image-alt-textlisted

# Image Alt Text Accessibility Skill > **Canonical source**: `examples/IMAGE_ALT_TEXT_ACCESSIBILITY_BEST_PRACTICES.md` in `mgifford/ACCESSIBILITY.md` > This skill is derived from that file. When in doubt, the example is authoritative. Apply these rules when creating, reviewing, or auditing any page containing images. **Only load this skill if the project contains `<img>` elements, inline SVG images used as content, or CSS background images that may convey meaning.** --- ## Core Mandate WCAG 2.2 SC 1.1.1 Non-text Content (A): every non-text element must have a text alternative serving the equivalent purpose. There is no exception for decorative images — they require an explicit empty `alt=""`. Alternative text is determined by the image's purpose in its specific context, not by the file alone: the same asset may need different alt text, or none, in different uses. Never invent details — do not guess a person's identity, race, ethnicity, gender, disability, diagnosis, religion, age, or emotion from appearance. Automated tools detect structural problems (missing `alt`); only human judgment can determine whether alt text is meaningful, accurate, and appropriate for the context. --- ## Severity Scale (this skill) | Level | Meaning | | --- | --- | | **Critical** | Image conveying essential meaning has no `alt` attribute, or `alt` is entirely absent | | **Serious** | Functional image (button/link) has no text alternative, preventing keyboard/screen reader use | | **Moderate