Redirect Checker - HTTP Redirect Chain Analyzer

Analyze HTTP redirect chains, detect redirect loops, and measure performance. Free online tool for SEO professionals, DevOps engineers, and developers.

Try it now: redirect-checker.autocompany.workers.dev

Features

• Complete redirect chain tracing - Follow 301, 302, 307, 308 redirects
• Redirect loop detection - Automatically identify circular redirects
• Multiple User-Agent presets - Test as Googlebot, Bingbot, Mobile, curl
• Response time measurement - Track latency at each hop
• API-first design - RESTful JSON API for integration
• Edge computing - Fast responses from Cloudflare's global network

Quick Start

Web Interface

Visit redirect-checker.autocompany.workers.dev and enter any URL.

API

curl "https://redirect-checker.autocompany.workers.dev/api/check?url=https://bit.ly/example"

Response:

{
  "status": "success",
  "input_url": "https://bit.ly/example",
  "final_url": "https://example.com/page",
  "redirect_count": 2,
  "total_time_ms": 342,
  "chain": [
    {
      "url": "https://bit.ly/example",
      "status": 301,
      "location": "https://intermediate.com",
      "time_ms": 120
    },
    {
      "url": "https://intermediate.com",
      "status": 302,
      "location": "https://example.com/page",
      "time_ms": 98
    },
    {
      "url": "https://example.com/page",
      "status": 200,
      "time_ms": 124
    }
  ],
  "meta": {
    "checked_at": "2026-02-18T10:23:45.000Z",
    "user_agent": "RedirectChecker/1.0"
  }
}

Use Cases

For SEO Professionals

• Verify 301 redirects - Ensure permanent redirects are correctly configured
• Detect redirect chains - Find multi-hop redirects diluting link equity
• Check Googlebot experience - Test redirects as search engine crawlers
• Audit site migrations - Verify redirects after domain or URL changes

For Developers

• Debug URL routing - Understand where redirects are happening
• Detect redirect loops - Find infinite redirect cycles
• Measure performance - Track response times at each hop
• Test shortened URLs - Uncover final destinations

For DevOps

• Monitor redirect health - Integrate with monitoring systems
• Validate CDN configuration - Verify edge redirects
• Security auditing - Trace suspicious URL patterns

API Reference

GET /api/check

Check the redirect chain for a URL.

Parameters:

Parameter	Type	Required	Description
url	string	Yes	URL to check
user_agent	string	No	User-Agent preset
max_redirects	number	No	Max redirects (default: 20, max: 50)
timeout	number	No	Timeout in ms (default: 10000)

User-Agent Presets:

Preset	User-Agent
default	RedirectChecker/1.0
googlebot	Mozilla/5.0 (compatible; Googlebot/2.1)
bingbot	Mozilla/5.0 (compatible; bingbot/2.0)
mobile	Mozilla/5.0 (iPhone; CPU iPhone OS 14_0)
curl	curl/7.68.0
apiclient	API-Client/1.0

Example - Check as Googlebot:

curl "https://redirect-checker.autocompany.workers.dev/api/check?url=https://example.com&user_agent=googlebot"

GET /api/user-agents

List all available User-Agent presets.

GET /health

Health check endpoint.

HTTP Redirect Types

Status Code	Name	Description
301	Moved Permanently	Resource permanently moved
302	Found	Resource temporarily at different URL
307	Temporary Redirect	Temporary, preserve request method
308	Permanent Redirect	Permanent, preserve request method

Self-Hosting

Deploy your own instance on Cloudflare Workers:

# Clone the repository
git clone https://github.com/brancogao/redirect-checker.git
cd redirect-checker

# Install dependencies
npm install

# Run tests
npm test

# Deploy to Cloudflare Workers
npm run deploy

Local Development

# Run local development server
npm run dev

# Open http://localhost:8788

Tech Stack

• Runtime: Cloudflare Workers
• Language: TypeScript
• Test Framework: Vitest with Workers pool
• Deployment: Wrangler CLI

Related Projects

• Webhook Debugger - Inspect and debug webhooks with signature verification

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the MIT License - see the LICENSE file for details.

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Keywords: redirect checker, http redirect analyzer, url redirect checker, 301 redirect checker, redirect chain checker, redirect loop detector, seo redirect tool, check redirect chain

Links: Demo · GitHub · API