🚀 SEO Optimization

SEO Analyzer API
Free Developer API

Comprehensive SEO analysis for websites including technical issues, performance problems, and optimization opportunities. Perfect for SEO tools, agencies, and automated audits.

Get Started Free View Documentation

100 requests/month free • No credit card required

How It Works

Submit Website URL

POST the website URL you want to analyze for SEO issues

AI Analyzes Page

Our engine checks 50+ SEO factors including performance, structure, and content

Get SEO Report

Receive detailed JSON report with scores, issues, and recommendations

Key Features

📊

On-Page SEO Score

Comprehensive scoring based on title tags, meta descriptions, headings, and content structure.

🔍

Keyword Analysis

Analyze keyword density, prominence, and placement across headings, title, and body content.

📱

Mobile Friendliness

Check viewport configuration, responsive design, and mobile usability indicators.

⚡

Performance Metrics

Measure page load time, resource count, and Core Web Vitals indicators.

🔗

Link Analysis

Count and categorize internal links, external links, and detect broken or nofollow links.

📝

Content Quality

Evaluate word count, readability, image alt tags, and structured data presence.

Use Cases

📈

Rank Tracking

Monitor on-page SEO scores over time and correlate changes with search ranking improvements.

🏆

Competitor Analysis

Compare your pages against competitors to identify SEO gaps and optimization opportunities.

🔄

Automated Audits

Schedule regular SEO audits across your entire site and get alerts when scores drop below thresholds.

📋

Client Reports

Generate professional SEO analysis reports for clients with actionable improvement recommendations.

Pricing

Free

€0/month

✓ 100 requests/month
✓ All features
✓ API documentation
✓ Email support

Get Started

Pro

€9/month

✓ 10,000 API calls/month
✓ All 5 APIs included
✓ Priority support
✓ 99.9% SLA

Choose Pro

Business

€29/month

✓ 50,000 API calls/month
✓ Dedicated support
✓ Custom rate limits
✓ SLA guarantee

Choose Business

Quick Start

curl -s "{https://api.toolcenter.dev/v1/seo?url=https://example.com}" \
  -H "Authorization: Bearer YOUR_API_KEY"

const response = await fetch(
  'https://api.toolcenter.dev/v1/seo?url=https://example.com',
  {headers: {'Authorization': 'Bearer YOUR_API_KEY'}}
);
const data = await response.json();
console.log(data);

import requests

response = requests.get(
    'https://api.toolcenter.dev/v1/seo?url=https://example.com',
    headers={"Authorization": "Bearer YOUR_API_KEY"}
)
print(response.json())

Frequently Asked Questions

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SEO Analyzer API Free Developer API