Web Artifacts Builder
anthropics/skills
Builds multi-component claude.ai HTML artifacts as a small React, TypeScript and Tailwind project, then bundles it into one shareable HTML file.
A skill your agent uses when reviewing image assets, markup, and CDN or build transforms related to Fix broken images.
Install Broken Images
$ npx skills add thedaviddias/Front-End-Checklist --skill broken-images -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist broken-images --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/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/broken-images .claude/skills/broken-images && 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 "broken-images" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/broken-images into .claude/skills/broken-images/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "broken-images", 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/thedaviddias/Front-End-Checklist/tree/main/skills/broken-imagesType 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 thedaviddias/Front-End-Checklist --skill broken-images -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist broken-images --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/broken-images .agents/skills/broken-images && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "broken-images" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/broken-images into .agents/skills/broken-images/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "broken-images", 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 thedaviddias/Front-End-Checklist --skill broken-images -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist broken-images --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/broken-images .cursor/skills/broken-images && 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 "broken-images" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/broken-images into .cursor/skills/broken-images/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "broken-images", 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/thedaviddias/Front-End-Checklist.git --path skills/broken-images--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 thedaviddias/Front-End-Checklist --skill broken-images -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist broken-images --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/broken-images .gemini/skills/broken-images && 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 "broken-images" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/broken-images into .gemini/skills/broken-images/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "broken-images", 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 thedaviddias/Front-End-Checklist broken-imagesInstalls 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 thedaviddias/Front-End-Checklist --skill broken-images -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/broken-images .github/skills/broken-images && 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 "broken-images" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/broken-images into .github/skills/broken-images/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "broken-images", 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 thedaviddias/Front-End-Checklist --skill broken-images -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist broken-images --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/broken-images .opencode/skills/broken-images && 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 "broken-images" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/broken-images into .opencode/skills/broken-images/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "broken-images", 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
broken-images- GitHub stars
- 74k
- Token cost
- ~728 tokens
- SKILL.md length
- 362 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing image assets, markup, and CDN or build transforms related to Fix broken images.
- Reviewing image assets
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Build transforms related to Fix broken images
What it does
Broken Images is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing image assets, markup, and CDN or build transforms related to Fix broken images. Check encoded size, rendered size, loading strategy, and above-the-fold impact together.
Its SKILL.md is about 730 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
It sits in Frontend & Design. The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing image assets
- Build transforms related to Fix broken images
Example prompts
- “/broken-images”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. 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
Links to these hosts (documentation or services it may open):
frontendchecklist.io
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
Broken Images loads about 728 tokens when it runs, and up to ~1.9k if it reads all its reference files. Until then it costs about 50 tokens; SKILL.md has 362 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 thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 362 words, ~728 tokens.
Download SKILL.mdSave it as
.claude/skills/broken-images/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- broken-images
- description
- Use when reviewing image assets, markup, and CDN or build transforms related to Fix broken images. Check encoded size, rendered size, loading strategy, and above-the-fold impact together.
- metadata.category
- images
- metadata.priority
- high
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 15
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/images/broken-images
Fix broken images
A broken image shows an ugly placeholder icon, breaks visual layouts, and communicates that the site is poorly maintained. If the broken image is the Largest Contentful Paint element, it also harms LCP scores. On e-commerce sites, a missing product image can directly reduce purchase intent.
Quick Reference
- Broken images show an icon and console error—validate all
<img src>paths at build time - Use
onerrorhandlers to swap broken<img>elements to fallback images - Set
this.onerror=nullinside the handler to prevent infinite error loops - Test with DevTools Network tab blocked requests to verify fallback behaviour
Check
Scan all <img> src attributes and CSS background-image URLs in this codebase. Identify: 1) Any relative or absolute paths that point to files not present in the project. 2) Any <img> elements without an onerror handler or fallback mechanism. 3) Hardcoded external image URLs that may become unavailable. 4) Dynamic image paths constructed from user data without existence checks. Report each broken or potentially broken image with its file path and line number.
Fix
For each broken image: 1) Correct the file path if the image exists but the path is wrong. 2) Add the missing image asset if it was omitted. 3) For images that may fail at runtime, add an onerror handler: onerror="this.src='/images/fallback.png'; this.onerror=null;". 4) For React/Vue components, implement an onError callback that swaps the src to a placeholder. 5) For external images, consider downloading and self-hosting or using a CDN with fallback. Always set this.onerror=null to prevent infinite error loops.
Show full SKILL.md (110 more words)Show less
Explain
Explain why broken images degrade user experience and how browsers handle them. A 404 response for an image shows the browser's broken-image icon, causes a console error, and—if the image is the LCP element—delays Core Web Vitals metrics. Search engines cannot index missing images, affecting image SEO. Monitoring image errors proactively prevents broken experiences from reaching users.
Code Review
Review image assets, markup, and delivery configuration related to Fix broken images. Flag exact files or components where format choice, sizing, or loading behavior violates the rule, and describe how to confirm the fix in DevTools.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/images/broken-images
© thedaviddias, 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 (references) in skills/broken-images of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Broken Images 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 |
|---|---|---|---|---|---|---|
| Broken Images this skillthedaviddias/Front-End-Checklist | 74k | — | ~728 | Automated safety check: Pass | MIT | |
| Web Artifacts Builderanthropics/skills | 180k | 40 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| React Doctormakeplane/plane | 61k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| Impeccablebestofjs/bestofjs | 3.1k | 26 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Figma Design System Builderwarpdotdev/warp | 65k | 2 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 | |
| Web Interface Guidelines Reviewervercel-labs/openreview | 1.7k | 97 repos | ~308 | Automated safety check: Pass | None |
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Related
Categories
Questions about Broken Images
What does Broken Images do?
A skill your agent uses when reviewing image assets, markup, and CDN or build transforms related to Fix broken images. Broken Images is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing image assets, markup, and CDN or build transforms related to Fix broken images.
When should I use Broken Images?
Broken Images fits situations like: reviewing image assets; build transforms related to Fix broken images.
How do I install Broken Images in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill broken-images -a claude-code`. Or copy the skill folder (skills/broken-images in thedaviddias/Front-End-Checklist) into .claude/skills/broken-images in your project. Claude Code loads it when a task matches its description.
How do I install Broken Images in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill broken-images -a codex`. Or copy the skill folder (skills/broken-images in thedaviddias/Front-End-Checklist) into .agents/skills/broken-images in your project. Codex loads it when a task matches its description.
Can I use Broken Images 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 thedaviddias/Front-End-Checklist --skill broken-images -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/broken-images, .gemini/skills/broken-images, .github/skills/broken-images and .opencode/skills/broken-images in your project.
What does Broken Images need to run?
SKILL.md names no scripts, command-line tools or credentials: Broken Images is instructions for the agent only.
Does Broken Images access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Broken Images 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 Broken Images use?
Broken Images 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 Broken Images use?
About 728 tokens (SKILL.md is roughly 2.9k 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 1.1k tokens, read only when the agent opens those files.
What are the alternatives to Broken Images?
Skills that share tags, products or a category with Broken Images: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), Impeccable (bestofjs/bestofjs, 3.1k stars) and Figma Design System Builder (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Broken Images?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.