Deep single-page SEO analysis covering on-page elements, content quality, technical meta tags, schema, images, and performance.
SkillScore95Maintained
Automatic
◆Marketing & Content pack
Last verified 8/15/2026
What it changes
Passed 21 of 22 test cases with the skill, and 17 of 22 without it.
Without skill77%
With skill95%
Checks it passed that the model alone missed
does not recommend HowTo schema
classifies the 800KB image as a critical severity issue
requests the user provide rendered HTML or a public URL
and 1 more in the full report
4 fixed17 passed either way1 still failing0 broke
Pass-rate lift
+18 pp
Tokens
+23%
Agent turns
0%
Response time
-19%
Model gemini-3.6-flashMeasured 8/15/2026v221 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 4
Prompt
Our article meta description HTML is: <meta name="description" content="Learn fast cloud hosting setup tips."> (42 characters). What exact length range should we target when rewriting it?
What was checked, without and with the skill
Checked
Without skill
With skill
recommends expanding meta description length to 150-160 characters
Missed
Passed
case-10 · gemini-3.6-flash · 8/15/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md78 linessingle file
Single Page Analysis
What to Analyze
On-Page SEO
Title tag: 50-60 characters, includes primary keyword, unique
Meta description: 150-160 characters, compelling, includes keyword
H1: exactly one, matches page intent, includes keyword
H2-H6: logical hierarchy (no skipped levels), descriptive
URL: short, descriptive, hyphenated, no parameters
Internal links: sufficient, relevant anchor text, no orphan pages
External links: to authoritative sources, reasonable count
Content Quality
Word count vs page type minimums (see quality-gates.md)
Hreflang: if multi-language, correct implementation
Schema Markup
Detect all types (JSON-LD preferred)
Validate required properties
Identify missing opportunities
NEVER recommend HowTo (deprecated) or FAQ for rich results (retired May 2026); keep existing FAQPage as an AI-citation signal, use QAPage for genuine Q&A
Images
Alt text: present, descriptive, includes keywords where natural
File size: flag >200KB (warning), >500KB (critical)
Format: recommend WebP/AVIF over JPEG/PNG
Dimensions: width/height set for CLS prevention
Lazy loading: report lazy_method per image (native | perfmatters | ewww | js-generic | none). Do not flag "not lazy-loaded" when JS lazy-loaders (Perfmatters, EWWW, lazysizes) are detected — they intentionally strip the native loading="lazy" attribute and use data-src placeholders