performance-accessibility .github/skills/performance-accessibility && 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 "performance-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/performance-accessibility into .github/skills/performance-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-accessibility", 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 Community-Access/accessibility-agents --skill performance-accessibility -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Community-Access/accessibility-agents performance-accessibility --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Community-Access/accessibility-agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/performance-accessibility .opencode/skills/performance-accessibility && 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 "performance-accessibility" agent skill from https://github.com/Community-Access/accessibility-agents/tree/main/skills/performance-accessibility into .opencode/skills/performance-accessibility/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-accessibility", 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
performance-accessibility- GitHub stars
- 421
- Token cost
- ~515 tokens
- SKILL.md length
- 195 words
- Files
- 2
- Skills in repo
- 108
- Repo updated
- First seen
- Licence
- MIT
At a glance
Lazy loading, skeletons, layout shift and loading states for AT users.
- Works in 7 steps: Lazy Loading — Preserve alt, size… → Skeleton Screens — aria-hidden="true" on… → CLS — Reserve space for async content,… → …
- Tasks that involve Accessibility
- SKILL.md covers Performance Accessibility…, Core Audit Areas, Key Conflicts and Output contract
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Performance Accessibility is an agent skill from Community-Access/accessibility-agents. Lazy loading, skeletons, layout shift and loading states for AT users.
Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Frontend & Design, covering Accessibility and Web performance. The repository describes itself as: Accessibility review agents for Claude Code, GitHub Copilot, and Claude Desktop. Eleven specialists that enforce WCAG 2.2 AA compliance so AI coding tools stop generating… The licence is MIT.
When your agent uses it
- Tasks that involve Accessibility
- Tasks that involve Web performance
Example prompts
- “/performance-accessibility”
Workflow steps
7 steps, taken from the first numbered list in SKILL.md.
- Lazy Loading — Preserve alt, size placeholders (prevent CLS), announce content arrival, "Load more" button for infinite scroll
- Skeleton Screens — aria-hidden="true" on skeletons, aria-busy="true" on container, announce load completion
- CLS — Reserve space for async content, avoid pushing focused elements, use aspect-ratio
- Code Splitting — Announce route transitions, accessible loading indicators, error states for failed chunks
- Progressive Enhancement — Core content works without JS, SSR provides accessible initial state
- Animation — prefers-reduced-motion, CSS over JS animations, disableable parallax
- Resource Priority — Critical a11y resources first, font-display: swap, above-fold accessible immediately
What it can do on your machine
Read from SKILL.md and the folder at commit decf6ba. 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
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Performance Accessibility loads about 515 tokens when it runs. Until then it costs about 24 tokens; SKILL.md has 195 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
The full file from Community-Access/accessibility-agents at commit decf6ba, republished under its MIT licence (© Community-Access). 195 words, ~515 tokens.
Download SKILL.mdSave it as
.claude/skills/performance-accessibility/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- performance-accessibility
- description
- Lazy loading, skeletons, layout shift and loading states for AT users.
- license
- MIT
- disable-model-invocation
- true
- metadata.tier
- specialist
- metadata.domain
- web
- metadata.output
- findings
- metadata.effort
- medium
- metadata.title
- Performance Accessibility
Performance Accessibility Specialist
You audit where web performance optimization intersects with accessibility. Performance techniques can introduce accessibility barriers if not implemented carefully.
Core Audit Areas
- Lazy Loading — Preserve
alt, size placeholders (prevent CLS), announce content arrival, "Load more" button for infinite scroll - Skeleton Screens —
aria-hidden="true"on skeletons,aria-busy="true"on container, announce load completion - CLS — Reserve space for async content, avoid pushing focused elements, use
aspect-ratio - Code Splitting — Announce route transitions, accessible loading indicators, error states for failed chunks
- Progressive Enhancement — Core content works without JS, SSR provides accessible initial state
- Animation —
prefers-reduced-motion, CSS over JS animations, disableable parallax - Resource Priority — Critical a11y resources first,
font-display: swap, above-fold accessible immediately
Key Conflicts
Each performance, with its risk and solution.
| Performance | Risk | Solution |
|---|---|---|
| Lazy images | Missing alt on placeholders | Preserve alt, size placeholder |
| Infinite scroll | Keyboard trap | "Load more" button alternative |
| Skeleton screens | SR reads placeholders | aria-hidden + aria-busy |
| Code splitting | Flash of inaccessible content | Accessible loading state |
Output contract
Return only JSON matching skills/a11y-core/schemas/findings.schema.json.
No prose, no summary, no restated instructions. One object, one array of findings.
Shared rules, dispatch contract and schemas: skills/a11y-core/SKILL.md.
Authoritative specifications for this skill: skills/a11y-core/references/sources.md.
© Community-Access, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in skills/performance-accessibility of Community-Access/accessibility-agents.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit decf6ba
Compare with similar skills
Performance Accessibility 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 |
|---|---|---|---|---|---|---|
| Performance Accessibility this skillCommunity-Access/accessibility-agents | 421 | — | ~515 | Automated safety check: Pass | MIT | |
| 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 | 156 | — | ~3.4k | Automated safety check: Pass | MIT | |
| Accessibility Checkmakifbaysal/tasktrooper | 109 | — | ~1k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Web Quality Audit
midudev/100cosas.dev
Comprehensive web quality audit covering performance, accessibility, SEO, and best practices.
Optimize Load
textura-agency/next16-claude-starter
Get a page into Lighthouse's green zone on desktop and mobile, for people AND for the robot form crawlers get — build it, audit all four categories (Performance, Accessibility, Best Practices, SEO)…
Accessibility
ericrisco/rsc-harness
A skill your agent uses when making a web UI conform to WCAG 2.2 Level AA — axe-core or Lighthouse a11y violations, keyboard operability, focus management, ARIA roles/names/live regions, contrast…
Accessibility Check
makifbaysal/tasktrooper
A skill your agent uses when a task changes any screen, form, dialog, menu or control - Lighthouse/axe scan of the changed screens, a keyboard walk, and the thresholds that fail a task
Web Perf
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Diagnose page-load and interaction performance using browser traces, network evidence, and source code.
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Related
Categories
Questions about Performance Accessibility
What does Performance Accessibility do?
Lazy loading, skeletons, layout shift and loading states for AT users. Performance Accessibility is an agent skill from Community-Access/accessibility-agents. Lazy loading, skeletons, layout shift and loading states for AT users.
When should I use Performance Accessibility?
Performance Accessibility fits situations like: tasks that involve Accessibility; tasks that involve Web performance.
How do I install Performance Accessibility in Claude Code?
Run `npx skills add Community-Access/accessibility-agents --skill performance-accessibility -a claude-code`. Or copy the skill folder (skills/performance-accessibility in Community-Access/accessibility-agents) into .claude/skills/performance-accessibility in your project. Claude Code loads it when a task matches its description.
How do I install Performance Accessibility in Codex?
Run `npx skills add Community-Access/accessibility-agents --skill performance-accessibility -a codex`. Or copy the skill folder (skills/performance-accessibility in Community-Access/accessibility-agents) into .agents/skills/performance-accessibility in your project. Codex loads it when a task matches its description.
Can I use Performance Accessibility 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 Community-Access/accessibility-agents --skill performance-accessibility -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/performance-accessibility, .gemini/skills/performance-accessibility, .github/skills/performance-accessibility and .opencode/skills/performance-accessibility in your project.
What does Performance Accessibility need to run?
SKILL.md names no scripts, command-line tools or credentials: Performance Accessibility is instructions for the agent only.
Does Performance Accessibility access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Performance Accessibility 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 Performance Accessibility use?
Performance Accessibility is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Performance Accessibility use?
About 515 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Performance Accessibility?
Skills that share tags, products or a category with Performance Accessibility: 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, 156 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Performance Accessibility?
Community-Access (a GitHub organization) maintains it in Community-Access/accessibility-agents, which has 421 GitHub stars. The repository holds 108 skills in this directory. The repository was last updated on September 23, 2026.
Source: Community-Access/accessibility-agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.