Redirect Checker - HTTP Redirect Chain Analyzer

February 17, 2026 · View on GitHub

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

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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.

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