SEO Analyzer

Overview

Perform comprehensive SEO audits on URLs or entire domains, identifying on-page deficiencies, technical issues, and content gaps with prioritized recommendations.

When to Use

• •Auditing a new website before launch
• •Diagnosing a traffic drop after a Google update
• •Benchmarking competitor pages
• •Preparing keyword optimization reports for content teams
• •Monthly SEO health monitoring

Instructions

1. •Accept input: target URL or domain, target keywords (optional), competitor URLs (optional).
2. •Crawl the page(s) and extract: title, meta description, H1-H6 hierarchy, image alt tags, canonical tags, robots directives.
3. •Check technical signals: page speed, mobile-friendliness, HTTPS, structured data, sitemap presence.
4. •Analyze keyword usage and density against target terms.
5. •Pull Core Web Vitals (LCP, FID, CLS) via PageSpeed Insights API.
6. •Identify issues: missing meta, duplicate titles, broken links, thin content, slow assets.
7. •Score the page from 0-100 across categories: Technical, On-Page, Content, UX.
8. •Return a ranked list of issues with severity (Critical/High/Medium/Low) and fix instructions.

Environment

PAGESPEED_API_KEY=your_google_pagespeed_api_key
SEMRUSH_API_KEY=your_semrush_api_key_optional
TARGET_URL=https://yourdomain.com
CRAWL_DEPTH=3

Examples

Input:

url: https://lithiumbuy.com
keywords: [lithium battery buyers, battery recycling marketplace]
competitors: [batterychain.com, recyclibat.com]

Output:

SEO Score: 74/100
Critical: Missing H1 on /about (1 issue)
High: Meta descriptions >160 chars on 5 pages
Medium: LCP 3.8s on homepage (target <2.5s)
Low: 12 images missing alt tags
Top keyword gap: 'lithium recycling B2B' - not ranking