Conciseness

The Quick Reference, Check, and Code Review sections largely restate the same checks, and 'Favicons appear next to your site's name in browser tabs, bookmarks, and Google Search mobile results' explains a concept Claude already knows; the opening paragraph also duplicates the Explain section. Mostly efficient overall but with clear tightening opportunities, fitting anchor 3; it is not a 2 because the body is short and most content is actionable rather than padded.

Actionability

The Fix section gives exact file specs ('favicon.ico (16×16 and 32×32, ICO format)', 'apple-touch-icon.png (180×180 PNG)') and a copy-paste `<head>` snippet. However, verification steps like 'Verify the favicon URL returns a 200 response' lack concrete commands (e.g. a curl invocation), leaving minor executable gaps — anchor 4 rather than 5.

Workflow Clarity

The Fix section is a clear six-step sequence with explicit validation checkpoints (verify the URL returns 200, check robots.txt, test via Search Console's URL Inspection tool), and Check provides a four-point verification checklist. This is a simple, non-destructive skill under 50 lines, so the simple-skill exception applies; not a 4 because no validation checkpoints are missing.

Progressive Disclosure

The body is a concise overview with well-organized sections and a clearly signaled one-level-deep reference — 'For full implementation details, code examples, and framework-specific guidance, see `references/rule.md`' — which exists in the bundle and itself references no further files. This matches anchor 5; not a 4 because the split and signaling leave no organization gaps.

Specificity

The description lists three concrete actions — 'checking whether a site has a correctly configured favicon', 'auditing the `<link rel="icon">` tags in the `<head>`', and 'setting up favicon infrastructure' — naming the exact HTML element involved. This matches the anchor for multiple specific concrete actions with comprehensive coverage; it is not a 4 because there are no meaningful gaps for a single-topic skill.

Completeness

'Use when checking... auditing... or setting up favicon infrastructure for a new project' explicitly answers both what the skill does and when to use it, with three concrete trigger phrases. Not a 4 because the 'when' clause is already fully explicit and specific.

Trigger Term Quality

'favicon' is the natural term users would say and appears across all three trigger scenarios, but common synonyms and extensions such as 'site icon', 'apple-touch-icon', or '.ico' are missing. Good keyword coverage with a few natural terms absent fits anchor 4; comprehensive synonym coverage (anchor 5) is not met.

Distinctiveness Conflict Risk

Favicon configuration is a clear niche with distinct triggers ('favicon', `<link rel='icon'>` auditing); virtually no other skill would compete for these triggers. This matches anchor 5 for minimal conflict risk, and is not a 4 because it is not merely 'mostly' distinct but unambiguously scoped.