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image-seo

Image SEO audit — make a site's images discoverable in Google Images and stop them from dragging down Core Web Vitals. Audits alt text quality and coverage, descriptive file names, modern formats (WebP/AVIF), dimensions and compression, responsive srcset, lazy-loading, explicit width/height (CLS), image sitemaps, and ImageObject structured data. Use this skill whenever the user asks about image SEO, alt text, Google Images ranking, image optimization for search, image file size hurting page speed, WebP/AVIF, or image structured data. Trigger on: "image SEO", "alt text", "rank in Google Images", "optimize my images for search", "image alt tags", "WebP", "image compression SEO", "image sitemap", "ImageObject schema", or any image-discoverability / image-performance question. For overall page speed use /seo-analysis; for generating new images use the brand image skills.

71

Quality

88%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

SKILL.md
Quality
Evals
Security

Quality

Content

76%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a concise, well-sequenced audit playbook with specific, actionable checks and clear phase boundaries. Its main gap is the absence of an explicit validation/verification checkpoint in a batch workflow, which limits workflow clarity.

Suggestions

Add an explicit verification step in Phase 1 or 2 (e.g. confirm the crawl covered all in-content images and re-fetch any that failed) to introduce a feedback loop and lift workflow_clarity above the batch-operation cap of 3.

Name a concrete tool or method for crawling and measuring image byte size/dimensions (e.g. a headless-browser fetch or a specific CLI) so the guidance is fully executable rather than implied.

Surface the Image SEO score methodology briefly in Phase 4 (how the score is computed) so the report step is reproducible rather than left to judgment.

DimensionReasoningScore

Conciseness

Lean and efficient throughout: assumes Claude knows what alt text, WebP, and CLS are, and uses tight bullet directives such as 'image issues are template-level' with no padding or concept re-explanation.

5 / 5

Actionability

Concrete directives with specific thresholds ('over ~150–200 KB', 'loading="lazy" for below-the-fold; the LCP/hero image must NOT be lazy-loaded') and exact fields to record, but lacks the specific crawl/measurement tooling or commands to make it fully copy-paste executable.

4 / 5

Workflow Clarity

A clear phased sequence (Step 0 → Phase 0–4) is present, but this is a batch operation across multiple pages and images with no explicit validation/verification checkpoint or feedback loop, which the rubric caps at 3.

3 / 5

Progressive Disclosure

Well-organized into clearly labeled phases with a single clearly-signaled one-level reference ('Read and follow ../shared/preamble.md'); no nested references and content appropriately scoped, though no dedicated bundle files exist to further split material.

4 / 5

Total

16

/

20

Passed

Description

100%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is exemplary: it enumerates concrete capabilities, provides comprehensive natural trigger terms, answers both what and when explicitly, and disambiguates from neighboring skills. No vague fluff or over-claims.

DimensionReasoningScore

Specificity

Lists multiple concrete audit actions — 'Audits alt text quality and coverage, descriptive file names, modern formats (WebP/AVIF), dimensions and compression, responsive srcset, lazy-loading, explicit width/height (CLS), image sitemaps, and ImageObject structured data' — giving comprehensive capability coverage.

5 / 5

Completeness

Explicitly answers both 'what' (the audit checklist of capabilities) and 'when' ('Use this skill whenever the user asks about... Trigger on:'), with concrete trigger phrases.

5 / 5

Trigger Term Quality

Comprehensive natural trigger terms including synonyms and variations users would actually say: 'image SEO', 'alt text', 'rank in Google Images', 'optimize my images for search', 'image alt tags', 'WebP', 'image sitemap', 'ImageObject schema'.

5 / 5

Distinctiveness Conflict Risk

Clear image-SEO niche with distinct triggers and explicit boundary guidance ('For overall page speed use /seo-analysis; for generating new images use the brand image skills'), minimizing conflict risk.

5 / 5

Total

20

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
nowork-studio/NotFair
Reviewed

Table of Contents

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