30 checks in Multimodal Content & Media. Automated Its subsection has a live automated checker in the engine.
| ID | Check | Passes when |
|---|---|---|
| 8.1.01 | Validate every image has alt text | Present |
| 8.1.02 | Validate alt text accurately describes visible content | Accurate |
| 8.1.03 | Validate alt text includes essential contextual details | Contextual |
| 8.1.04 | Detect keyword stuffing in alt text | None |
| 8.1.05 | Validate alt text not overly long | Concise |
| 8.1.06 | Validate alt text avoids vague terms (“image of…”) | Avoided |
| 8.1.07 | Validate alt text describes function for functional images | Describes function |
| 8.1.08 | Detect outdated or mismatched alt descriptions | None |
| 8.1.09 | Validate icons/logos have accurate semantic alt tags | Accurate |
| 8.1.10 | Compute Alt-Text Quality Score | Finalized |
| ID | Check | Passes when |
|---|---|---|
| 8.1.11 | Validate alt text aligns with surrounding text | Aligned |
| 8.1.12 | Validate alt text reinforces page topic | Reinforcing |
| 8.1.13 | Validate alt text includes relevant entities | Included |
| 8.1.14 | Detect alt text that contradicts page context | None |
| 8.1.15 | Validate alt text uses industry vocabulary correctly | Correct |
| 8.1.16 | Validate alt text improves AI comprehension | Improved |
| 8.1.17 | Detect hallucination-risk phrases in alt text | None |
| 8.1.18 | Validate semantic clustering consistency | Consistent |
| 8.1.19 | Validate alt text aids entity extraction | Helpful |
| 8.1.20 | Compute Semantic Alignment Score | Finalized |
| ID | Check | Passes when |
|---|---|---|
| 8.1.21 | Validate captions present where needed | Present |
| 8.1.22 | Validate captions add narrative or explanatory value | Valuable |
| 8.1.23 | Validate captions support multimodal indexing | Supportive |
| 8.1.24 | Detect mismatched captions | None |
| 8.1.25 | Validate captions enhance topic clarity | Enhanced |
| 8.1.26 | Validate captions free of keyword stuffing | Clean |
| 8.1.27 | Validate captions structured for AI summarization | Structured |
| 8.1.28 | Validate captions improve UX comprehension | Improved |
| 8.1.29 | Detect caption duplication across images | None |
| 8.1.30 | Compute Image Caption Quality Score | Finalized |
8.2 Image Topic Alignment & AI Multimodal Relevance →
A Deep Audit scores every check here that applies to your page, then an AI pass of up to 150 checks. Included on Pro and Ultra, or $9 for one audit.
See plansMachine-readable: catalog totals and the full catalog as JSON (IDs, section, weight, status).