SEO Analyzer

SEO Analyzer

Performs comprehensive on-page SEO audits — evaluating title tags, meta descriptions, heading hierarchy, content quality, keyword optimization, internal linking, structured data, Core Web Vitals signals, and technical SEO factors — and delivers a prioritized action plan to improve search visibility.

When to Use

• User asks to "audit SEO" or "check the SEO" on a page or website
• A page is ranking poorly and the cause needs to be identified
• New content needs to be optimized before publishing
• User wants to improve Core Web Vitals scores
• Technical SEO issues (crawlability, canonicalization, structured data errors) need diagnosis
• A competitor's page needs to be analyzed to understand why it ranks better
• User asks to add or validate schema.org structured data markup

Process

1. Define the audit scope:

   • Single page: full deep audit
   • Site-wide: crawl all pages, surface issues by type and severity
   • Keyword-focused: evaluate a specific page against a target keyword
   • Technical only: crawlability, indexability, structured data, sitemaps
   • Content quality: evaluate topic depth, readability, and E-E-A-T signals

2. On-page element analysis:

   Title tag:

   • Length: 50–60 characters ideal (flag if <30 or >70)
   • Contains target keyword (ideally near the start)
   • Unique across the site (flag duplicates)
   • Compelling for click-through (value proposition or question hook)

   Meta description:

   • Length: 140–160 characters (flag if truncated in SERPs)
   • Contains target keyword naturally
   • Includes a clear call to action
   • Unique and not auto-generated

   Heading hierarchy (H1–H6):

   • One H1 per page, containing the primary keyword
   • Logical hierarchy: H1 → H2 → H3 (no skipped levels)
   • H2s cover main topics the page targets
   • Headings are descriptive, not generic ("Overview" → "How X Works in 2025")

   URL structure:

   • Short, readable, hyphen-separated
   • Contains the primary keyword
   • No unnecessary parameters, session IDs, or uppercase letters
   • HTTPS enforced

3. Content quality analysis:

   • Word count: appropriate for content type (informational pages: 1,200–2,500 words typical)
   • Keyword usage: target keyword in first 100 words, natural density (0.5–2%), not stuffed
   • LSI/semantic terms: related terms that demonstrate topical depth
   • Readability: Flesch-Kincaid score — flag if below 50 (too complex for general audience)
   • E-E-A-T signals: author bio, publication date, citations, expertise indicators
   • Content freshness: publication/update date visible; stale content (>2 years on fast-moving topics) flagged

4. Technical SEO checks:

   • Canonical tag: present, self-referencing (unless paginated), no conflicting canonicals
   • Robots meta tag: check for accidental noindex or nofollow on important pages
   • Structured data: detect existing schema.org markup; validate against Google's guidelines; check for errors
   • Image optimization: alt text present and descriptive, images compressed (flag files >200 KB), WebP format preferred
   • Internal links: minimum 2–3 relevant internal links per page; check for broken internal links
   • Page speed signals: detect render-blocking resources, large JavaScript bundles, missing lazy loading

5. Core Web Vitals assessment:

   • LCP (Largest Contentful Paint): flag if >2.5s (identify the LCP element)
   • INP (Interaction to Next Paint): flag if >200ms
   • CLS (Cumulative Layout Shift): flag if >0.1 (identify shifting elements)
   • Source: use PageSpeed Insights API or Lighthouse data if available; otherwise note that real-user data is needed

6. SERP feature opportunities:

   • Identify if the page could earn: featured snippet, FAQ, How-To, review stars, sitelinks, video carousel
   • Note schema types needed to qualify for each opportunity

7. Prioritized recommendations:

   • Classify each finding: 🔴 Critical (indexing/crawl issues, missing H1) → 🟡 High impact (title, meta, Core Web Vitals) → 🟢 Medium (content depth, internal links) → 💬 Minor (formatting, minor copy tweaks)
   • Order by estimated effort vs. impact
   • Provide concrete fix instructions for each finding

Output Format

## SEO Audit Report
**URL:** https://example.com/product/widget-pro
**Target Keyword:** "best project management software for small teams"
**Audit Date:** June 1, 2025

### Overall Score: 62/100

---

### 🔴 Critical Issues (fix immediately)

**1. Missing H1 Tag**
The page has no H1 element. H1 is the primary on-page signal for search engines to understand the page topic.
✅ Fix: Add `<h1>Best Project Management Software for Small Teams in 2025</h1>` at the top of the content.

**2. Page Not Indexable — robots meta tag**
`<meta name="robots" content="noindex">` found. This page is excluded from search indexing.
✅ Fix: Remove the noindex directive or change to `<meta name="robots" content="index, follow">`.

---

### 🟡 High Impact Issues

**3. Title Tag Too Short (28 characters)**
Current: "Widget Pro | Product"
Ideal length: 50–60 characters. Missing target keyword.
✅ Fix: "Widget Pro: Best Project Management for Small Teams"

**4. LCP: 4.2 seconds (Poor)**
LCP element: Hero image (1.8 MB PNG). Target: ≤ 2.5s.
✅ Fix: Convert to WebP format, serve via CDN, add `loading="eager"` and explicit dimensions.

---

### 🟢 Medium Issues

**5. No Internal Links to Key Service Pages**
0 internal links from this page to other pages. Minimum recommended: 3–5.
✅ Fix: Add contextual links to pricing page, features comparison, and customer case studies.

**6. Missing FAQ Schema**
Page contains FAQ-style content but no FAQ schema markup. Adding it could earn a featured snippet.
✅ Fix: Add FAQ schema using JSON-LD for the Q&A section.

---

### Summary
| Priority | Issues | Estimated Impact |
|----------|--------|-----------------|
| 🔴 Critical | 2 | Immediate ranking recovery |
| 🟡 High | 3 | +15–30% click-through improvement |
| 🟢 Medium | 4 | Incremental gains over 60–90 days |

Examples

Example Input

Audit the SEO for this blog post. Target keyword: "how to write a business plan". Here's the HTML: [...]

Example Output

SEO Audit — "How to Write a Business Plan"
Target keyword: "how to write a business plan"

Title: "Writing Business Plans — A Complete Guide" (46 chars) ✅ length OK ⚠️ keyword not exact-match
H1: "A Complete Guide to Writing Business Plans" ✅ (present, contains keyword)
Meta description: Missing ❌ — add 140–160 char description with keyword + CTA
Content: 1,840 words ✅ | Keyword in first 100 words ✅ | Keyword density: 1.2% ✅
Images: 3 images — 2 missing alt text ⚠️
Internal links: 1 (low) ⚠️ — add 2–3 more

Top Recommendation: Add meta description. It is the single highest-impact fix with the least effort.

Boundaries

• SEO audits are based on current best practices and public guidelines (Google Search Central, Core Web Vitals docs) — search algorithm specifics are not publicly documented and recommendations are evidence-based, not guaranteed.
• Do NOT make promises about specific ranking positions or timelines — SEO results depend on many factors outside this audit's scope.
• For Core Web Vitals, distinguish between lab data (Lighthouse, simulated) and field data (CrUX, real users) — they can differ significantly.
• Do NOT recommend black-hat tactics: keyword stuffing, hidden text, link schemes, or cloaking.
• Structured data recommendations must comply with Google's schema.org guidelines; invalid or misleading schema can result in manual actions.
• When auditing competitor pages, only analyze publicly accessible content — do not attempt to access login-gated analytics or internal tools.