Data Viz Renderer
zebbern/claude-code-guide
Generate self-contained HTML/SVG infographics from JSON data, including stat cards, bar charts, flow diagrams, and mixed dashboards.
Write meaningful alternative text for images, charts, diagrams, and visual content.
Install Alt Text Design
$ npx skills add Owl-Listener/inclusive-design-skills --skill alt-text-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Owl-Listener/inclusive-design-skills alt-text-design --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/Owl-Listener/inclusive-design-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/accessible-content/skills/alt-text-design .claude/skills/alt-text-design && 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 "alt-text-design" agent skill from https://github.com/Owl-Listener/inclusive-design-skills/tree/main/accessible-content/skills/alt-text-design into .claude/skills/alt-text-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alt-text-design", 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/Owl-Listener/inclusive-design-skills/tree/main/accessible-content/skills/alt-text-designType 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 Owl-Listener/inclusive-design-skills --skill alt-text-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Owl-Listener/inclusive-design-skills alt-text-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/accessible-content/skills/alt-text-design .agents/skills/alt-text-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "alt-text-design" agent skill from https://github.com/Owl-Listener/inclusive-design-skills/tree/main/accessible-content/skills/alt-text-design into .agents/skills/alt-text-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alt-text-design", 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 Owl-Listener/inclusive-design-skills --skill alt-text-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Owl-Listener/inclusive-design-skills alt-text-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/accessible-content/skills/alt-text-design .cursor/skills/alt-text-design && 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 "alt-text-design" agent skill from https://github.com/Owl-Listener/inclusive-design-skills/tree/main/accessible-content/skills/alt-text-design into .cursor/skills/alt-text-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alt-text-design", 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/Owl-Listener/inclusive-design-skills.git --path accessible-content/skills/alt-text-design--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 Owl-Listener/inclusive-design-skills --skill alt-text-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Owl-Listener/inclusive-design-skills alt-text-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/accessible-content/skills/alt-text-design .gemini/skills/alt-text-design && 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 "alt-text-design" agent skill from https://github.com/Owl-Listener/inclusive-design-skills/tree/main/accessible-content/skills/alt-text-design into .gemini/skills/alt-text-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alt-text-design", 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 Owl-Listener/inclusive-design-skills alt-text-designInstalls 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 Owl-Listener/inclusive-design-skills --skill alt-text-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/accessible-content/skills/alt-text-design .github/skills/alt-text-design && 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 "alt-text-design" agent skill from https://github.com/Owl-Listener/inclusive-design-skills/tree/main/accessible-content/skills/alt-text-design into .github/skills/alt-text-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alt-text-design", 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 Owl-Listener/inclusive-design-skills --skill alt-text-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Owl-Listener/inclusive-design-skills alt-text-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/accessible-content/skills/alt-text-design .opencode/skills/alt-text-design && 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 "alt-text-design" agent skill from https://github.com/Owl-Listener/inclusive-design-skills/tree/main/accessible-content/skills/alt-text-design into .opencode/skills/alt-text-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alt-text-design", 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
alt-text-design- GitHub stars
- 105
- Token cost
- ~946 tokens
- SKILL.md length
- 513 words
- Files
- 1
- Skills in repo
- 55
- Repo updated
- First seen
- Licence
- MIT
At a glance
Write meaningful alternative text for images, charts, diagrams, and visual content.
- Works in 4 steps: Is the image purely decorative? → Is the image functional? → Is the image informative? → …
- Reviewing alt text
- SKILL.md covers Core Principle, Decision Tree, Writing Good Alt Text and Specific Content Types, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Alt Text Design is an agent skill from Owl-Listener/inclusive-design-skills. Write meaningful alternative text for images, charts, diagrams, and visual content. Use when creating or reviewing alt text, image descriptions, chart summaries, or any visual content that needs a text equivalent. Triggers on: alt text, image description, alternative text, screen reader, decorative image, chart description, infographic, data visualisation, complex image, meaningful alt.
Its SKILL.md is about 950 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Media & Creative, covering Data visualization, Accessibility and Infographics. The repository describes itself as: Inclusive design skills for AI coding agents — from cognitive accessibility to adaptive interfaces, inclusive research, and accessibility decision-making. The licence is MIT.
When your agent uses it
- Reviewing alt text
- Image descriptions
- Chart summaries
- Any visual content that needs a text equivalent
Example prompts
- “/alt-text-design”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 6e0740f. 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
Alt Text Design loads about 946 tokens when it runs. Until then it costs about 101 tokens; SKILL.md has 513 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 Owl-Listener/inclusive-design-skills at commit 6e0740f, republished under its MIT licence (© Owl-Listener). 513 words, ~946 tokens.
Download SKILL.mdSave it as
.claude/skills/alt-text-design/SKILL.md (or your agent's skills folder).- name
- alt-text-design
- description
- Write meaningful alternative text for images, charts, diagrams, and visual content. Use when creating or reviewing alt text, image descriptions, chart summaries, or any visual content that needs a text equivalent. Triggers on: alt text, image description, alternative text, screen reader, decorative image, chart description, infographic, data visualisation, complex image, meaningful alt.
Alt Text Design
Write alt text that conveys the same information and purpose as the visual content — not just what the image looks like, but what it communicates.
Core Principle
Alt text answers the question: if this image disappeared, what information would be lost? That's what needs to be in the alt text.
Decision Tree
1. Is the image purely decorative?
- Background textures, dividers, visual flourishes
- Images that repeat information already in adjacent text
- Action: use empty alt (alt="") so screen readers skip it
2. Is the image functional?
- A linked logo, an icon button, an image link
- Action: alt text describes the function, not the image
- Logo linking to homepage: alt="Company name — home"
- Search icon button: alt="Search"
- NOT alt="magnifying glass icon"
3. Is the image informative?
- Photos, illustrations, screenshots that add information
- Action: describe the information the image conveys
- Photo of a damaged product: alt="Crack running along the bottom edge of the screen"
- NOT alt="Photo of a phone" or alt="product-image-032.jpg"
4. Is the image complex?
- Charts, graphs, diagrams, infographics, maps
- Action: short alt text summarising the key message PLUS a longer description nearby (in the page text or a linked detail)
- Bar chart: alt="Bar chart showing sales growth — details below" followed by a text summary of the data
- NOT alt="bar chart" and not the entire data set in the alt attribute
Writing Good Alt Text
Be Specific
- Bad: "A group of people"
- Good: "Three team members reviewing a prototype on a whiteboard"
Convey Purpose, Not Just Appearance
- Bad: "Red circle with a number"
- Good: "3 unread notifications"
Match the Context
The same image needs different alt text in different contexts:
- On a recipe page: "Finished risotto in a white bowl, garnished with parmesan and basil"
- On a kitchenware product page: "Round white ceramic serving bowl, 22cm diameter"
Show full SKILL.md (215 more words)Show less
Keep It Concise
- Aim for one sentence, two at most
- Don't start with "Image of..." or "Picture of..." — screen readers already announce it as an image
- For complex images: keep alt text short and provide detail elsewhere
Specific Content Types
Charts and Graphs
- Alt text: state the type and the key takeaway
- Provide a text summary or data table nearby
- "Line chart showing website traffic doubling between January and June 2026. Full data in the table below."
Screenshots
- Describe what the screenshot shows that matters to the reader
- "Settings panel with the notifications toggle switched off"
- NOT "Screenshot of the settings page"
Icons with Labels
- If the icon has a visible text label, the icon is decorative (alt="")
- If the icon is the only indicator, the alt text must convey the meaning
Images of Text
- Avoid images of text wherever possible — use real text
- If unavoidable: the alt text must contain the full text in the image
Assessment Questions
- Does every non-decorative image have meaningful alt text?
- Does the alt text convey purpose, not just appearance?
- Are decorative images marked with empty alt?
- Do complex images have both short alt text and a longer description?
- Would someone using a screen reader get the same information as someone seeing the image?
© Owl-Listener, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in accessible-content/skills/alt-text-design of Owl-Listener/inclusive-design-skills.
Open the folder on GitHubat commit 6e0740f
Compare with similar skills
Alt Text Design 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 |
|---|---|---|---|---|---|---|
| Alt Text Design this skillOwl-Listener/inclusive-design-skills | 105 | — | ~946 | Automated safety check: Pass | MIT | |
| Data Viz Rendererzebbern/claude-code-guide | 4.7k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Visual Designaws-samples/sample-strands-agent-with-agentcore | 195 | — | ~1.5k | Automated safety check: Pass | MIT | |
| Strategy Consulting Visualizationkgraph57/mckinsey-style-visualization-skill | 129 | — | ~3.2k | Automated safety check: Pass | MIT | |
| Tufte Reportglebis/claude-skills | 391 | — | ~2.4k | Automated safety check: Pass | MIT | |
| Microsim Generatordmccreary/ibook-skills | 105 | — | ~11k | Automated safety check: Pass | None |
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- Official
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aws-samples/sample-strands-agent-with-agentcore
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Tufte Report
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Create Tufte-inspired data reports and infographic dashboards as standalone HTML files.
Microsim Generator
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Maps a feature across a range of vision, hearing, motor and cognitive ability to find where the design starts to fail, and to explain accessibility scope to stakeholders.
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Related
Questions about Alt Text Design
What does Alt Text Design do?
Write meaningful alternative text for images, charts, diagrams, and visual content. Alt Text Design is an agent skill from Owl-Listener/inclusive-design-skills. Write meaningful alternative text for images, charts, diagrams, and visual content.
When should I use Alt Text Design?
Alt Text Design fits situations like: reviewing alt text; image descriptions; chart summaries; any visual content that needs a text equivalent.
How do I install Alt Text Design in Claude Code?
Run `npx skills add Owl-Listener/inclusive-design-skills --skill alt-text-design -a claude-code`. Or copy the skill folder (accessible-content/skills/alt-text-design in Owl-Listener/inclusive-design-skills) into .claude/skills/alt-text-design in your project. Claude Code loads it when a task matches its description.
How do I install Alt Text Design in Codex?
Run `npx skills add Owl-Listener/inclusive-design-skills --skill alt-text-design -a codex`. Or copy the skill folder (accessible-content/skills/alt-text-design in Owl-Listener/inclusive-design-skills) into .agents/skills/alt-text-design in your project. Codex loads it when a task matches its description.
Can I use Alt Text Design 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 Owl-Listener/inclusive-design-skills --skill alt-text-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/alt-text-design, .gemini/skills/alt-text-design, .github/skills/alt-text-design and .opencode/skills/alt-text-design in your project.
What does Alt Text Design need to run?
SKILL.md names no scripts, command-line tools or credentials: Alt Text Design is instructions for the agent only.
Does Alt Text Design 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 Alt Text Design 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 Alt Text Design use?
Alt Text Design is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Alt Text Design use?
About 946 tokens (SKILL.md is roughly 3.8k 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 Alt Text Design?
Skills that share tags, products or a category with Alt Text Design: Data Viz Renderer (zebbern/claude-code-guide, 4.7k stars), Visual Design (aws-samples/sample-strands-agent-with-agentcore, 195 stars), Strategy Consulting Visualization (kgraph57/mckinsey-style-visualization-skill, 129 stars) and Tufte Report (glebis/claude-skills, 391 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Alt Text Design?
Owl-Listener (a GitHub user) maintains it in Owl-Listener/inclusive-design-skills, which has 105 GitHub stars. The repository holds 55 skills in this directory. The repository was last updated on June 9, 2026.
Source: Owl-Listener/inclusive-design-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.