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broken-images

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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.

skills/broken-images/SKILL.md

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Oct 31, 2026
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# 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 `onerror` handlers to swap broken `<img>` elements to fallback images
- Set `this.onerror=null` inside 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.
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